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Bug#7806 - insert on duplicate key and auto-update of timestamp

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A fix of the original patch.
Correctly clear a bit from an enum value.
This commit is contained in:
unknown
2005-04-22 12:30:09 +02:00
parent cfac923cf5
commit 3431b2179f
2 changed files with 16 additions and 9 deletions
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16
sql/table.h
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@ -58,18 +58,22 @@ typedef struct st_filesort_info
/*
Values in this enum are used to indicate during which operations value
of TIMESTAMP field should be set to current timestamp.
WARNING: The values are used for bit operations. If you change the enum,
you must keep the bitwise relation of the values. For example:
(int) TIMESTAMP_AUTO_SET_ON_BOTH ==
(int) TIMESTAMP_AUTO_SET_ON_INSERT | (int) TIMESTAMP_AUTO_SET_ON_UPDATE.
Values in this enum are used to indicate how a tables TIMESTAMP field
should be treated. It can be set to the current timestamp on insert or
update or both.
WARNING: The values are used for bit operations. If you change the
enum, you must keep the bitwise relation of the values. For example:
(int) TIMESTAMP_AUTO_SET_ON_BOTH must be equal to
(int) TIMESTAMP_AUTO_SET_ON_INSERT | (int) TIMESTAMP_AUTO_SET_ON_UPDATE.
We use an enum here so that the debugger can display the value names.
*/
enum timestamp_auto_set_type
{
TIMESTAMP_NO_AUTO_SET= 0, TIMESTAMP_AUTO_SET_ON_INSERT= 1,
TIMESTAMP_AUTO_SET_ON_UPDATE= 2, TIMESTAMP_AUTO_SET_ON_BOTH= 3
};
#define clear_timestamp_auto_bits(_target_, _bits_) \
(_target_)= (enum timestamp_auto_set_type)((int)(_target_) & ~(int)(_bits_))
/* Table cache entry struct */