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add and amend comments for clarity

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This commit is contained in:
antony@ppcg5.local 2007-06-29 13:55:16 -07:00
parent b0b0b0fbc4
commit 68af862c77
2 changed files with 6 additions and 3 deletions
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5
include/my_base.h
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@ -170,9 +170,8 @@ enum ha_extra_function {
HA_EXTRA_DELETE_CANNOT_BATCH,
HA_EXTRA_UPDATE_CANNOT_BATCH,
/*
Inform handler that write_row() should immediately report constraint
violations because a INSERT...ON DUPLICATE KEY UPDATE is in being
performed.
Inform handler that an "INSERT...ON DUPLICATE KEY UPDATE" will be
executed. This condition is unset by HA_EXTRA_NO_IGNORE_DUP_KEY.
*/
HA_EXTRA_INSERT_WITH_UPDATE
};

4
sql/ha_federated.cc
View file

@ -2555,6 +2555,10 @@ int ha_federated::extra(ha_extra_function operation)
replace_duplicates= TRUE;
break;
case HA_EXTRA_WRITE_CANNOT_REPLACE:
/*
We use this flag to ensure that we do not create an "INSERT IGNORE"
statement when inserting new rows into the remote table.
*/
replace_duplicates= FALSE;
break;
case HA_EXTRA_INSERT_WITH_UPDATE: