From 780992316fc8ad4732998f00b2489f0730156ea0 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed, 13 Dec 2000 23:45:46 +0000
Subject: [PATCH] Fix thinko for case of outer join where inner table is empty:
should output first outer tuple before advancing...
---
src/backend/executor/nodeMergejoin.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/src/backend/executor/nodeMergejoin.c b/src/backend/executor/nodeMergejoin.c
index dbeaa7a2a53..e7e8ebb1c59 100644
--- a/src/backend/executor/nodeMergejoin.c
+++ b/src/backend/executor/nodeMergejoin.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/executor/nodeMergejoin.c,v 1.39 2000/11/16 22:30:22 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/executor/nodeMergejoin.c,v 1.40 2000/12/13 23:45:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -537,12 +537,13 @@ ExecMergeJoin(MergeJoin *node)
if (doFillOuter)
{
/*
- * Need to emit left-join tuples for remaining
- * outer tuples. We set MatchedOuter = true to
- * force the ENDINNER state to advance outer.
+ * Need to emit left-join tuples for all outer tuples,
+ * including the one we just fetched. We set
+ * MatchedOuter = false to force the ENDINNER state
+ * to emit this tuple before advancing outer.
*/
mergestate->mj_JoinState = EXEC_MJ_ENDINNER;
- mergestate->mj_MatchedOuter = true;
+ mergestate->mj_MatchedOuter = false;
break;
}
/* Otherwise we're done. */
--
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