Bug#30081: "ON UPDATE CURRENT_TIMESTAMP" wasn't shown by the SHOW FIELDS

command and reported to a client.

The fact that a timestamp field will be set to NO on UPDATE wasn't shown 
by the SHOW COMMAND and reported to a client through connectors. This led to
problems in the ODBC connector and might lead to a user confusion.

A new filed flag called ON_UPDATE_NOW_FLAG is added. 
Constructors of the Field_timestamp set it when a field should be set to NOW
on UPDATE.

The get_schema_column_record function now reports whether a timestamp field
will be set to NOW on UPDATE.


mysql-test/t/information_schema.test:
  A test case adjusted after fixing the bug#30081.
mysql-test/r/type_timestamp.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/type_ranges.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/show_check.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/ps_5merge.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/ps_4heap.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/ps_3innodb.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/ps_2myisam.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/metadata.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/log_tables.result:
  Adjusted a test case after fixing bug#30081.
mysql-test/r/information_schema.result:
  A test case adjusted after fixing the bug#30081.
mysql-test/r/grant.result:
  Adjusted a test case after fixing bug#30081.
tests/mysql_client_test.c:
  A test case adjusted after fixing the bug#30081.
sql/sql_show.cc:
  Bug#30081: "ON UPDATE CURRENT_TIMESTAMP" wasn't shown by the SHOW FIELDS
  command and reported to a client.
  The get_schema_column_record function now reports whether a timestamp field
  will be set to NOW on UPDATE.
sql/field.cc:
  Bug#30081: "ON UPDATE CURRENT_TIMESTAMP" wasn't shown by the SHOW FIELDS
  command and reported to a client.
  Constructors of the Field_timestamp set the ON_UPDATE_NOW_FLAG on a field when
  it should be set to NOW on UPDATE.
include/mysql_com.h:
  Bug#30081: "ON UPDATE CURRENT_TIMESTAMP" wasn't shown by the SHOW FIELDS
  command and reported to a client.
  A new filed flag called ON_UPDATE_NOW_FLAG  is added.
client/mysql.cc:
  Bug#30081: "ON UPDATE CURRENT_TIMESTAMP" wasn't shown by the SHOW FIELDS
  command and reported to a client.
  The fieldflag2str function is adjusted to print the ON_UPDATE_NOW_FLAG.

1 files changed, 2 insertions, 2 deletions

diff --git a/mysql-test/r/show_check.result b/mysql-test/r/show_check.result
index 04a5253e6a8..ff32d2a1512 100644
--- a/mysql-test/r/show_check.result
+++ b/mysql-test/r/show_check.result
@@ -979,7 +979,7 @@ def			COLUMNS	CHARACTER_SET_NAME	CHARACTER_SET_NAME	253	192	0	Y	0	0	33
 def			COLUMNS	COLLATION_NAME	COLLATION_NAME	253	192	0	Y	0	0	33
 def			COLUMNS	COLUMN_TYPE	COLUMN_TYPE	252	589815	7	N	17	0	33
 def			COLUMNS	COLUMN_KEY	COLUMN_KEY	253	9	3	N	1	0	33
-def			COLUMNS	EXTRA	EXTRA	253	60	0	N	1	0	33
+def			COLUMNS	EXTRA	EXTRA	253	81	0	N	1	0	33
 def			COLUMNS	PRIVILEGES	PRIVILEGES	253	240	31	N	1	0	33
 def			COLUMNS	COLUMN_COMMENT	COLUMN_COMMENT	253	765	0	N	1	0	33
 TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	COLUMN_DEFAULT	IS_NULLABLE	DATA_TYPE	CHARACTER_SET_NAME	COLLATION_NAME	COLUMN_TYPE	COLUMN_KEY	EXTRA	PRIVILEGES	COLUMN_COMMENT
@@ -998,7 +998,7 @@ def			COLUMNS	COLUMN_TYPE	Type	252	589815	7	N	17	0	33
 def			COLUMNS	IS_NULLABLE	Null	253	9	2	N	1	0	33
 def			COLUMNS	COLUMN_KEY	Key	253	9	3	N	1	0	33
 def			COLUMNS	COLUMN_DEFAULT	Default	252	589815	0	Y	16	0	33
-def			COLUMNS	EXTRA	Extra	253	60	0	N	1	0	33
+def			COLUMNS	EXTRA	Extra	253	81	0	N	1	0	33
 Field	Type	Null	Key	Default	Extra
 c	int(11)	NO	PRI	NULL	
 ----------------------------------------------------------------