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Diffstat (limited to 'src/backend/executor/nodeMergejoin.c')
-rw-r--r--src/backend/executor/nodeMergejoin.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/backend/executor/nodeMergejoin.c b/src/backend/executor/nodeMergejoin.c
index d6245e61874..208c0fb76ac 100644
--- a/src/backend/executor/nodeMergejoin.c
+++ b/src/backend/executor/nodeMergejoin.c
@@ -138,11 +138,12 @@ typedef struct MergeJoinClauseData
/*
* The comparison strategy in use, and the lookup info to let us call the
- * btree comparison support function.
+ * btree comparison support function, and the collation to use.
*/
bool reverse; /* if true, negate the cmpfn's output */
bool nulls_first; /* if true, nulls sort low */
FmgrInfo cmpfinfo;
+ Oid collation;
} MergeJoinClauseData;
/* Result type for MJEvalOuterValues and MJEvalInnerValues */
@@ -242,7 +243,6 @@ MJExamineQuals(List *mergeclauses,
/* Set up the fmgr lookup information */
fmgr_info(cmpproc, &(clause->cmpfinfo));
- fmgr_info_set_collation(collation, &(clause->cmpfinfo));
/* Fill the additional comparison-strategy flags */
if (opstrategy == BTLessStrategyNumber)
@@ -254,6 +254,9 @@ MJExamineQuals(List *mergeclauses,
clause->nulls_first = nulls_first;
+ /* ... and the collation too */
+ clause->collation = collation;
+
iClause++;
}
@@ -429,7 +432,7 @@ MJCompare(MergeJoinState *mergestate)
* OK to call the comparison function.
*/
InitFunctionCallInfoData(fcinfo, &(clause->cmpfinfo), 2,
- NULL, NULL);
+ clause->collation, NULL, NULL);
fcinfo.arg[0] = clause->ldatum;
fcinfo.arg[1] = clause->rdatum;
fcinfo.argnull[0] = false;