Ensure that fields declared with NOT NULL doesn't have DEFAULT values if not specified and if not timestamp or auto_increment

In original code, sometimes one got an automatic DEFAULT value in some cases, in other cases not.

For example:
create table t1 (a int primary key)      - No default
create table t2 (a int, primary key(a))  - DEFAULT 0
create table t1 SELECT ....              - Default for all fields, even if they where defined as NOT NULL
ALTER TABLE ... MODIFY could sometimes add an unexpected DEFAULT value.

The patch is quite big because we had some many test cases that used
CREATE ... SELECT or CREATE ... (...PRIMARY KEY(xxx)) which doesn't have an automatic DEFAULT anymore.

Other things:
- Removed warnings from InnoDB when waiting from semaphore (got this when testing things with --big)

1 files changed, 93 insertions, 93 deletions

diff --git a/mysql-test/r/func_str.result b/mysql-test/r/func_str.result
index 06d748fa72f..aa3de4fc915 100644
--- a/mysql-test/r/func_str.result
+++ b/mysql-test/r/func_str.result
@@ -726,34 +726,34 @@ t1	CREATE TABLE `t1` (
   `bin(130)` varchar(64) DEFAULT NULL,
   `oct(130)` varchar(64) DEFAULT NULL,
   `conv(130,16,10)` varchar(64) DEFAULT NULL,
-  `hex(130)` varchar(6) NOT NULL DEFAULT '',
-  `char(130)` varbinary(4) NOT NULL DEFAULT '',
-  `format(130,10)` varchar(37) NOT NULL DEFAULT '',
-  `left(_latin2'a',1)` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `right(_latin2'a',1)` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `lcase(_latin2'a')` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `ucase(_latin2'a')` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `substring(_latin2'a',1,1)` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `concat(_latin2'a',_latin2'b')` varchar(2) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `lpad(_latin2'a',4,_latin2'b')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `rpad(_latin2'a',4,_latin2'b')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `concat_ws(_latin2'a',_latin2'b')` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `make_set(255,_latin2'a',_latin2'b',_latin2'c')` varchar(5) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `export_set(255,_latin2'y',_latin2'n',_latin2' ')` varchar(127) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `trim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `ltrim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `rtrim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `trim(LEADING _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `trim(TRAILING _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `trim(BOTH _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `repeat(_latin2'a',10)` varchar(10) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `reverse(_latin2'ab')` varchar(2) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `quote(_latin2'ab')` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `soundex(_latin2'ab')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `substring(_latin2'ab',1)` varchar(2) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `insert(_latin2'abcd',2,3,_latin2'ef')` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `replace(_latin2'abcd',_latin2'b',_latin2'B')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
-  `encode('abcd','ab')` varbinary(4) NOT NULL DEFAULT ''
+  `hex(130)` varchar(6) NOT NULL,
+  `char(130)` varbinary(4) NOT NULL,
+  `format(130,10)` varchar(37) NOT NULL,
+  `left(_latin2'a',1)` varchar(1) CHARACTER SET latin2 NOT NULL,
+  `right(_latin2'a',1)` varchar(1) CHARACTER SET latin2 NOT NULL,
+  `lcase(_latin2'a')` varchar(1) CHARACTER SET latin2 NOT NULL,
+  `ucase(_latin2'a')` varchar(1) CHARACTER SET latin2 NOT NULL,
+  `substring(_latin2'a',1,1)` varchar(1) CHARACTER SET latin2 NOT NULL,
+  `concat(_latin2'a',_latin2'b')` varchar(2) CHARACTER SET latin2 NOT NULL,
+  `lpad(_latin2'a',4,_latin2'b')` varchar(4) CHARACTER SET latin2 NOT NULL,
+  `rpad(_latin2'a',4,_latin2'b')` varchar(4) CHARACTER SET latin2 NOT NULL,
+  `concat_ws(_latin2'a',_latin2'b')` varchar(1) CHARACTER SET latin2 NOT NULL,
+  `make_set(255,_latin2'a',_latin2'b',_latin2'c')` varchar(5) CHARACTER SET latin2 NOT NULL,
+  `export_set(255,_latin2'y',_latin2'n',_latin2' ')` varchar(127) CHARACTER SET latin2 NOT NULL,
+  `trim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL,
+  `ltrim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL,
+  `rtrim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL,
+  `trim(LEADING _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL,
+  `trim(TRAILING _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL,
+  `trim(BOTH _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL,
+  `repeat(_latin2'a',10)` varchar(10) CHARACTER SET latin2 NOT NULL,
+  `reverse(_latin2'ab')` varchar(2) CHARACTER SET latin2 NOT NULL,
+  `quote(_latin2'ab')` varchar(6) CHARACTER SET latin2 NOT NULL,
+  `soundex(_latin2'ab')` varchar(4) CHARACTER SET latin2 NOT NULL,
+  `substring(_latin2'ab',1)` varchar(2) CHARACTER SET latin2 NOT NULL,
+  `insert(_latin2'abcd',2,3,_latin2'ef')` varchar(6) CHARACTER SET latin2 NOT NULL,
+  `replace(_latin2'abcd',_latin2'b',_latin2'B')` varchar(4) CHARACTER SET latin2 NOT NULL,
+  `encode('abcd','ab')` varbinary(4) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1;
 create table t1 (a char character set latin2);
@@ -2848,7 +2848,7 @@ CREATE TABLE t1 AS SELECT format(123,2,'no_NO');
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `format(123,2,'no_NO')` varchar(37) NOT NULL DEFAULT ''
+  `format(123,2,'no_NO')` varchar(37) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT * FROM t1;
 format(123,2,'no_NO')
@@ -2980,7 +2980,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',63)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(85) NOT NULL DEFAULT ''
+  `to_base64` varchar(85) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3002,7 +3002,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',62)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(85) NOT NULL DEFAULT ''
+  `to_base64` varchar(85) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3024,7 +3024,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',61)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(85) NOT NULL DEFAULT ''
+  `to_base64` varchar(85) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3046,7 +3046,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',60)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(81) NOT NULL DEFAULT ''
+  `to_base64` varchar(81) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3068,7 +3068,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',59)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(81) NOT NULL DEFAULT ''
+  `to_base64` varchar(81) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3090,7 +3090,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',58)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(81) NOT NULL DEFAULT ''
+  `to_base64` varchar(81) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3112,7 +3112,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',57)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(76) NOT NULL DEFAULT ''
+  `to_base64` varchar(76) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3133,7 +3133,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',56)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(76) NOT NULL DEFAULT ''
+  `to_base64` varchar(76) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3154,7 +3154,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',55)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(76) NOT NULL DEFAULT ''
+  `to_base64` varchar(76) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3175,7 +3175,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',54)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(72) NOT NULL DEFAULT ''
+  `to_base64` varchar(72) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3196,7 +3196,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',53)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(72) NOT NULL DEFAULT ''
+  `to_base64` varchar(72) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3217,7 +3217,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',52)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(72) NOT NULL DEFAULT ''
+  `to_base64` varchar(72) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3238,7 +3238,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',51)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(68) NOT NULL DEFAULT ''
+  `to_base64` varchar(68) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3259,7 +3259,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',50)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(68) NOT NULL DEFAULT ''
+  `to_base64` varchar(68) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3280,7 +3280,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',49)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(68) NOT NULL DEFAULT ''
+  `to_base64` varchar(68) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3301,7 +3301,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',48)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(64) NOT NULL DEFAULT ''
+  `to_base64` varchar(64) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3322,7 +3322,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',47)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(64) NOT NULL DEFAULT ''
+  `to_base64` varchar(64) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3343,7 +3343,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',46)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(64) NOT NULL DEFAULT ''
+  `to_base64` varchar(64) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3364,7 +3364,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',45)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(60) NOT NULL DEFAULT ''
+  `to_base64` varchar(60) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3385,7 +3385,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',44)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(60) NOT NULL DEFAULT ''
+  `to_base64` varchar(60) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3406,7 +3406,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',43)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(60) NOT NULL DEFAULT ''
+  `to_base64` varchar(60) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3427,7 +3427,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',42)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(56) NOT NULL DEFAULT ''
+  `to_base64` varchar(56) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3448,7 +3448,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',41)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(56) NOT NULL DEFAULT ''
+  `to_base64` varchar(56) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3469,7 +3469,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',40)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(56) NOT NULL DEFAULT ''
+  `to_base64` varchar(56) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3490,7 +3490,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',39)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(52) NOT NULL DEFAULT ''
+  `to_base64` varchar(52) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3511,7 +3511,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',38)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(52) NOT NULL DEFAULT ''
+  `to_base64` varchar(52) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3532,7 +3532,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',37)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(52) NOT NULL DEFAULT ''
+  `to_base64` varchar(52) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3553,7 +3553,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',36)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(48) NOT NULL DEFAULT ''
+  `to_base64` varchar(48) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3574,7 +3574,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',35)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(48) NOT NULL DEFAULT ''
+  `to_base64` varchar(48) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3595,7 +3595,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',34)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(48) NOT NULL DEFAULT ''
+  `to_base64` varchar(48) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3616,7 +3616,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',33)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(44) NOT NULL DEFAULT ''
+  `to_base64` varchar(44) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3637,7 +3637,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',32)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(44) NOT NULL DEFAULT ''
+  `to_base64` varchar(44) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3658,7 +3658,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',31)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(44) NOT NULL DEFAULT ''
+  `to_base64` varchar(44) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3679,7 +3679,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',30)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(40) NOT NULL DEFAULT ''
+  `to_base64` varchar(40) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3700,7 +3700,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',29)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(40) NOT NULL DEFAULT ''
+  `to_base64` varchar(40) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3721,7 +3721,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',28)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(40) NOT NULL DEFAULT ''
+  `to_base64` varchar(40) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3742,7 +3742,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',27)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(36) NOT NULL DEFAULT ''
+  `to_base64` varchar(36) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3763,7 +3763,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',26)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(36) NOT NULL DEFAULT ''
+  `to_base64` varchar(36) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3784,7 +3784,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',25)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(36) NOT NULL DEFAULT ''
+  `to_base64` varchar(36) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3805,7 +3805,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',24)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(32) NOT NULL DEFAULT ''
+  `to_base64` varchar(32) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3826,7 +3826,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',23)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(32) NOT NULL DEFAULT ''
+  `to_base64` varchar(32) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3847,7 +3847,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',22)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(32) NOT NULL DEFAULT ''
+  `to_base64` varchar(32) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3868,7 +3868,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',21)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(28) NOT NULL DEFAULT ''
+  `to_base64` varchar(28) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3889,7 +3889,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',20)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(28) NOT NULL DEFAULT ''
+  `to_base64` varchar(28) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3910,7 +3910,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',19)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(28) NOT NULL DEFAULT ''
+  `to_base64` varchar(28) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3931,7 +3931,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',18)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(24) NOT NULL DEFAULT ''
+  `to_base64` varchar(24) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3952,7 +3952,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',17)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(24) NOT NULL DEFAULT ''
+  `to_base64` varchar(24) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3973,7 +3973,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',16)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(24) NOT NULL DEFAULT ''
+  `to_base64` varchar(24) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -3994,7 +3994,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',15)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(20) NOT NULL DEFAULT ''
+  `to_base64` varchar(20) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4015,7 +4015,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',14)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(20) NOT NULL DEFAULT ''
+  `to_base64` varchar(20) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4036,7 +4036,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',13)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(20) NOT NULL DEFAULT ''
+  `to_base64` varchar(20) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4057,7 +4057,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',12)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(16) NOT NULL DEFAULT ''
+  `to_base64` varchar(16) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4078,7 +4078,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',11)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(16) NOT NULL DEFAULT ''
+  `to_base64` varchar(16) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4099,7 +4099,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',10)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(16) NOT NULL DEFAULT ''
+  `to_base64` varchar(16) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4120,7 +4120,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',9)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(12) NOT NULL DEFAULT ''
+  `to_base64` varchar(12) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4141,7 +4141,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',8)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(12) NOT NULL DEFAULT ''
+  `to_base64` varchar(12) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4162,7 +4162,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',7)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(12) NOT NULL DEFAULT ''
+  `to_base64` varchar(12) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4183,7 +4183,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',6)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(8) NOT NULL DEFAULT ''
+  `to_base64` varchar(8) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4204,7 +4204,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',5)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(8) NOT NULL DEFAULT ''
+  `to_base64` varchar(8) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4225,7 +4225,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',4)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(8) NOT NULL DEFAULT ''
+  `to_base64` varchar(8) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4246,7 +4246,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',3)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(4) NOT NULL DEFAULT ''
+  `to_base64` varchar(4) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4267,7 +4267,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',2)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(4) NOT NULL DEFAULT ''
+  `to_base64` varchar(4) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4288,7 +4288,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',1)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` varchar(4) NOT NULL DEFAULT ''
+  `to_base64` varchar(4) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)
@@ -4309,7 +4309,7 @@ CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',0)) AS to_base64;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `to_base64` char(0) NOT NULL DEFAULT ''
+  `to_base64` char(0) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SELECT to_base64, LENGTH(to_base64) FROM t1;
 to_base64	LENGTH(to_base64)