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Add NOWAIT option to SELECT FOR UPDATE/SHARE.

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Original patch by Hans-Juergen Schoenig, revisions by Karel Zak
and Tom Lane.
This commit is contained in:
Tom Lane
2005-08-01 20:31:16 +00:00
parent ca7abcd89d
commit 2a4fad1a0e
28 changed files with 387 additions and 157 deletions
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19
src/backend/nodes/equalfuncs.c
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@@ -18,7 +18,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.251 2005/08/01 04:03:56 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.252 2005/08/01 20:31:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -644,6 +644,7 @@ _equalQuery(Query *a, Query *b)
COMPARE_NODE_FIELD(jointree);
COMPARE_NODE_FIELD(rowMarks);
COMPARE_SCALAR_FIELD(forUpdate);
COMPARE_SCALAR_FIELD(rowNoWait);
COMPARE_NODE_FIELD(targetList);
COMPARE_NODE_FIELD(groupClause);
COMPARE_NODE_FIELD(havingQual);
@@ -704,8 +705,7 @@ _equalSelectStmt(SelectStmt *a, SelectStmt *b)
COMPARE_NODE_FIELD(sortClause);
COMPARE_NODE_FIELD(limitOffset);
COMPARE_NODE_FIELD(limitCount);
COMPARE_NODE_FIELD(lockedRels);
COMPARE_SCALAR_FIELD(forUpdate);
COMPARE_NODE_FIELD(lockingClause);
COMPARE_SCALAR_FIELD(op);
COMPARE_SCALAR_FIELD(all);
COMPARE_NODE_FIELD(larg);
@@ -1649,6 +1649,16 @@ _equalDefElem(DefElem *a, DefElem *b)
return true;
}
static bool
_equalLockingClause(LockingClause *a, LockingClause *b)
{
COMPARE_NODE_FIELD(lockedRels);
COMPARE_SCALAR_FIELD(forUpdate);
COMPARE_SCALAR_FIELD(nowait);
return true;
}
static bool
_equalRangeTblEntry(RangeTblEntry *a, RangeTblEntry *b)
{
@@ -2229,6 +2239,9 @@ equal(void *a, void *b)
case T_DefElem:
retval = _equalDefElem(a, b);
break;
case T_LockingClause:
retval = _equalLockingClause(a, b);
break;
case T_RangeTblEntry:
retval = _equalRangeTblEntry(a, b);
break;