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add and amend comments for clarity

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include/my_base.h:
  amend comment for clarity
sql/ha_federated.cc:
  add comment
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unknown 2007-06-29 13:55:16 -07:00
parent 94beb7cd8d
commit b4fe5e4408
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_DELETE_CANNOT_BATCH,
HA_EXTRA_UPDATE_CANNOT_BATCH, HA_EXTRA_UPDATE_CANNOT_BATCH,
/* /*
Inform handler that write_row() should immediately report constraint Inform handler that an "INSERT...ON DUPLICATE KEY UPDATE" will be
violations because a INSERT...ON DUPLICATE KEY UPDATE is in being executed. This condition is unset by HA_EXTRA_NO_IGNORE_DUP_KEY.
performed.
*/ */
HA_EXTRA_INSERT_WITH_UPDATE 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; replace_duplicates= TRUE;
break; break;
case HA_EXTRA_WRITE_CANNOT_REPLACE: 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; replace_duplicates= FALSE;
break; break;
case HA_EXTRA_INSERT_WITH_UPDATE: case HA_EXTRA_INSERT_WITH_UPDATE: