Bug#54916 GROUP_CONCAT + IFNULL truncates output

Problem: a few functions did not calculate their max_length correctly.
This is an after-fix for WL#2649 Number-to-string conversions".

Fix: changing the buggy functions to calculate max_length
using fix_char_length() introduced in WL#2649,
instead of setting max_length directly

  mysql-test/include/ctype_numconv.inc
     Adding new tests

  mysql-test/r/ctype_binary.result
     Adding new tests

  mysql-test/r/ctype_cp1251.result
     Adding new tests

  mysql-test/r/ctype_latin1.result
     Adding new tests

  mysql-test/r/ctype_ucs.result
     Adding new tests

  mysql-test/r/ctype_utf8.result
     Adding new tests

  mysql-test/t/ctype_utf8.test
    Including ctype_numconv

  sql/item.h
    - Introducing new method fix_char_length_ulonglong(),
    for the cases when length is potentially greater
    than UINT_MAX32. This method removes a few
    instances of duplicate code, e.g. in item_strfunc.cc.
    - Setting collation in Item_copy properly. This change
    fixes wrong metadata on client side in some cases, when
    "binary" instead of the real character set was reported.

  sql/item_cmpfunc.cc
    - Using fix_char_length() and max_char_length() methods,
    instead of direct access to max_length, to calculate
    item length properly.
    - Moving count_only_length() in COALESCE after
    agg_arg_charsets_for_string_result(). The old
    order was incorrect and led to wrong length
    calucation in case of multi-byte character sets.
    
  sql/item_func.cc
    Fixing that count_only_length() didn't work
    properly for multi-byte character sets.
    Using fix_char_length() and max_char_length()
    instead of direct access to max_length.

  sql/item_strfunc.cc
    - Using fix_char_length(), fix_char_length_ulonglong(),
    max_char_length() instead of direct access to max_length.
    - Removing wierd condition: "if (collation.collation->mbmaxlen > 0)",
    which is never FALSE.

13 files changed, 3577 insertions, 129 deletions

diff --git a/mysql-test/include/ctype_numconv.inc b/mysql-test/include/ctype_numconv.inc
index 77913fc8c18..06a9107e963 100644
--- a/mysql-test/include/ctype_numconv.inc
+++ b/mysql-test/include/ctype_numconv.inc
@@ -1626,6 +1626,108 @@ SELECT charset(@x), collation(@x);
 
 
 --echo #
+--echo # Bug#54916 GROUP_CONCAT + IFNULL truncates output
+--echo #
+SELECT @@collation_connection;
+# ENGINE=MYISAM is very important to make sure "SYSTEM" join type
+# is in use, which will create instances of Item_copy.
+CREATE TABLE t1 (a MEDIUMINT NULL) ENGINE=MYISAM;
+INSERT INTO t1 VALUES (1234567);
+SELECT GROUP_CONCAT(IFNULL(a,'')) FROM t1;
+SELECT GROUP_CONCAT(IF(a,a,'')) FROM t1;
+if (`SELECT @@character_set_connection != 'ucs2'`)
+{
+  # Temporarily disable for ucs2
+  # For details, see Bug#55744 GROUP_CONCAT + CASE + ucs return garbage
+  SELECT GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END) FROM t1;
+}
+--enable_metadata
+SELECT COALESCE(a,'') FROM t1 GROUP BY 1;
+--disable_metadata
+--echo # All columns must be VARCHAR(9) with the same length:
+--disable_warnings
+CREATE TABLE t2 AS
+SELECT
+  CONCAT(a),
+  IFNULL(a,''),
+  IF(a,a,''),
+  CASE WHEN a THEN a ELSE '' END,
+  COALESCE(a,'')
+FROM t1;
+--enable_warnings
+# The above query is expected to send a warning
+# in case of ucs2 character set, until Bug#55744 is fixed.
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT CONCAT_WS(1,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT INSERT(1133,3,0,22) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT LCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT UCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT REPEAT(1,2) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT LEFT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT RIGHT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT LTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT RTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT ELT(1,111,222,333) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT REPLACE(111,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT SUBSTRING_INDEX(111,111,1) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT MAKE_SET(111,222,3) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT SOUNDEX(1) FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+CREATE TABLE t2 AS SELECT EXPORT_SET(1,'Y','N','',8);
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+
+DROP TABLE t1;
+
+--echo #
+--echo # End of Bug#54916
+--echo #
+
+
+--echo #
 --echo # Bug#52159 returning time type from function and empty left join causes debug assertion
 --echo #
 CREATE FUNCTION f1() RETURNS TIME RETURN 1;
diff --git a/mysql-test/r/case.result b/mysql-test/r/case.result
index fcbf5812312..40d900a0389 100644
--- a/mysql-test/r/case.result
+++ b/mysql-test/r/case.result
@@ -160,6 +160,8 @@ t1	CREATE TABLE `t1` (
   `COALESCE('a' COLLATE latin1_bin,'b')` varchar(1) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL DEFAULT ''
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t1;
+CREATE TABLE t1 SELECT IFNULL('a' COLLATE latin1_swedish_ci, 'b' COLLATE latin1_bin);
+ERROR HY000: Illegal mix of collations (latin1_swedish_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'ifnull'
 SELECT 'case+union+test'
 UNION 
 SELECT CASE LOWER('1') WHEN LOWER('2') THEN 'BUG' ELSE 'nobug' END;
diff --git a/mysql-test/r/ctype_binary.result b/mysql-test/r/ctype_binary.result
index 76a4d0f3cf3..0e8fe328589 100644
--- a/mysql-test/r/ctype_binary.result
+++ b/mysql-test/r/ctype_binary.result
@@ -2598,6 +2598,156 @@ SELECT charset(@x), collation(@x);
 charset(@x)	collation(@x)
 binary	binary
 #
+# Bug#54916 GROUP_CONCAT + IFNULL truncates output
+#
+SELECT @@collation_connection;
+@@collation_connection
+binary
+CREATE TABLE t1 (a MEDIUMINT NULL) ENGINE=MYISAM;
+INSERT INTO t1 VALUES (1234567);
+SELECT GROUP_CONCAT(IFNULL(a,'')) FROM t1;
+GROUP_CONCAT(IFNULL(a,''))
+1234567
+SELECT GROUP_CONCAT(IF(a,a,'')) FROM t1;
+GROUP_CONCAT(IF(a,a,''))
+1234567
+SELECT GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END) FROM t1;
+GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END)
+1234567
+SELECT COALESCE(a,'') FROM t1 GROUP BY 1;
+Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
+def					COALESCE(a,'')	253	9	7	Y	128	31	63
+COALESCE(a,'')
+1234567
+# All columns must be VARCHAR(9) with the same length:
+CREATE TABLE t2 AS
+SELECT
+CONCAT(a),
+IFNULL(a,''),
+IF(a,a,''),
+CASE WHEN a THEN a ELSE '' END,
+COALESCE(a,'')
+FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT(a)` varbinary(9) DEFAULT NULL,
+  `IFNULL(a,'')` varbinary(9) NOT NULL DEFAULT '',
+  `IF(a,a,'')` varbinary(9) DEFAULT NULL,
+  `CASE WHEN a THEN a ELSE '' END` varbinary(9) DEFAULT NULL,
+  `COALESCE(a,'')` varbinary(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT CONCAT_WS(1,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT_WS(1,2,3)` varbinary(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT INSERT(1133,3,0,22) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `INSERT(1133,3,0,22)` varbinary(6) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LCASE(a)` varbinary(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT UCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `UCASE(a)` varbinary(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPEAT(1,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPEAT(1,2)` varbinary(2) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LEFT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LEFT(123,2)` varbinary(2) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RIGHT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RIGHT(123,2)` varbinary(2) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LTRIM(123)` varbinary(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RTRIM(123)` varbinary(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT ELT(1,111,222,333) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `ELT(1,111,222,333)` varbinary(3) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPLACE(111,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPLACE(111,2,3)` varbinary(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SUBSTRING_INDEX(111,111,1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SUBSTRING_INDEX(111,111,1)` varbinary(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT MAKE_SET(111,222,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `MAKE_SET(111,222,3)` varbinary(5) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SOUNDEX(1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SOUNDEX(1)` varbinary(4) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT EXPORT_SET(1,'Y','N','',8);
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `EXPORT_SET(1,'Y','N','',8)` varbinary(64) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+DROP TABLE t1;
+#
+# End of Bug#54916
+#
+#
 # Bug#52159 returning time type from function and empty left join causes debug assertion
 #
 CREATE FUNCTION f1() RETURNS TIME RETURN 1;
diff --git a/mysql-test/r/ctype_cp1251.result b/mysql-test/r/ctype_cp1251.result
index f93cb5f9a12..b1e9ff38d26 100644
--- a/mysql-test/r/ctype_cp1251.result
+++ b/mysql-test/r/ctype_cp1251.result
@@ -2680,6 +2680,156 @@ SELECT charset(@x), collation(@x);
 charset(@x)	collation(@x)
 cp1251	cp1251_general_ci
 #
+# Bug#54916 GROUP_CONCAT + IFNULL truncates output
+#
+SELECT @@collation_connection;
+@@collation_connection
+cp1251_general_ci
+CREATE TABLE t1 (a MEDIUMINT NULL) ENGINE=MYISAM;
+INSERT INTO t1 VALUES (1234567);
+SELECT GROUP_CONCAT(IFNULL(a,'')) FROM t1;
+GROUP_CONCAT(IFNULL(a,''))
+1234567
+SELECT GROUP_CONCAT(IF(a,a,'')) FROM t1;
+GROUP_CONCAT(IF(a,a,''))
+1234567
+SELECT GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END) FROM t1;
+GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END)
+1234567
+SELECT COALESCE(a,'') FROM t1 GROUP BY 1;
+Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
+def					COALESCE(a,'')	253	9	7	Y	0	31	51
+COALESCE(a,'')
+1234567
+# All columns must be VARCHAR(9) with the same length:
+CREATE TABLE t2 AS
+SELECT
+CONCAT(a),
+IFNULL(a,''),
+IF(a,a,''),
+CASE WHEN a THEN a ELSE '' END,
+COALESCE(a,'')
+FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT(a)` varchar(9) CHARACTER SET cp1251 DEFAULT NULL,
+  `IFNULL(a,'')` varchar(9) CHARACTER SET cp1251 NOT NULL DEFAULT '',
+  `IF(a,a,'')` varchar(9) CHARACTER SET cp1251 DEFAULT NULL,
+  `CASE WHEN a THEN a ELSE '' END` varchar(9) CHARACTER SET cp1251 DEFAULT NULL,
+  `COALESCE(a,'')` varchar(9) CHARACTER SET cp1251 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT CONCAT_WS(1,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT_WS(1,2,3)` varchar(3) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT INSERT(1133,3,0,22) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `INSERT(1133,3,0,22)` varchar(6) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LCASE(a)` varchar(9) CHARACTER SET cp1251 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT UCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `UCASE(a)` varchar(9) CHARACTER SET cp1251 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPEAT(1,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPEAT(1,2)` varchar(2) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LEFT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LEFT(123,2)` varchar(2) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RIGHT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RIGHT(123,2)` varchar(2) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LTRIM(123)` varchar(3) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RTRIM(123)` varchar(3) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT ELT(1,111,222,333) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `ELT(1,111,222,333)` varchar(3) CHARACTER SET cp1251 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPLACE(111,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPLACE(111,2,3)` varchar(3) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SUBSTRING_INDEX(111,111,1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SUBSTRING_INDEX(111,111,1)` varchar(3) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT MAKE_SET(111,222,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `MAKE_SET(111,222,3)` varchar(5) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SOUNDEX(1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SOUNDEX(1)` varchar(4) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT EXPORT_SET(1,'Y','N','',8);
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `EXPORT_SET(1,'Y','N','',8)` varchar(64) CHARACTER SET cp1251 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+DROP TABLE t1;
+#
+# End of Bug#54916
+#
+#
 # Bug#52159 returning time type from function and empty left join causes debug assertion
 #
 CREATE FUNCTION f1() RETURNS TIME RETURN 1;
diff --git a/mysql-test/r/ctype_latin1.result b/mysql-test/r/ctype_latin1.result
index 43ee365cd53..6216819d172 100644
--- a/mysql-test/r/ctype_latin1.result
+++ b/mysql-test/r/ctype_latin1.result
@@ -3008,6 +3008,156 @@ SELECT charset(@x), collation(@x);
 charset(@x)	collation(@x)
 latin1	latin1_swedish_ci
 #
+# Bug#54916 GROUP_CONCAT + IFNULL truncates output
+#
+SELECT @@collation_connection;
+@@collation_connection
+latin1_swedish_ci
+CREATE TABLE t1 (a MEDIUMINT NULL) ENGINE=MYISAM;
+INSERT INTO t1 VALUES (1234567);
+SELECT GROUP_CONCAT(IFNULL(a,'')) FROM t1;
+GROUP_CONCAT(IFNULL(a,''))
+1234567
+SELECT GROUP_CONCAT(IF(a,a,'')) FROM t1;
+GROUP_CONCAT(IF(a,a,''))
+1234567
+SELECT GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END) FROM t1;
+GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END)
+1234567
+SELECT COALESCE(a,'') FROM t1 GROUP BY 1;
+Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
+def					COALESCE(a,'')	253	9	7	Y	0	31	8
+COALESCE(a,'')
+1234567
+# All columns must be VARCHAR(9) with the same length:
+CREATE TABLE t2 AS
+SELECT
+CONCAT(a),
+IFNULL(a,''),
+IF(a,a,''),
+CASE WHEN a THEN a ELSE '' END,
+COALESCE(a,'')
+FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT(a)` varchar(9) DEFAULT NULL,
+  `IFNULL(a,'')` varchar(9) NOT NULL DEFAULT '',
+  `IF(a,a,'')` varchar(9) DEFAULT NULL,
+  `CASE WHEN a THEN a ELSE '' END` varchar(9) DEFAULT NULL,
+  `COALESCE(a,'')` varchar(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT CONCAT_WS(1,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT_WS(1,2,3)` varchar(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT INSERT(1133,3,0,22) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `INSERT(1133,3,0,22)` varchar(6) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LCASE(a)` varchar(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT UCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `UCASE(a)` varchar(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPEAT(1,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPEAT(1,2)` varchar(2) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LEFT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LEFT(123,2)` varchar(2) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RIGHT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RIGHT(123,2)` varchar(2) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LTRIM(123)` varchar(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RTRIM(123)` varchar(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT ELT(1,111,222,333) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `ELT(1,111,222,333)` varchar(3) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPLACE(111,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPLACE(111,2,3)` varchar(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SUBSTRING_INDEX(111,111,1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SUBSTRING_INDEX(111,111,1)` varchar(3) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT MAKE_SET(111,222,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `MAKE_SET(111,222,3)` varchar(5) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SOUNDEX(1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SOUNDEX(1)` varchar(4) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT EXPORT_SET(1,'Y','N','',8);
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `EXPORT_SET(1,'Y','N','',8)` varchar(64) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+DROP TABLE t1;
+#
+# End of Bug#54916
+#
+#
 # Bug#52159 returning time type from function and empty left join causes debug assertion
 #
 CREATE FUNCTION f1() RETURNS TIME RETURN 1;
diff --git a/mysql-test/r/ctype_ucs.result b/mysql-test/r/ctype_ucs.result
index 7bb27e03acc..1215eb1db02 100644
--- a/mysql-test/r/ctype_ucs.result
+++ b/mysql-test/r/ctype_ucs.result
@@ -3840,6 +3840,153 @@ SELECT charset(@x), collation(@x);
 charset(@x)	collation(@x)
 ucs2	ucs2_general_ci
 #
+# Bug#54916 GROUP_CONCAT + IFNULL truncates output
+#
+SELECT @@collation_connection;
+@@collation_connection
+ucs2_general_ci
+CREATE TABLE t1 (a MEDIUMINT NULL) ENGINE=MYISAM;
+INSERT INTO t1 VALUES (1234567);
+SELECT GROUP_CONCAT(IFNULL(a,'')) FROM t1;
+GROUP_CONCAT(IFNULL(a,''))
+1234567
+SELECT GROUP_CONCAT(IF(a,a,'')) FROM t1;
+GROUP_CONCAT(IF(a,a,''))
+1234567
+SELECT COALESCE(a,'') FROM t1 GROUP BY 1;
+Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
+def					COALESCE(a,'')	253	9	7	Y	0	31	8
+COALESCE(a,'')
+1234567
+# All columns must be VARCHAR(9) with the same length:
+CREATE TABLE t2 AS
+SELECT
+CONCAT(a),
+IFNULL(a,''),
+IF(a,a,''),
+CASE WHEN a THEN a ELSE '' END,
+COALESCE(a,'')
+FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT(a)` varchar(9) CHARACTER SET ucs2 DEFAULT NULL,
+  `IFNULL(a,'')` varchar(9) CHARACTER SET ucs2 NOT NULL DEFAULT '',
+  `IF(a,a,'')` varchar(9) CHARACTER SET ucs2 DEFAULT NULL,
+  `CASE WHEN a THEN a ELSE '' END` varchar(9) CHARACTER SET ucs2 DEFAULT NULL,
+  `COALESCE(a,'')` varchar(9) CHARACTER SET ucs2 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT CONCAT_WS(1,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT_WS(1,2,3)` varchar(3) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT INSERT(1133,3,0,22) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `INSERT(1133,3,0,22)` varchar(6) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LCASE(a)` varchar(9) CHARACTER SET ucs2 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT UCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `UCASE(a)` varchar(9) CHARACTER SET ucs2 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPEAT(1,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPEAT(1,2)` varchar(2) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LEFT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LEFT(123,2)` varchar(2) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RIGHT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RIGHT(123,2)` varchar(2) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LTRIM(123)` varchar(3) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RTRIM(123)` varchar(3) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT ELT(1,111,222,333) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `ELT(1,111,222,333)` varchar(3) CHARACTER SET ucs2 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPLACE(111,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPLACE(111,2,3)` varchar(3) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SUBSTRING_INDEX(111,111,1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SUBSTRING_INDEX(111,111,1)` varchar(3) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT MAKE_SET(111,222,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `MAKE_SET(111,222,3)` varchar(5) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SOUNDEX(1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SOUNDEX(1)` varchar(4) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT EXPORT_SET(1,'Y','N','',8);
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `EXPORT_SET(1,'Y','N','',8)` varchar(64) CHARACTER SET ucs2 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+DROP TABLE t1;
+#
+# End of Bug#54916
+#
+#
 # Bug#52159 returning time type from function and empty left join causes debug assertion
 #
 CREATE FUNCTION f1() RETURNS TIME RETURN 1;
diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result
index a4e7c4ef53a..e14b54b59a3 100644
--- a/mysql-test/r/ctype_utf8.result
+++ b/mysql-test/r/ctype_utf8.result
@@ -2087,6 +2087,2772 @@ t2	CREATE TABLE `t2` (
   `CONCAT(s1)` varchar(255) CHARACTER SET utf8 DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t1, t2;
+SET NAMES utf8;
+#
+# Start of WL#2649 Number-to-string conversions
+#
+select hex(concat(1));
+hex(concat(1))
+31
+create table t1 as select concat(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select hex(c1) from t1;
+hex(c1)
+31
+drop table t1;
+select hex(concat(18446744073709551615));
+hex(concat(18446744073709551615))
+3138343436373434303733373039353531363135
+create table t1 as select concat(18446744073709551615) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(20) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select hex(c1) from t1;
+hex(c1)
+3138343436373434303733373039353531363135
+drop table t1;
+select hex(concat(1.1));
+hex(concat(1.1))
+312E31
+create table t1 as select concat(1.1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select hex(c1) from t1;
+hex(c1)
+312E31
+drop table t1;
+select hex(concat('a', 1+2)), charset(concat(1+2));
+hex(concat('a', 1+2))	charset(concat(1+2))
+6133	utf8
+create table t1 as select concat(1+2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1-2));
+hex(concat(1-2))
+2D31
+create table t1 as select concat(1-2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1*2));
+hex(concat(1*2))
+32
+create table t1 as select concat(1*2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1/2));
+hex(concat(1/2))
+302E35303030
+create table t1 as select concat(1/2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(7) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1 div 2));
+hex(concat(1 div 2))
+30
+create table t1 as select concat(1 div 2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1 % 2));
+hex(concat(1 % 2))
+31
+create table t1 as select concat(1 % 2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(-1));
+hex(concat(-1))
+2D31
+create table t1 as select concat(-1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(-(1+2)));
+hex(concat(-(1+2)))
+2D33
+create table t1 as select concat(-(1+2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1|2));
+hex(concat(1|2))
+33
+create table t1 as select concat(1|2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(1&2));
+hex(concat(1&2))
+30
+create table t1 as select concat(1&2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(bit_count(12)));
+hex(concat(bit_count(12)))
+32
+create table t1 as select concat(bit_count(12)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(2<<1));
+hex(concat(2<<1))
+34
+create table t1 as select concat(2<<1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(2>>1));
+hex(concat(2>>1))
+31
+create table t1 as select concat(2>>1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(~0));
+hex(concat(~0))
+3138343436373434303733373039353531363135
+create table t1 as select concat(~0) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(3^2));
+hex(concat(3^2))
+31
+create table t1 as select concat(3^2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(abs(-2)));
+hex(concat(abs(-2)))
+32
+create table t1 as select concat(abs(-2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(exp(2)),1));
+hex(left(concat(exp(2)),1))
+37
+create table t1 as select concat(exp(2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(log(2)),1));
+hex(left(concat(log(2)),1))
+30
+create table t1 as select concat(log(2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(log2(2)),1));
+hex(left(concat(log2(2)),1))
+31
+create table t1 as select concat(log2(2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(log10(2)),1));
+hex(left(concat(log10(2)),1))
+30
+create table t1 as select concat(log10(2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(sqrt(2)),1));
+hex(left(concat(sqrt(2)),1))
+31
+create table t1 as select concat(sqrt(2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(pow(2,2)),1));
+hex(left(concat(pow(2,2)),1))
+34
+create table t1 as select concat(pow(2,2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(acos(0.5)),1));
+hex(left(concat(acos(0.5)),1))
+31
+create table t1 as select concat(acos(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(asin(0.5)),1));
+hex(left(concat(asin(0.5)),1))
+30
+create table t1 as select concat(asin(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(atan(0.5)),1));
+hex(left(concat(atan(0.5)),1))
+30
+create table t1 as select concat(atan(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(cos(0.5)),1));
+hex(left(concat(cos(0.5)),1))
+30
+create table t1 as select concat(cos(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(sin(0.5)),1));
+hex(left(concat(sin(0.5)),1))
+30
+create table t1 as select concat(sin(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(tan(0.5)),1));
+hex(left(concat(tan(0.5)),1))
+30
+create table t1 as select concat(tan(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(degrees(0)));
+hex(concat(degrees(0)))
+30
+create table t1 as select concat(degrees(0)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(radians(0)));
+hex(concat(radians(0)))
+30
+create table t1 as select concat(radians(0)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(ceiling(0.5)));
+hex(concat(ceiling(0.5)))
+31
+create table t1 as select concat(ceiling(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(floor(0.5)));
+hex(concat(floor(0.5)))
+30
+create table t1 as select concat(floor(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(round(0.5)));
+hex(concat(round(0.5)))
+31
+create table t1 as select concat(round(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(sign(0.5)));
+hex(concat(sign(0.5)))
+31
+create table t1 as select concat(sign(0.5)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(rand()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(length('a')));
+hex(concat(length('a')))
+31
+create table t1 as select concat(length('a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(char_length('a')));
+hex(concat(char_length('a')))
+31
+create table t1 as select concat(char_length('a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(bit_length('a')));
+hex(concat(bit_length('a')))
+38
+create table t1 as select concat(bit_length('a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(coercibility('a')));
+hex(concat(coercibility('a')))
+34
+create table t1 as select concat(coercibility('a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(locate('a','a')));
+hex(concat(locate('a','a')))
+31
+create table t1 as select concat(locate('a','a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(11) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(field('c','a','b','c')));
+hex(concat(field('c','a','b','c')))
+33
+create table t1 as select concat(field('c','a','b','c')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(ascii(61)));
+hex(concat(ascii(61)))
+3534
+create table t1 as select concat(ascii(61)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(ord(61)));
+hex(concat(ord(61)))
+3534
+create table t1 as select concat(ord(61)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(find_in_set('b','a,b,c,d')));
+hex(concat(find_in_set('b','a,b,c,d')))
+32
+create table t1 as select concat(find_in_set('b','a,b,c,d')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select md5('a'), hex(md5('a'));
+md5('a')	hex(md5('a'))
+0cc175b9c0f1b6a831c399e269772661	3063633137356239633066316236613833316333393965323639373732363631
+create table t1 as select md5('a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(32) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select old_password('a'), hex(old_password('a'));
+old_password('a')	hex(old_password('a'))
+60671c896665c3fa	36303637316338393636363563336661
+create table t1 as select old_password('a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(16) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select password('a'), hex(password('a'));
+password('a')	hex(password('a'))
+*667F407DE7C6AD07358FA38DAED7828A72014B4E	2A36363746343037444537433641443037333538464133384441454437383238413732303134423445
+create table t1 as select password('a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(41) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select sha('a'), hex(sha('a'));
+sha('a')	hex(sha('a'))
+86f7e437faa5a7fce15d1ddcb9eaeaea377667b8	38366637653433376661613561376663653135643164646362396561656165613337373636376238
+create table t1 as select sha('a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(40) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select sha1('a'), hex(sha1('a'));
+sha1('a')	hex(sha1('a'))
+86f7e437faa5a7fce15d1ddcb9eaeaea377667b8	38366637653433376661613561376663653135643164646362396561656165613337373636376238
+create table t1 as select sha1('a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(40) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(cast('-1' as signed)));
+hex(concat(cast('-1' as signed)))
+2D31
+create table t1 as select concat(cast('-1' as signed)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(cast('1' as unsigned)));
+hex(concat(cast('1' as unsigned)))
+31
+create table t1 as select concat(cast('1' as unsigned)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(cast(1/2 as decimal(5,5))));
+hex(concat(cast(1/2 as decimal(5,5))))
+302E3530303030
+create table t1 as select concat(cast(1/2 as decimal(5,5))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(7) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(cast('2001-01-02 03:04:05' as date)));
+hex(concat(cast('2001-01-02 03:04:05' as date)))
+323030312D30312D3032
+create table t1 as select concat(cast('2001-01-02 03:04:05' as date)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select * from t1;
+c1
+2001-01-02
+drop table t1;
+select hex(concat(cast('2001-01-02 03:04:05' as time)));
+hex(concat(cast('2001-01-02 03:04:05' as time)))
+30333A30343A3035
+create table t1 as select concat(cast('2001-01-02 03:04:05' as time)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(19) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select * from t1;
+c1
+03:04:05
+drop table t1;
+select hex(concat(cast('2001-01-02' as datetime)));
+hex(concat(cast('2001-01-02' as datetime)))
+323030312D30312D30322030303A30303A3030
+create table t1 as select concat(cast('2001-01-02' as datetime)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(29) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select * from t1;
+c1
+2001-01-02 00:00:00
+drop table t1;
+select hex(concat(least(1,2)));
+hex(concat(least(1,2)))
+31
+create table t1 as select concat(least(1,2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(greatest(1,2)));
+hex(concat(greatest(1,2)))
+32
+create table t1 as select concat(greatest(1,2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(case when 11 then 22 else 33 end));
+hex(concat(case when 11 then 22 else 33 end))
+3232
+create table t1 as select concat(case when 11 then 22 else 33 end) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(coalesce(1,2)));
+hex(concat(coalesce(1,2)))
+31
+create table t1 as select concat(coalesce(1,2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat_ws(1,2,3));
+hex(concat_ws(1,2,3))
+323133
+create table t1 as select concat_ws(1,2,3) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(group_concat(1,2,3));
+hex(group_concat(1,2,3))
+313233
+create table t1 as select group_concat(1,2,3) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(342) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select 1 as c1 union select 'a';
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select hex(c1) from t1 order by c1;
+hex(c1)
+31
+61
+drop table t1;
+create table t1 as select concat(last_insert_id()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(benchmark(0,0)));
+hex(concat(benchmark(0,0)))
+30
+create table t1 as select concat(benchmark(0,0)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(sleep(0)));
+hex(concat(sleep(0)))
+30
+create table t1 as select concat(sleep(0)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(is_free_lock('xxxx')));
+hex(concat(is_free_lock('xxxx')))
+31
+create table t1 as select concat(is_free_lock('xxxx')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(is_used_lock('a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(release_lock('a')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(crc32('')));
+hex(concat(crc32('')))
+30
+create table t1 as select concat(crc32('')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(uncompressed_length('')));
+hex(concat(uncompressed_length('')))
+30
+create table t1 as select concat(uncompressed_length('')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(connection_id()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(inet_aton('127.1.1.1')));
+hex(concat(inet_aton('127.1.1.1')))
+32313330373732323235
+create table t1 as select concat(inet_aton('127.1.1.1')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(inet_ntoa(2130772225)));
+hex(concat(inet_ntoa(2130772225)))
+3132372E312E312E31
+create table t1 as select concat(inet_ntoa(2130772225)) as c1;
+select * from t1;
+c1
+127.1.1.1
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(31) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select 1;
+1
+1
+select hex(concat(row_count()));
+hex(concat(row_count()))
+2D31
+create table t1 as select concat(row_count()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(found_rows()));
+hex(concat(found_rows()))
+30
+create table t1 as select concat(found_rows()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(uuid_short()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(uuid()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(36) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select coercibility(uuid()), coercibility(cast('a' as char character set latin1));
+coercibility(uuid())	coercibility(cast('a' as char character set latin1))
+4	2
+select charset(concat(uuid(), cast('a' as char character set latin1)));
+charset(concat(uuid(), cast('a' as char character set latin1)))
+latin1
+create table t1 as select concat(uuid(), cast('a' as char character set latin1)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(37) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(master_pos_wait('non-existent',0,2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(@a1:=1));
+hex(concat(@a1:=1))
+31
+create table t1 as select concat(@a2:=2) as c1, @a3:=3 as c2;
+select hex(c1) from t1;
+hex(c1)
+32
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT '',
+  `c2` int(1) NOT NULL DEFAULT '0'
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+set @a2=1;
+select hex(concat(@a2));
+hex(concat(@a2))
+31
+create table t1 as select concat(@a2) as c1, @a2 as c2;
+select hex(c1) from t1;
+hex(c1)
+31
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(20) CHARACTER SET utf8 DEFAULT NULL,
+  `c2` bigint(20) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(@a1:=sqrt(1)));
+hex(concat(@a1:=sqrt(1)))
+31
+create table t1 as select concat(@a2:=sqrt(1)) as c1, @a3:=sqrt(1) as c2;
+select hex(c1) from t1;
+hex(c1)
+31
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL,
+  `c2` double DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+set @a2=sqrt(1);
+select hex(concat(@a2));
+hex(concat(@a2))
+31
+create table t1 as select concat(@a2) as c1, @a2 as c2;
+select hex(c1) from t1;
+hex(c1)
+31
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL,
+  `c2` double DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(@a1:=1.1));
+hex(concat(@a1:=1.1))
+312E31
+create table t1 as select concat(@a2:=1.1) as c1, @a3:=1.1 as c2;
+select hex(c1) from t1;
+hex(c1)
+312E31
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT '',
+  `c2` decimal(2,1) NOT NULL DEFAULT '0.0'
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+set @a2=1.1;
+select hex(concat(@a2));
+hex(concat(@a2))
+312E31
+create table t1 as select concat(@a2) as c1, @a2 as c2;
+select hex(c1) from t1;
+hex(c1)
+312E31
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(83) CHARACTER SET utf8 DEFAULT NULL,
+  `c2` decimal(65,30) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(@@ft_max_word_len));
+hex(concat(@@ft_max_word_len))
+3834
+create table t1 as select concat(@@ft_max_word_len) as c1;
+select hex(c1) from t1;
+hex(c1)
+3834
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a'='a' IS TRUE));
+hex(concat('a'='a' IS TRUE))
+31
+create table t1 as select concat('a'='a' IS TRUE) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a'='a' IS NOT TRUE));
+hex(concat('a'='a' IS NOT TRUE))
+30
+create table t1 as select concat('a'='a' IS NOT TRUE) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(NOT 'a'='a'));
+hex(concat(NOT 'a'='a'))
+30
+create table t1 as select concat(NOT 'a'='a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a' IS NULL));
+hex(concat('a' IS NULL))
+30
+create table t1 as select concat('a' IS NULL) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a' IS NOT NULL));
+hex(concat('a' IS NOT NULL))
+31
+create table t1 as select concat('a' IS NOT NULL) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a' rlike 'a'));
+hex(concat('a' rlike 'a'))
+31
+create table t1 as select concat('a' IS NOT NULL) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(strcmp('a','b')));
+hex(concat(strcmp('a','b')))
+2D31
+create table t1 as select concat(strcmp('a','b')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a' like 'a'));
+hex(concat('a' like 'a'))
+31
+create table t1 as select concat('a' like 'b') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a' between 'b' and 'c'));
+hex(concat('a' between 'b' and 'c'))
+30
+create table t1 as select concat('a' between 'b' and 'c') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat('a' in ('a','b')));
+hex(concat('a' in ('a','b')))
+31
+create table t1 as select concat('a' in ('a','b')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(interval(23, 1, 15, 17, 30, 44, 200)));
+hex(concat(interval(23, 1, 15, 17, 30, 44, 200)))
+33
+create table t1 as select concat(interval(23, 1, 15, 17, 30, 44, 200)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 (a varchar(10), fulltext key(a));
+insert into t1 values ('a');
+select hex(concat(match (a) against ('a'))) from t1;
+hex(concat(match (a) against ('a')))
+30
+create table t2 as select concat(match (a) against ('a')) as a from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `a` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+select hex(ifnull(1,'a'));
+hex(ifnull(1,'a'))
+31
+create table t1 as select ifnull(1,'a') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(ifnull(1,1)));
+hex(concat(ifnull(1,1)))
+31
+create table t1 as select concat(ifnull(1,1)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(ifnull(1.1,1.1)));
+hex(concat(ifnull(1.1,1.1)))
+312E31
+create table t1 as select concat(ifnull(1.1,1.1)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(if(1,'b',1));
+hex(if(1,'b',1))
+62
+create table t1 as select if(1,'b',1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(if(1,1,'b'));
+hex(if(1,1,'b'))
+31
+create table t1 as select if(1,1,'b') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(if(1,1,1)));
+hex(concat(if(1,1,1)))
+31
+create table t1 as select concat(if(1,1,1)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(nullif(1,2)));
+hex(concat(nullif(1,2)))
+31
+create table t1 as select concat(nullif(1,2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(Dimension(GeomFromText('LINESTRING(0 0,10 10)'))));
+hex(concat(Dimension(GeomFromText('LINESTRING(0 0,10 10)'))))
+31
+create table t1 as select concat(Dimension(GeomFromText('LINSTRING(0 0,10 10)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(NumGeometries(MultiPointFromText('MULTIPOINT(0 0,10 10)'))));
+hex(concat(NumGeometries(MultiPointFromText('MULTIPOINT(0 0,10 10)'))))
+32
+create table t1 as select concat(NumGeometries(MultiPointFromText('MULTIPOINT(0 0,10 10)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(NumPoints(MultiPointFromText('LINESTRING(0 0,10 10)'))));
+hex(concat(NumPoints(MultiPointFromText('LINESTRING(0 0,10 10)'))))
+32
+create table t1 as select concat(NumPoints(MultiPointFromText('LINESTRING(0 0,10 10)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(SRID(MultiPointFromText('MULTIPOINT(0 0,10 10)'))));
+hex(concat(SRID(MultiPointFromText('MULTIPOINT(0 0,10 10)'))))
+30
+create table t1 as select concat(SRID(MultiPointFromText('MULTIPOINT(0 0,10 10)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(NumInteriorRings(PolygonFromText('POLYGON((0 0,50 0,50 50,0 50,0 0), (10 10,20 10,20 20,10 20,10 10))'))));
+hex(concat(NumInteriorRings(PolygonFromText('POLYGON((0 0,50 0,50 50,0 50,0 0), (10 10,20 10,20 20,10 20,10 10))'))))
+31
+create table t1 as select concat(NumInteriorRings(PolygonFromText('POLYGON((0 0,50 0,50 50,0 50,0 0), (10 10,20 10,20 20,10 20,10 10))'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(IsEmpty(GeomFromText('POINT(1 1)'))));
+hex(concat(IsEmpty(GeomFromText('POINT(1 1)'))))
+30
+create table t1 as select concat(IsEmpty(GeomFromText('Point(1 1)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(IsSimple(GeomFromText('POINT(1 1)'))));
+hex(concat(IsSimple(GeomFromText('POINT(1 1)'))))
+30
+create table t1 as select concat(IsSimple(GeomFromText('Point(1 1)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(IsClosed(GeomFromText('LineString(1 1,2 2)'))));
+hex(concat(IsClosed(GeomFromText('LineString(1 1,2 2)'))))
+30
+create table t1 as select concat(IsClosed(GeomFromText('LineString(1 1,2 2)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(Equals(GeomFromText('Point(1 1)'),GeomFromText('Point(1 1)'))));
+hex(concat(Equals(GeomFromText('Point(1 1)'),GeomFromText('Point(1 1)'))))
+31
+create table t1 as select concat(Equals(GeomFromText('Point(1 1)'),GeomFromText('Point(1 1)'))) as c1;
+drop table t1;
+select hex(concat(x(GeomFromText('Point(1 2)'))));
+hex(concat(x(GeomFromText('Point(1 2)'))))
+31
+create table t1 as select concat(x(GeomFromText('Point(1 2)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(y(GeomFromText('Point(1 2)'))));
+hex(concat(y(GeomFromText('Point(1 2)'))))
+32
+create table t1 as select concat(x(GeomFromText('Point(1 2)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(GLength(GeomFromText('LineString(1 2,2 2)'))));
+hex(concat(GLength(GeomFromText('LineString(1 2,2 2)'))))
+31
+create table t1 as select concat(GLength(GeomFromText('LineString(1 2, 2 2)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(Area(GeomFromText('Polygon((0 0,1 0,1 1,0 1,0 0))'))));
+hex(concat(Area(GeomFromText('Polygon((0 0,1 0,1 1,0 1,0 0))'))))
+31
+create table t1 as select concat(Area(GeomFromText('Polygon((0 0,1 0,1 1,0 1,0 0))'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(GeometryType(GeomFromText('Point(1 2)'))));
+hex(concat(GeometryType(GeomFromText('Point(1 2)'))))
+504F494E54
+create table t1 as select concat(GeometryType(GeomFromText('Point(1 2)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(20) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(AsText(GeomFromText('Point(1 2)'))));
+hex(concat(AsText(GeomFromText('Point(1 2)'))))
+504F494E542831203229
+create table t1 as select concat(AsText(GeomFromText('Point(1 2)'))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` longtext CHARACTER SET utf8
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(period_add(200902, 2)));
+hex(concat(period_add(200902, 2)))
+323030393034
+create table t1 as select concat(period_add(200902, 2)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(6) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(period_diff(200902, 200802)));
+hex(concat(period_diff(200902, 200802)))
+3132
+create table t1 as select concat(period_add(200902, 200802)) as c1;
+Warnings:
+Warning	1265	Data truncated for column 'c1' at row 1
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(6) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(to_days(20090224)));
+hex(concat(to_days(20090224)))
+373333383237
+create table t1 as select concat(to_days(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(6) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(dayofmonth(20090224)));
+hex(concat(dayofmonth(20090224)))
+3234
+create table t1 as select concat(dayofmonth(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(dayofyear(20090224)));
+hex(concat(dayofyear(20090224)))
+3535
+create table t1 as select concat(dayofyear(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(hour('10:11:12')));
+hex(concat(hour('10:11:12')))
+3130
+create table t1 as select concat(hour('10:11:12')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(minute('10:11:12')));
+hex(concat(minute('10:11:12')))
+3131
+create table t1 as select concat(minute('10:11:12')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(second('10:11:12')));
+hex(concat(second('10:11:12')))
+3132
+create table t1 as select concat(second('10:11:12')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(quarter(20090224)));
+hex(concat(quarter(20090224)))
+31
+create table t1 as select concat(quarter(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(week(20090224)));
+hex(concat(week(20090224)))
+38
+create table t1 as select concat(week(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(yearweek(20090224)));
+hex(concat(yearweek(20090224)))
+323030393038
+create table t1 as select concat(yearweek(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(6) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(year(20090224)));
+hex(concat(year(20090224)))
+32303039
+create table t1 as select concat(year(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(weekday(20090224)));
+hex(concat(weekday(20090224)))
+31
+create table t1 as select concat(weekday(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(dayofweek(20090224)));
+hex(concat(dayofweek(20090224)))
+33
+create table t1 as select concat(dayofweek(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(unix_timestamp(20090224)));
+hex(concat(unix_timestamp(20090224)))
+31323335343232383030
+create table t1 as select concat(unix_timestamp(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(time_to_sec('10:11:12')));
+hex(concat(time_to_sec('10:11:12')))
+3336363732
+create table t1 as select concat(time_to_sec('10:11:12')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(extract(year from 20090702)));
+hex(concat(extract(year from 20090702)))
+32303039
+create table t1 as select concat(extract(year from 20090702)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(microsecond('12:00:00.123456')));
+hex(concat(microsecond('12:00:00.123456')))
+313233343536
+create table t1 as select concat(microsecond('12:00:00.123456')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(21) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(month(20090224)));
+hex(concat(month(20090224)))
+32
+create table t1 as select concat(month(20090224)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(last_day('2003-02-05')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select c1, hex(c1) from t1;
+c1	hex(c1)
+2003-02-28	323030332D30322D3238
+drop table t1;
+create table t1 as select concat(from_days(730669)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select c1, hex(c1) from t1;
+c1	hex(c1)
+2000-07-03	323030302D30372D3033
+drop table t1;
+create table t1 as select concat(curdate()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(utc_date()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(curtime()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(8) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select repeat('a',20) as c1 limit 0;
+set timestamp=1216359724;
+insert into t1 values (current_date);
+insert into t1 values (current_time);
+select c1, hex(c1) from t1;
+c1	hex(c1)
+2008-07-18	323030382D30372D3138
+08:42:04	30383A34323A3034
+drop table t1;
+create table t1 as select concat(utc_time()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(8) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(sec_to_time(2378)));
+hex(concat(sec_to_time(2378)))
+30303A33393A3338
+create table t1 as select concat(sec_to_time(2378)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(timediff('2001-01-02 00:00:00', '2001-01-01 00:00:00')));
+hex(concat(timediff('2001-01-02 00:00:00', '2001-01-01 00:00:00')))
+32343A30303A3030
+create table t1 as select concat(timediff('2001-01-02 00:00:00', '2001-01-01 00:00:00')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(maketime(10,11,12)));
+hex(concat(maketime(10,11,12)))
+31303A31313A3132
+create table t1 as select concat(maketime(10,11,12)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(23) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(get_format(DATE,'USA'));
+hex(get_format(DATE,'USA'))
+256D2E25642E2559
+create table t1 as select get_format(DATE,'USA') as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(17) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(concat(from_unixtime(1111885200)),4));
+hex(left(concat(from_unixtime(1111885200)),4))
+32303035
+create table t1 as select concat(from_unixtime(1111885200)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(19) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(convert_tz('2004-01-01 12:00:00','+10:00','-6:00')));
+hex(concat(convert_tz('2004-01-01 12:00:00','+10:00','-6:00')))
+323030332D31322D33312032303A30303A3030
+create table t1 as select concat(convert_tz('2004-01-01 12:00:00','+10:00','-6:00')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(19) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(date_add('2004-01-01 12:00:00', interval 1 day)));
+hex(concat(date_add('2004-01-01 12:00:00', interval 1 day)))
+323030342D30312D30322031323A30303A3030
+create table t1 as select concat(date_add('2004-01-01 12:00:00', interval 1 day)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(29) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select * from t1;
+c1
+2004-01-02 12:00:00
+drop table t1;
+select hex(concat(makedate(2009,1)));
+hex(concat(makedate(2009,1)))
+323030392D30312D3031
+create table t1 as select concat(makedate(2009,1)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+select * from t1;
+c1
+2009-01-01
+drop table t1;
+create table t1 as select concat(now()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(19) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(utc_timestamp()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(19) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(sysdate()) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(19) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(addtime('00:00:00','11:22:33')));
+hex(concat(addtime('00:00:00','11:22:33')))
+31313A32323A3333
+create table t1 as select concat(addtime('00:00:00','11:22:33')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(29) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(concat(subtime('23:59:59','11:22:33')));
+hex(concat(subtime('23:59:59','11:22:33')))
+31323A33373A3236
+create table t1 as select concat(subtime('23:59:59','11:22:33')) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(29) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(elt(1,2,3));
+hex(elt(1,2,3))
+32
+create table t1 as select elt(1,2,3) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(export_set(1,2,3,4,2));
+hex(export_set(1,2,3,4,2))
+323433
+create table t1 as select export_set(1,2,3,4,2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(127) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(insert(1133,3,0,22));
+hex(insert(1133,3,0,22))
+313132323333
+create table t1 as select insert(1133,3,0,22) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(6) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(lcase(123));
+hex(lcase(123))
+313233
+create table t1 as select lcase(123) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(left(123,1));
+hex(left(123,1))
+31
+create table t1 as select left(123,1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(lower(123));
+hex(lower(123))
+313233
+create table t1 as select lower(123) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(lpad(1,2,0));
+hex(lpad(1,2,0))
+3031
+create table t1 as select lpad(1,2,0) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(ltrim(1));
+hex(ltrim(1))
+31
+create table t1 as select ltrim(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(mid(1,1,1));
+hex(mid(1,1,1))
+31
+create table t1 as select mid(1,1,1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(repeat(1,2));
+hex(repeat(1,2))
+3131
+create table t1 as select repeat(1,2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(replace(1,1,2));
+hex(replace(1,1,2))
+32
+create table t1 as select replace(1,1,2) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(reverse(12));
+hex(reverse(12))
+3231
+create table t1 as select reverse(12) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(right(123,1));
+hex(right(123,1))
+33
+create table t1 as select right(123,1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(rpad(1,2,0));
+hex(rpad(1,2,0))
+3130
+create table t1 as select rpad(1,2,0) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(rtrim(1));
+hex(rtrim(1))
+31
+create table t1 as select rtrim(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(soundex(1));
+hex(soundex(1))
+
+create table t1 as select soundex(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(substring(1,1,1));
+hex(substring(1,1,1))
+31
+create table t1 as select substring(1,1,1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(trim(1));
+hex(trim(1))
+31
+create table t1 as select trim(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(ucase(1));
+hex(ucase(1))
+31
+create table t1 as select ucase(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+select hex(upper(1));
+hex(upper(1))
+31
+create table t1 as select upper(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select repeat(' ', 64) as a limit 0;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` varchar(64) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+insert into t1 values ("1.1"), ("2.1");
+select a, hex(a) from t1;
+a	hex(a)
+1.1	312E31
+2.1	322E31
+update t1 set a= a + 0.1;
+select a, hex(a) from t1;
+a	hex(a)
+1.2000000000000002	312E32303030303030303030303030303032
+2.2	322E32
+drop table t1;
+create table t1 (a tinyint);
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+31
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(4) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a tinyint zerofill);
+insert into t1 values (1), (10), (100);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+303031	001
+303130	010
+313030	100
+drop table t1;
+create table t1 (a tinyint(4) zerofill);
+insert into t1 values (1), (10), (100);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+30303031	0001
+30303130	0010
+30313030	0100
+drop table t1;
+create table t1 (a decimal(10,2));
+insert into t1 values (123.45);
+select hex(concat(a)) from t1;
+hex(concat(a))
+3132332E3435
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(12) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a smallint);
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+31
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(6) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a smallint zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+3030303031	00001
+3030303130	00010
+3030313030	00100
+3031303030	01000
+3130303030	10000
+drop table t1;
+create table t1 (a mediumint);
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+31
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(9) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a mediumint zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+3030303030303031	00000001
+3030303030303130	00000010
+3030303030313030	00000100
+3030303031303030	00001000
+3030303130303030	00010000
+drop table t1;
+create table t1 (a int);
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+31
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(11) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a int zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+30303030303030303031	0000000001
+30303030303030303130	0000000010
+30303030303030313030	0000000100
+30303030303031303030	0000001000
+30303030303130303030	0000010000
+drop table t1;
+create table t1 (a bigint);
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+31
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(20) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a bigint zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+3030303030303030303030303030303030303031	00000000000000000001
+3030303030303030303030303030303030303130	00000000000000000010
+3030303030303030303030303030303030313030	00000000000000000100
+3030303030303030303030303030303031303030	00000000000000001000
+3030303030303030303030303030303130303030	00000000000000010000
+drop table t1;
+create table t1 (a float);
+insert into t1 values (123.456);
+select hex(concat(a)) from t1;
+hex(concat(a))
+3132332E343536
+select concat(a) from t1;
+concat(a)
+123.456
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(12) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a float zerofill);
+insert into t1 values (1.1), (10.1), (100.1), (1000.1), (10000.1);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+303030303030303030312E31	0000000001.1
+303030303030303031302E31	0000000010.1
+303030303030303130302E31	0000000100.1
+303030303030313030302E31	0000001000.1
+303030303031303030302E31	0000010000.1
+drop table t1;
+create table t1 (a double);
+insert into t1 values (123.456);
+select hex(concat(a)) from t1;
+hex(concat(a))
+3132332E343536
+select concat(a) from t1;
+concat(a)
+123.456
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(22) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a double zerofill);
+insert into t1 values (1.1), (10.1), (100.1), (1000.1), (10000.1);
+select hex(concat(a)), a from t1;
+hex(concat(a))	a
+30303030303030303030303030303030303030312E31	00000000000000000001.1
+30303030303030303030303030303030303031302E31	00000000000000000010.1
+30303030303030303030303030303030303130302E31	00000000000000000100.1
+30303030303030303030303030303030313030302E31	00000000000000001000.1
+30303030303030303030303030303031303030302E31	00000000000000010000.1
+drop table t1;
+create table t1 (a year(2));
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+3031
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(2) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a year);
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+32303031
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(4) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a bit(64));
+insert into t1 values (1);
+select hex(concat(a)) from t1;
+hex(concat(a))
+0000000000000001
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varbinary(64) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a timestamp);
+insert into t1 values (0);
+insert into t1 values (20010203040506);
+insert into t1 values (19800203040506);
+insert into t1 values ('2001-02-03 04:05:06');
+select hex(concat(a)) from t1;
+hex(concat(a))
+303030302D30302D30302030303A30303A3030
+323030312D30322D30332030343A30353A3036
+313938302D30322D30332030343A30353A3036
+323030312D30322D30332030343A30353A3036
+select concat(a) from t1;
+concat(a)
+0000-00-00 00:00:00
+2001-02-03 04:05:06
+1980-02-03 04:05:06
+2001-02-03 04:05:06
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(19) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a date);
+insert into t1 values ('2001-02-03');
+insert into t1 values (20010203);
+select hex(concat(a)) from t1;
+hex(concat(a))
+323030312D30322D3033
+323030312D30322D3033
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(10) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a time);
+insert into t1 values (1);
+insert into t1 values ('01:02:03');
+select hex(concat(a)) from t1;
+hex(concat(a))
+30303A30303A3031
+30313A30323A3033
+select concat(a) from t1;
+concat(a)
+00:00:01
+01:02:03
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(8) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a datetime);
+insert into t1 values ('2001-02-03 04:05:06');
+insert into t1 values (20010203040506);
+select hex(concat(a)) from t1;
+hex(concat(a))
+323030312D30322D30332030343A30353A3036
+323030312D30322D30332030343A30353A3036
+create table t2 as select concat(a) from t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `concat(a)` varchar(19) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1, t2;
+create table t1 (a tinyint);
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(4)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+31
+drop table t1;
+drop view v1;
+create table t1 (a tinyint zerofill);
+insert into t1 values (1), (10), (100);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(3)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+303031
+303130
+313030
+drop table t1;
+drop view v1;
+create table t1 (a tinyint(30) zerofill);
+insert into t1 values (1), (10), (100);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(30)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+303030303030303030303030303030303030303030303030303030303031
+303030303030303030303030303030303030303030303030303030303130
+303030303030303030303030303030303030303030303030303030313030
+drop table t1;
+drop view v1;
+create table t1 (a decimal(10,2));
+insert into t1 values (123.45);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(12)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3132332E3435
+drop table t1;
+drop view v1;
+create table t1 (a smallint);
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(6)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+31
+drop table t1;
+drop view v1;
+create table t1 (a smallint zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(5)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3030303031
+3030303130
+3030313030
+3031303030
+3130303030
+drop table t1;
+drop view v1;
+create table t1 (a mediumint);
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(9)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+31
+drop table t1;
+drop view v1;
+create table t1 (a mediumint zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(8)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3030303030303031
+3030303030303130
+3030303030313030
+3030303031303030
+3030303130303030
+drop table t1;
+drop view v1;
+create table t1 (a int);
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(11)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+31
+drop table t1;
+drop view v1;
+create table t1 (a int zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(10)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+30303030303030303031
+30303030303030303130
+30303030303030313030
+30303030303031303030
+30303030303130303030
+drop table t1;
+drop view v1;
+create table t1 (a bigint);
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(20)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+31
+drop table t1;
+drop view v1;
+create table t1 (a bigint zerofill);
+insert into t1 values (1), (10), (100), (1000), (10000);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(20)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3030303030303030303030303030303030303031
+3030303030303030303030303030303030303130
+3030303030303030303030303030303030313030
+3030303030303030303030303030303031303030
+3030303030303030303030303030303130303030
+drop table t1;
+drop view v1;
+create table t1 (a float);
+insert into t1 values (123.456);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(12)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3132332E343536
+drop table t1;
+drop view v1;
+create table t1 (a float zerofill);
+insert into t1 values (1.1), (10.1), (100.1), (1000.1), (10000.1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(12)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+303030303030303030312E31
+303030303030303031302E31
+303030303030303130302E31
+303030303030313030302E31
+303030303031303030302E31
+drop table t1;
+drop view v1;
+create table t1 (a double);
+insert into t1 values (123.456);
+select concat(a) from t1;
+concat(a)
+123.456
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(22)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3132332E343536
+drop table t1;
+drop view v1;
+create table t1 (a double zerofill);
+insert into t1 values (1.1), (10.1), (100.1), (1000.1), (10000.1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(22)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+30303030303030303030303030303030303030312E31
+30303030303030303030303030303030303031302E31
+30303030303030303030303030303030303130302E31
+30303030303030303030303030303030313030302E31
+30303030303030303030303030303031303030302E31
+drop table t1;
+drop view v1;
+create table t1 (a year(2));
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(2)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+3031
+drop table t1;
+drop view v1;
+create table t1 (a year);
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(4)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+32303031
+drop table t1;
+drop view v1;
+create table t1 (a bit(64));
+insert into t1 values (1);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varbinary(64)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+0000000000000001
+drop table t1;
+drop view v1;
+create table t1 (a timestamp);
+insert into t1 values (0);
+insert into t1 values (20010203040506);
+insert into t1 values (19800203040506);
+insert into t1 values ('2001-02-03 04:05:06');
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(19)	NO			
+select hex(a) from v1;
+hex(a)
+303030302D30302D30302030303A30303A3030
+323030312D30322D30332030343A30353A3036
+313938302D30322D30332030343A30353A3036
+323030312D30322D30332030343A30353A3036
+drop table t1;
+drop view v1;
+create table t1 (a date);
+insert into t1 values ('2001-02-03');
+insert into t1 values (20010203);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(10)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+323030312D30322D3033
+323030312D30322D3033
+drop table t1;
+drop view v1;
+create table t1 (a time);
+insert into t1 values (1);
+insert into t1 values ('01:02:03');
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(8)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+30303A30303A3031
+30313A30323A3033
+drop table t1;
+drop view v1;
+create table t1 (a datetime);
+insert into t1 values ('2001-02-03 04:05:06');
+insert into t1 values (20010203040506);
+create view v1(a) as select concat(a) from t1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+a	varchar(19)	YES		NULL	
+select hex(a) from v1;
+hex(a)
+323030312D30322D30332030343A30353A3036
+323030312D30322D30332030343A30353A3036
+drop table t1;
+drop view v1;
+create function f1 (par1 int) returns int
+begin
+return concat(par1);
+end|
+set @a= f1(1);
+select hex(@a);
+hex(@a)
+1
+select hex(concat(f1(1)));
+hex(concat(f1(1)))
+31
+create table t1 as select f1(1) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(f1(1)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create view v1 as select concat(f1(1)) as c1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+c1	varchar(11)	YES		NULL	
+drop table t1;
+drop view v1;
+drop function f1;
+create function f1 (par1 decimal(18,2)) returns decimal(18,2)
+begin
+return concat(par1);
+end|
+set @a= f1(123.45);
+select hex(@a);
+hex(@a)
+7B
+select hex(concat(f1(123.45)));
+hex(concat(f1(123.45)))
+3132332E3435
+create table t1 as select f1(123.45) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` decimal(18,2) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(f1(123.45)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(20) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create view v1 as select concat(f1(123.45)) as c1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+c1	varchar(20)	YES		NULL	
+drop table t1;
+drop view v1;
+drop function f1;
+create function f1 (par1 float) returns float
+begin
+return concat(par1);
+end|
+set @a= f1(123.45);
+select hex(@a);
+hex(@a)
+7B
+select hex(concat(f1(123.45)));
+hex(concat(f1(123.45)))
+3132332E3435
+create table t1 as select f1(123.45) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` float DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(f1(123.45)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(12) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create view v1 as select concat(f1(123.45)) as c1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+c1	varchar(12)	YES		NULL	
+drop table t1;
+drop view v1;
+drop function f1;
+create function f1 (par1 date) returns date
+begin
+return concat(par1);
+end|
+set @a= f1(cast('2001-01-02' as date));
+select hex(@a);
+hex(@a)
+323030312D30312D3032
+select hex(concat(f1(cast('2001-01-02' as date))));
+hex(concat(f1(cast('2001-01-02' as date))))
+323030312D30312D3032
+create table t1 as select f1(cast('2001-01-02' as date)) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` date DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
+create table t1 as select concat(f1(cast('2001-01-02' as date))) as c1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` varchar(10) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create view v1 as select concat(f1(cast('2001-01-02' as date))) as c1;
+show columns from v1;
+Field	Type	Null	Key	Default	Extra
+c1	varchar(10)	YES		NULL	
+drop table t1;
+drop view v1;
+drop function f1;
+#
+# End of WL#2649 Number-to-string conversions
+#
+#
+# Bug#54668 User variable assignments get wrong type
+#
+SET @x=md5('a');
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+SET @x=old_password('a');
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+SET @x=password('a');
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+SET @x=sha('a');
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+SET @x=sha1('a');
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+SET @x=astext(point(1,2));
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+SET @x=aswkt(point(1,2));
+SELECT charset(@x), collation(@x);
+charset(@x)	collation(@x)
+utf8	utf8_general_ci
+#
+# Bug#54916 GROUP_CONCAT + IFNULL truncates output
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8_general_ci
+CREATE TABLE t1 (a MEDIUMINT NULL) ENGINE=MYISAM;
+INSERT INTO t1 VALUES (1234567);
+SELECT GROUP_CONCAT(IFNULL(a,'')) FROM t1;
+GROUP_CONCAT(IFNULL(a,''))
+1234567
+SELECT GROUP_CONCAT(IF(a,a,'')) FROM t1;
+GROUP_CONCAT(IF(a,a,''))
+1234567
+SELECT GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END) FROM t1;
+GROUP_CONCAT(CASE WHEN a THEN a ELSE '' END)
+1234567
+SELECT COALESCE(a,'') FROM t1 GROUP BY 1;
+Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
+def					COALESCE(a,'')	253	27	7	Y	0	31	33
+COALESCE(a,'')
+1234567
+# All columns must be VARCHAR(9) with the same length:
+CREATE TABLE t2 AS
+SELECT
+CONCAT(a),
+IFNULL(a,''),
+IF(a,a,''),
+CASE WHEN a THEN a ELSE '' END,
+COALESCE(a,'')
+FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT(a)` varchar(9) CHARACTER SET utf8 DEFAULT NULL,
+  `IFNULL(a,'')` varchar(9) CHARACTER SET utf8 NOT NULL DEFAULT '',
+  `IF(a,a,'')` varchar(9) CHARACTER SET utf8 DEFAULT NULL,
+  `CASE WHEN a THEN a ELSE '' END` varchar(9) CHARACTER SET utf8 DEFAULT NULL,
+  `COALESCE(a,'')` varchar(9) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT CONCAT_WS(1,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `CONCAT_WS(1,2,3)` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT INSERT(1133,3,0,22) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `INSERT(1133,3,0,22)` varchar(6) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LCASE(a)` varchar(9) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT UCASE(a) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `UCASE(a)` varchar(9) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPEAT(1,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPEAT(1,2)` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LEFT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LEFT(123,2)` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RIGHT(123,2) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RIGHT(123,2)` varchar(2) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT LTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `LTRIM(123)` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT RTRIM(123) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `RTRIM(123)` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT ELT(1,111,222,333) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `ELT(1,111,222,333)` varchar(3) CHARACTER SET utf8 DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT REPLACE(111,2,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `REPLACE(111,2,3)` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SUBSTRING_INDEX(111,111,1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SUBSTRING_INDEX(111,111,1)` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT MAKE_SET(111,222,3) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `MAKE_SET(111,222,3)` varchar(5) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT SOUNDEX(1) FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `SOUNDEX(1)` varchar(4) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+CREATE TABLE t2 AS SELECT EXPORT_SET(1,'Y','N','',8);
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `EXPORT_SET(1,'Y','N','',8)` varchar(64) CHARACTER SET utf8 NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t2;
+DROP TABLE t1;
+#
+# End of Bug#54916
+#
+#
+# Bug#52159 returning time type from function and empty left join causes debug assertion
+#
+CREATE FUNCTION f1() RETURNS TIME RETURN 1;
+CREATE TABLE t1 (b INT);
+INSERT INTO t1 VALUES (0);
+SELECT f1() FROM t1 LEFT JOIN (SELECT 1 AS a FROM t1 LIMIT 0) AS d ON 1 GROUP BY a;
+f1()
+00:00:01
+DROP FUNCTION f1;
+DROP TABLE t1;
+SET NAMES latin1;
+SET sql_mode='';
+CREATE TABLE t1(a char(215) CHARACTER SET utf8 NOT NULL DEFAULT '', KEY(a));
+INSERT INTO t1 VALUES ();
+SELECT maketime(`a`,`a`,`a`) FROM t1 GROUP BY 1;
+maketime(`a`,`a`,`a`)
+00:00:00
+DROP TABLE t1;
+SET sql_mode=default;
 #
 # End of 5.5 tests
 #
diff --git a/mysql-test/t/case.test b/mysql-test/t/case.test
index 028c64d6de7..e1c807fe32b 100644
--- a/mysql-test/t/case.test
+++ b/mysql-test/t/case.test
@@ -111,6 +111,9 @@ explain extended SELECT
 SHOW CREATE TABLE t1;
 DROP TABLE t1;
 
+--error 1267
+CREATE TABLE t1 SELECT IFNULL('a' COLLATE latin1_swedish_ci, 'b' COLLATE latin1_bin);
+
 # Test for BUG#10151
 SELECT 'case+union+test'
 UNION 
diff --git a/mysql-test/t/ctype_utf8.test b/mysql-test/t/ctype_utf8.test
index f2287488a4f..5b665e24958 100644
--- a/mysql-test/t/ctype_utf8.test
+++ b/mysql-test/t/ctype_utf8.test
@@ -1505,6 +1505,11 @@ CREATE TABLE t2 AS SELECT CONCAT(s1) FROM t1;
 SHOW CREATE TABLE t2;
 DROP TABLE t1, t2;
 
+
+SET NAMES utf8;
+--source include/ctype_numconv.inc
+
+
 --echo #
 --echo # End of 5.5 tests
 --echo #
diff --git a/sql/item.h b/sql/item.h
index 3af33fd2d31..8e8199ecac8 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -547,7 +547,7 @@ public:
      @see Query_arena::free_list
    */
   Item *next;
-  uint32 max_length;
+  uint32 max_length;                    /* Maximum length, in bytes */
   uint name_length;                     /* Length of name */
   int8 marker;
   uint8 decimals;
@@ -1221,6 +1221,18 @@ public:
     max_length= char_to_byte_length_safe(max_char_length_arg,
                                          collation.collation->mbmaxlen);
   }
+  void fix_char_length_ulonglong(ulonglong max_char_length_arg)
+  {
+    ulonglong max_result_length= max_char_length_arg *
+                                 collation.collation->mbmaxlen;
+    if (max_result_length >= MAX_BLOB_WIDTH)
+    {
+      max_length= MAX_BLOB_WIDTH;
+      maybe_null= 1;
+    }
+    else
+      max_length= max_result_length;
+  }
   void fix_length_and_charset_datetime(uint32 max_char_length_arg)
   {
     collation.set(&my_charset_numeric, DERIVATION_NUMERIC, MY_REPERTOIRE_ASCII);
@@ -2825,6 +2837,7 @@ protected:
     cached_result_type= item->result_type();
     unsigned_flag= item->unsigned_flag;
     fixed= item->fixed;
+    collation.set(item->collation);
   }
 
 public:
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc
index c18b79371df..641d3726aca 100644
--- a/sql/item_cmpfunc.cc
+++ b/sql/item_cmpfunc.cc
@@ -2374,6 +2374,7 @@ void Item_func_between::print(String *str, enum_query_type query_type)
 void
 Item_func_ifnull::fix_length_and_dec()
 {
+  uint32 char_length;
   agg_result_type(&hybrid_type, args, 2);
   maybe_null=args[1]->maybe_null;
   decimals= max(args[0]->decimals, args[1]->decimals);
@@ -2381,20 +2382,21 @@ Item_func_ifnull::fix_length_and_dec()
 
   if (hybrid_type == DECIMAL_RESULT || hybrid_type == INT_RESULT) 
   {
-    int len0= args[0]->max_length - args[0]->decimals
+    int len0= args[0]->max_char_length() - args[0]->decimals
       - (args[0]->unsigned_flag ? 0 : 1);
 
-    int len1= args[1]->max_length - args[1]->decimals
+    int len1= args[1]->max_char_length() - args[1]->decimals
       - (args[1]->unsigned_flag ? 0 : 1);
 
-    max_length= max(len0, len1) + decimals + (unsigned_flag ? 0 : 1);
+    char_length= max(len0, len1) + decimals + (unsigned_flag ? 0 : 1);
   }
   else
-    max_length= max(args[0]->max_length, args[1]->max_length);
+    char_length= max(args[0]->max_char_length(), args[1]->max_char_length());
 
   switch (hybrid_type) {
   case STRING_RESULT:
-    agg_arg_charsets_for_comparison(collation, args, arg_count);
+    if (agg_arg_charsets_for_comparison(collation, args, arg_count))
+      return;
     break;
   case DECIMAL_RESULT:
   case REAL_RESULT:
@@ -2406,6 +2408,7 @@ Item_func_ifnull::fix_length_and_dec()
   default:
     DBUG_ASSERT(0);
   }
+  fix_char_length(char_length);
   cached_field_type= agg_field_type(args, 2);
 }
 
@@ -2579,6 +2582,7 @@ Item_func_if::fix_length_and_dec()
     cached_field_type= agg_field_type(args + 1, 2);
   }
 
+  uint32 char_length;
   if ((cached_result_type == DECIMAL_RESULT )
       || (cached_result_type == INT_RESULT))
   {
@@ -2588,10 +2592,11 @@ Item_func_if::fix_length_and_dec()
     int len2= args[2]->max_length - args[2]->decimals
       - (args[2]->unsigned_flag ? 0 : 1);
 
-    max_length=max(len1, len2) + decimals + (unsigned_flag ? 0 : 1);
+    char_length= max(len1, len2) + decimals + (unsigned_flag ? 0 : 1);
   }
   else
-    max_length= max(args[1]->max_length, args[2]->max_length);
+    char_length= max(args[1]->max_char_length(), args[2]->max_char_length());
+  fix_char_length(char_length);
 }
 
 
@@ -2901,7 +2906,7 @@ bool Item_func_case::fix_fields(THD *thd, Item **ref)
 
 void Item_func_case::agg_str_lengths(Item* arg)
 {
-  set_if_bigger(max_length, arg->max_length);
+  fix_char_length(max(max_char_length(), arg->max_char_length()));
   set_if_bigger(decimals, arg->decimals);
   unsigned_flag= unsigned_flag && arg->unsigned_flag;
 }
@@ -3129,9 +3134,10 @@ void Item_func_coalesce::fix_length_and_dec()
   agg_result_type(&hybrid_type, args, arg_count);
   switch (hybrid_type) {
   case STRING_RESULT:
-    count_only_length();
     decimals= NOT_FIXED_DEC;
-    agg_arg_charsets_for_string_result(collation, args, arg_count);
+    if (agg_arg_charsets_for_string_result(collation, args, arg_count))
+      return;
+    count_only_length();
     break;
   case DECIMAL_RESULT:
     count_decimal_length();
diff --git a/sql/item_func.cc b/sql/item_func.cc
index 833eac6893b..95965668882 100644
--- a/sql/item_func.cc
+++ b/sql/item_func.cc
@@ -564,8 +564,9 @@ void Item_func::count_decimal_length()
     set_if_smaller(unsigned_flag, args[i]->unsigned_flag);
   }
   int precision= min(max_int_part + decimals, DECIMAL_MAX_PRECISION);
-  max_length= my_decimal_precision_to_length_no_truncation(precision, decimals,
-                                                           unsigned_flag);
+  fix_char_length(my_decimal_precision_to_length_no_truncation(precision,
+                                                               decimals,
+                                                               unsigned_flag));
 }
 
 
@@ -575,13 +576,14 @@ void Item_func::count_decimal_length()
 
 void Item_func::count_only_length()
 {
-  max_length= 0;
+  uint32 char_length= 0;
   unsigned_flag= 0;
   for (uint i=0 ; i < arg_count ; i++)
   {
-    set_if_bigger(max_length, args[i]->max_length);
+    set_if_bigger(char_length, args[i]->max_char_length());
     set_if_bigger(unsigned_flag, args[i]->unsigned_flag);
   }
+  fix_char_length(char_length);
 }
 
 
diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc
index 808cf92f0bf..1a772950303 100644
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -605,27 +605,15 @@ null:
 
 void Item_func_concat::fix_length_and_dec()
 {
-  ulonglong max_result_length= 0;
+  ulonglong char_length= 0;
 
   if (agg_arg_charsets_for_string_result(collation, args, arg_count))
     return;
 
   for (uint i=0 ; i < arg_count ; i++)
-  {
-    if (args[i]->collation.collation->mbmaxlen != collation.collation->mbmaxlen)
-      max_result_length+= (args[i]->max_length /
-                           args[i]->collation.collation->mbmaxlen) *
-                           collation.collation->mbmaxlen;
-    else
-      max_result_length+= args[i]->max_length;
-  }
+    char_length+= args[i]->max_char_length();
 
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
-  }
-  max_length= (ulong) max_result_length;
+  fix_char_length_ulonglong(char_length);
 }
 
 /**
@@ -962,7 +950,7 @@ null:
 
 void Item_func_concat_ws::fix_length_and_dec()
 {
-  ulonglong max_result_length;
+  ulonglong char_length;
 
   if (agg_arg_charsets_for_string_result(collation, args, arg_count))
     return;
@@ -972,16 +960,11 @@ void Item_func_concat_ws::fix_length_and_dec()
      it is done on parser level in sql_yacc.yy
      so, (arg_count - 2) is safe here.
   */
-  max_result_length= (ulonglong) args[0]->max_length * (arg_count - 2);
+  char_length= (ulonglong) args[0]->max_char_length() * (arg_count - 2);
   for (uint i=1 ; i < arg_count ; i++)
-    max_result_length+=args[i]->max_length;
+    char_length+= args[i]->max_char_length();
 
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
-  }
-  max_length= (ulong) max_result_length;
+  fix_char_length_ulonglong(char_length);
 }
 
 
@@ -1036,6 +1019,7 @@ String *Item_func_reverse::val_str(String *str)
 void Item_func_reverse::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   fix_char_length(args[0]->max_char_length());
 }
 
@@ -1165,22 +1149,17 @@ null:
 
 void Item_func_replace::fix_length_and_dec()
 {
-  ulonglong max_result_length= args[0]->max_length;
-  int diff=(int) (args[2]->max_length - args[1]->max_length);
-  if (diff > 0 && args[1]->max_length)
+  ulonglong char_length= (ulonglong) args[0]->max_char_length();
+  int diff=(int) (args[2]->max_char_length() - args[1]->max_char_length());
+  if (diff > 0 && args[1]->max_char_length())
   {						// Calculate of maxreplaces
-    ulonglong max_substrs= max_result_length/args[1]->max_length;
-    max_result_length+= max_substrs * (uint) diff;
-  }
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
+    ulonglong max_substrs= char_length / args[1]->max_char_length();
+    char_length+= max_substrs * (uint) diff;
   }
-  max_length= (ulong) max_result_length;
-  
+
   if (agg_arg_charsets_for_comparison(collation, args, 3))
     return;
+  fix_char_length_ulonglong(char_length);
 }
 
 
@@ -1235,19 +1214,14 @@ null:
 
 void Item_func_insert::fix_length_and_dec()
 {
-  ulonglong max_result_length;
+  ulonglong char_length;
 
   // Handle character set for args[0] and args[3].
   if (agg_arg_charsets_for_string_result(collation, args, 2, 3))
     return;
-  max_result_length= ((ulonglong) args[0]->max_length+
-                      (ulonglong) args[3]->max_length);
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
-  }
-  max_length= (ulong) max_result_length;
+  char_length= ((ulonglong) args[0]->max_char_length() +
+                (ulonglong) args[3]->max_char_length());
+  fix_char_length_ulonglong(char_length);
 }
 
 
@@ -1287,17 +1261,19 @@ String *Item_str_conv::val_str(String *str)
 void Item_func_lcase::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   multiply= collation.collation->casedn_multiply;
   converter= collation.collation->cset->casedn;
-  max_length= args[0]->max_length * multiply;
+  fix_char_length_ulonglong((ulonglong) args[0]->max_char_length() * multiply);
 }
 
 void Item_func_ucase::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   multiply= collation.collation->caseup_multiply;
   converter= collation.collation->cset->caseup;
-  max_length= args[0]->max_length * multiply;
+  fix_char_length_ulonglong((ulonglong) args[0]->max_char_length() * multiply);
 }
 
 
@@ -1328,21 +1304,23 @@ String *Item_func_left::val_str(String *str)
 
 void Item_str_func::left_right_max_length()
 {
-  max_length=args[0]->max_length;
+  uint32 char_length= args[0]->max_char_length();
   if (args[1]->const_item())
   {
-    int length=(int) args[1]->val_int()*collation.collation->mbmaxlen;
+    int length= (int) args[1]->val_int();
     if (length <= 0)
-      max_length=0;
+      char_length=0;
     else
-      set_if_smaller(max_length,(uint) length);
+      set_if_smaller(char_length, (uint) length);
   }
+  fix_char_length(char_length);
 }
 
 
 void Item_func_left::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   left_right_max_length();
 }
 
@@ -1376,6 +1354,7 @@ String *Item_func_right::val_str(String *str)
 void Item_func_right::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   left_right_max_length();
 }
 
@@ -1432,6 +1411,7 @@ void Item_func_substr::fix_length_and_dec()
   max_length=args[0]->max_length;
 
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   if (args[1]->const_item())
   {
     int32 start= (int32) args[1]->val_int();
@@ -1454,10 +1434,9 @@ void Item_func_substr::fix_length_and_dec()
 
 void Item_func_substr_index::fix_length_and_dec()
 { 
-  max_length= args[0]->max_length;
-
   if (agg_arg_charsets_for_comparison(collation, args, 2))
     return;
+  fix_char_length(args[0]->max_char_length());
 }
 
 
@@ -1783,10 +1762,10 @@ String *Item_func_trim::val_str(String *str)
 
 void Item_func_trim::fix_length_and_dec()
 {
-  max_length= args[0]->max_length;
   if (arg_count == 1)
   {
     agg_arg_charsets_for_string_result(collation, args, 1);
+    DBUG_ASSERT(collation.collation != NULL);
     remove.set_charset(collation.collation);
     remove.set_ascii(" ",1);
   }
@@ -1797,6 +1776,7 @@ void Item_func_trim::fix_length_and_dec()
     if (agg_arg_charsets_for_comparison(collation, &args[1], 2, -1))
       return;
   }
+  fix_char_length(args[0]->max_char_length());
 }
 
 void Item_func_trim::print(String *str, enum_query_type query_type)
@@ -2072,9 +2052,11 @@ bool Item_func_current_user::fix_fields(THD *thd, Item **ref)
 
 void Item_func_soundex::fix_length_and_dec()
 {
+  uint32 char_length= args[0]->max_char_length();
   agg_arg_charsets_for_string_result(collation, args, 1);
-  max_length=args[0]->max_length;
-  set_if_bigger(max_length, 4 * collation.collation->mbminlen);
+  DBUG_ASSERT(collation.collation != NULL);
+  set_if_bigger(char_length, 4);
+  fix_char_length(char_length);
   tmp_value.set_charset(collation.collation);
 }
 
@@ -2251,11 +2233,10 @@ MY_LOCALE *Item_func_format::get_locale(Item *item)
 
 void Item_func_format::fix_length_and_dec()
 {
-  uint char_length= args[0]->max_length/args[0]->collation.collation->mbmaxlen;
-  uint max_sep_count= char_length/3 + (decimals ? 1 : 0) + /*sign*/1;
+  uint32 char_length= args[0]->max_char_length();
+  uint32 max_sep_count= (char_length / 3) + (decimals ? 1 : 0) + /*sign*/1;
   collation.set(default_charset());
-  max_length= (char_length + max_sep_count + decimals) *
-    collation.collation->mbmaxlen;
+  fix_char_length(char_length + max_sep_count + decimals);
   if (arg_count == 3)
     locale= args[2]->basic_const_item() ? get_locale(args[2]) : NULL;
   else
@@ -2375,7 +2356,7 @@ void Item_func_format::print(String *str, enum_query_type query_type)
 
 void Item_func_elt::fix_length_and_dec()
 {
-  max_length=0;
+  uint32 char_length= 0;
   decimals=0;
 
   if (agg_arg_charsets_for_string_result(collation, args + 1, arg_count - 1))
@@ -2383,9 +2364,10 @@ void Item_func_elt::fix_length_and_dec()
 
   for (uint i= 1 ; i < arg_count ; i++)
   {
-    set_if_bigger(max_length,args[i]->max_length);
+    set_if_bigger(char_length, args[i]->max_char_length());
     set_if_bigger(decimals,args[i]->decimals);
   }
+  fix_char_length(char_length);
   maybe_null=1;					// NULL if wrong first arg
 }
 
@@ -2443,14 +2425,14 @@ void Item_func_make_set::split_sum_func(THD *thd, Item **ref_pointer_array,
 
 void Item_func_make_set::fix_length_and_dec()
 {
-  max_length=arg_count-1;
+  uint32 char_length= arg_count - 1; /* Separators */
 
   if (agg_arg_charsets_for_string_result(collation, args, arg_count))
     return;
   
   for (uint i=0 ; i < arg_count ; i++)
-    max_length+=args[i]->max_length;
-
+    char_length+= args[i]->max_char_length();
+  fix_char_length(char_length);
   used_tables_cache|=	  item->used_tables();
   not_null_tables_cache&= item->not_null_tables();
   const_item_cache&=	  item->const_item();
@@ -2616,6 +2598,7 @@ inline String* alloc_buffer(String *res,String *str,String *tmp_value,
 void Item_func_repeat::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   if (args[1]->const_item())
   {
     /* must be longlong to avoid truncation */
@@ -2626,13 +2609,8 @@ void Item_func_repeat::fix_length_and_dec()
     if (count > INT_MAX32)
       count= INT_MAX32;
 
-    ulonglong max_result_length= (ulonglong) args[0]->max_length * count;
-    if (max_result_length >= MAX_BLOB_WIDTH)
-    {
-      max_result_length= MAX_BLOB_WIDTH;
-      maybe_null= 1;
-    }
-    max_length= (ulong) max_result_length;
+    ulonglong char_length= (ulonglong) args[0]->max_char_length() * count;
+    fix_char_length_ulonglong(char_length);
   }
   else
   {
@@ -2703,26 +2681,13 @@ void Item_func_rpad::fix_length_and_dec()
     return;
   if (args[1]->const_item())
   {
-    ulonglong length= 0;
-
-    if (collation.collation->mbmaxlen > 0)
-    {
-      ulonglong temp= (ulonglong) args[1]->val_int();
-
-      /* Assumes that the maximum length of a String is < INT_MAX32. */
-      /* Set here so that rest of code sees out-of-bound value as such. */
-      if (temp > INT_MAX32)
-	temp = INT_MAX32;
-
-      length= temp * collation.collation->mbmaxlen;
-    }
-
-    if (length >= MAX_BLOB_WIDTH)
-    {
-      length= MAX_BLOB_WIDTH;
-      maybe_null= 1;
-    }
-    max_length= (ulong) length;
+    ulonglong char_length= (ulonglong) args[1]->val_int();
+    DBUG_ASSERT(collation.collation->mbmaxlen > 0);
+    /* Assumes that the maximum length of a String is < INT_MAX32. */
+    /* Set here so that rest of code sees out-of-bound value as such. */
+    if (char_length > INT_MAX32)
+      char_length= INT_MAX32;
+    fix_char_length_ulonglong(char_length);
   }
   else
   {
@@ -2806,26 +2771,13 @@ void Item_func_lpad::fix_length_and_dec()
   
   if (args[1]->const_item())
   {
-    ulonglong length= 0;
-
-    if (collation.collation->mbmaxlen > 0)
-    {
-      ulonglong temp= (ulonglong) args[1]->val_int();
-
-      /* Assumes that the maximum length of a String is < INT_MAX32. */
-      /* Set here so that rest of code sees out-of-bound value as such. */
-      if (temp > INT_MAX32)
-        temp= INT_MAX32;
-
-      length= temp * collation.collation->mbmaxlen;
-    }
-
-    if (length >= MAX_BLOB_WIDTH)
-    {
-      length= MAX_BLOB_WIDTH;
-      maybe_null= 1;
-    }
-    max_length= (ulong) length;
+    ulonglong char_length= (ulonglong) args[1]->val_int();
+    DBUG_ASSERT(collation.collation->mbmaxlen > 0);
+    /* Assumes that the maximum length of a String is < INT_MAX32. */
+    /* Set here so that rest of code sees out-of-bound value as such. */
+    if (char_length > INT_MAX32)
+      char_length= INT_MAX32;
+    fix_char_length_ulonglong(char_length);
   }
   else
   {
@@ -3309,8 +3261,8 @@ String* Item_func_export_set::val_str(String* str)
 
 void Item_func_export_set::fix_length_and_dec()
 {
-  uint length=max(args[1]->max_length,args[2]->max_length);
-  uint sep_length=(arg_count > 3 ? args[3]->max_length : 1);
+  uint32 length= max(args[1]->max_char_length(), args[2]->max_char_length());
+  uint32 sep_length= (arg_count > 3 ? args[3]->max_char_length() : 1);
 
   if (agg_arg_charsets_for_string_result(collation,
                                          args + 1, min(4, arg_count) - 1))