diff options
Diffstat (limited to 'src/include/nodes/parsenodes.h')
| -rw-r--r-- | src/include/nodes/parsenodes.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 450a89fe85b..2078526092b 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -13,7 +13,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.411 2009/10/26 02:26:41 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.412 2009/10/28 14:55:46 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -118,6 +118,7 @@ typedef struct Query bool hasSubLinks; /* has subquery SubLink */ bool hasDistinctOn; /* distinctClause is from DISTINCT ON */ bool hasRecursive; /* WITH RECURSIVE was specified */ + bool hasForUpdate; /* FOR UPDATE or FOR SHARE was specified */ List *cteList; /* WITH list (of CommonTableExpr's) */ @@ -803,7 +804,12 @@ typedef struct WindowClause * parser output representation of FOR UPDATE/SHARE clauses * * Query.rowMarks contains a separate RowMarkClause node for each relation - * identified as a FOR UPDATE/SHARE target. + * identified as a FOR UPDATE/SHARE target. If FOR UPDATE/SHARE is applied + * to a subquery, we generate RowMarkClauses for all normal and subquery rels + * in the subquery, but they are marked pushedDown = true to distinguish them + * from clauses that were explicitly written at this query level. Also, + * Query.hasForUpdate tells whether there were explicit FOR UPDATE/SHARE + * clauses in the current query level. */ typedef struct RowMarkClause { @@ -811,6 +817,7 @@ typedef struct RowMarkClause Index rti; /* range table index of target relation */ bool forUpdate; /* true = FOR UPDATE, false = FOR SHARE */ bool noWait; /* NOWAIT option */ + bool pushedDown; /* pushed down from higher query level? */ } RowMarkClause; /* |