diff options
Diffstat (limited to 'src/include/nodes/parsenodes.h')
| -rw-r--r-- | src/include/nodes/parsenodes.h | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index adc870543b6..450a89fe85b 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 1.410 2009/10/14 22:14:24 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.411 2009/10/26 02:26:41 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -800,28 +800,17 @@ typedef struct WindowClause /* * RowMarkClause - - * representation of FOR UPDATE/SHARE clauses - * - * We create a separate RowMarkClause node for each target relation. In the - * output of the parser and rewriter, all RowMarkClauses have rti == prti and - * isParent == false. When the planner discovers that a target relation - * is the root of an inheritance tree, it sets isParent true, and adds an - * additional RowMarkClause to the list for each child relation (including - * the target rel itself in its role as a child). The child entries have - * rti == child rel's RT index, prti == parent's RT index, and can therefore - * be recognized as children by the fact that prti != rti. - * rowmarkId is a unique ID for the RowMarkClause across an entire query, - * and is assigned during planning; it's always zero upstream of the planner. + * 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. */ typedef struct RowMarkClause { NodeTag type; Index rti; /* range table index of target relation */ - Index prti; /* range table index of parent relation */ - Index rowmarkId; /* unique identifier assigned by planner */ bool forUpdate; /* true = FOR UPDATE, false = FOR SHARE */ bool noWait; /* NOWAIT option */ - bool isParent; /* set by planner when expanding inheritance */ } RowMarkClause; /* |