diff options
Diffstat (limited to 'src/include/nodes/lockoptions.h')
| -rw-r--r-- | src/include/nodes/lockoptions.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/include/nodes/lockoptions.h b/src/include/nodes/lockoptions.h index c293595ccb..8e8ccff43c 100644 --- a/src/include/nodes/lockoptions.h +++ b/src/include/nodes/lockoptions.h @@ -43,4 +43,19 @@ typedef enum LockWaitPolicy LockWaitError } LockWaitPolicy; +/* + * Possible lock modes for a tuple. + */ +typedef enum LockTupleMode +{ + /* SELECT FOR KEY SHARE */ + LockTupleKeyShare, + /* SELECT FOR SHARE */ + LockTupleShare, + /* SELECT FOR NO KEY UPDATE, and UPDATEs that don't modify key columns */ + LockTupleNoKeyExclusive, + /* SELECT FOR UPDATE, UPDATEs that modify key columns, and DELETE */ + LockTupleExclusive +} LockTupleMode; + #endif /* LOCKOPTIONS_H */ |