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-rw-r--r--src/backend/executor/nodeWindowAgg.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/src/backend/executor/nodeWindowAgg.c b/src/backend/executor/nodeWindowAgg.c
index a56c3e89fd5..fe5369a0c7b 100644
--- a/src/backend/executor/nodeWindowAgg.c
+++ b/src/backend/executor/nodeWindowAgg.c
@@ -1559,6 +1559,7 @@ update_frameheadpos(WindowAggState *winstate)
* reach end of partition, we will leave frameheadpos = end+1 and
* framehead_slot empty.
*/
+ int sortCol = node->ordColIdx[0];
bool sub,
less;
@@ -1593,9 +1594,9 @@ update_frameheadpos(WindowAggState *winstate)
bool headisnull,
currisnull;
- headval = slot_getattr(winstate->framehead_slot, 1,
+ headval = slot_getattr(winstate->framehead_slot, sortCol,
&headisnull);
- currval = slot_getattr(winstate->ss.ss_ScanTupleSlot, 1,
+ currval = slot_getattr(winstate->ss.ss_ScanTupleSlot, sortCol,
&currisnull);
if (headisnull || currisnull)
{
@@ -1809,6 +1810,7 @@ update_frametailpos(WindowAggState *winstate)
* necessary. Note that if we reach end of partition, we will
* leave frametailpos = end+1 and frametail_slot empty.
*/
+ int sortCol = node->ordColIdx[0];
bool sub,
less;
@@ -1843,9 +1845,9 @@ update_frametailpos(WindowAggState *winstate)
bool tailisnull,
currisnull;
- tailval = slot_getattr(winstate->frametail_slot, 1,
+ tailval = slot_getattr(winstate->frametail_slot, sortCol,
&tailisnull);
- currval = slot_getattr(winstate->ss.ss_ScanTupleSlot, 1,
+ currval = slot_getattr(winstate->ss.ss_ScanTupleSlot, sortCol,
&currisnull);
if (tailisnull || currisnull)
{