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

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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.
This commit is contained in:
evgen@moonbone.local
2007-11-13 13:24:48 +00:00
parent 055e3e78ce
commit 4fa7ee92e6
17 changed files with 36 additions and 24 deletions
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4
mysql-test/r/log_tables.result
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@@ -50,7 +50,7 @@ general_log CREATE TABLE `general_log` (
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='General log'
show fields from mysql.general_log;
Field Type Null Key Default Extra
event_time timestamp NO CURRENT_TIMESTAMP
event_time timestamp NO CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP
user_host mediumtext NO NULL
thread_id int(11) NO NULL
server_id int(11) NO NULL
@@ -73,7 +73,7 @@ slow_log CREATE TABLE `slow_log` (
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
show fields from mysql.slow_log;
Field Type Null Key Default Extra
start_time timestamp NO CURRENT_TIMESTAMP
start_time timestamp NO CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP
user_host mediumtext NO NULL
query_time time NO NULL
lock_time time NO NULL