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-rw-r--r--include/my_base.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/my_base.h b/include/my_base.h
index e2b6d010d69..cfdab6a49ba 100644
--- a/include/my_base.h
+++ b/include/my_base.h
@@ -131,10 +131,14 @@ enum ha_extra_function {
HA_EXTRA_IGNORE_DUP_KEY, /* Dup keys don't rollback everything*/
HA_EXTRA_NO_IGNORE_DUP_KEY,
/*
- Instructs InnoDB to retrieve all columns, not just those where
- field->query_id is the same as the current query id
+ Instructs InnoDB to retrieve all columns (except in key read), not just
+ those where field->query_id is the same as the current query id
*/
HA_EXTRA_RETRIEVE_ALL_COLS,
+ /*
+ Instructs InnoDB to retrieve at least all the primary key columns
+ */
+ HA_EXTRA_RETRIEVE_PRIMARY_KEY,
HA_EXTRA_PREPARE_FOR_DELETE,
HA_EXTRA_PREPARE_FOR_UPDATE, /* Remove read cache if problems */
HA_EXTRA_PRELOAD_BUFFER_SIZE /* Set buffer size for preloading */