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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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include/mysql_com.h
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@@ -94,6 +94,7 @@ enum enum_server_command
#define TIMESTAMP_FLAG 1024 /* Field is a timestamp */
#define SET_FLAG 2048 /* field is a set */
#define NO_DEFAULT_VALUE_FLAG 4096 /* Field doesn't have default value */
#define ON_UPDATE_NOW_FLAG 8192 /* Field is set to NOW on UPDATE */
#define NUM_FLAG 32768 /* Field is num (for clients) */
#define PART_KEY_FLAG 16384 /* Intern; Part of some key */
#define GROUP_FLAG 32768 /* Intern: Group field */