Fix thinko for case of outer join where inner table is empty: should

output first outer tuple before advancing...

Author: tglsfdc

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. */