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Commit9fe802c

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Fix brown-paper-bag bug in commit0a459ce.
RANGE_OFFSET comparisons need to examine the first ORDER BY column,which isn't necessarily the first column in the incoming tuples.No idea how this slipped through initial testing.Per bug #15082 from Zhou Digoal.Discussion:https://postgr.es/m/151939899974.1461.9411971793110285476@wrigleys.postgresql.org
1 parent8af87f4 commit9fe802c

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‎src/backend/executor/nodeWindowAgg.c

Lines changed: 6 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -1559,6 +1559,7 @@ update_frameheadpos(WindowAggState *winstate)
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* reach end of partition, we will leave frameheadpos = end+1 and
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* framehead_slot empty.
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*/
1562+
intsortCol=node->ordColIdx[0];
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boolsub,
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less;
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@@ -1593,9 +1594,9 @@ update_frameheadpos(WindowAggState *winstate)
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boolheadisnull,
15941595
currisnull;
15951596

1596-
headval=slot_getattr(winstate->framehead_slot,1,
1597+
headval=slot_getattr(winstate->framehead_slot,sortCol,
15971598
&headisnull);
1598-
currval=slot_getattr(winstate->ss.ss_ScanTupleSlot,1,
1599+
currval=slot_getattr(winstate->ss.ss_ScanTupleSlot,sortCol,
15991600
&currisnull);
16001601
if (headisnull||currisnull)
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{
@@ -1809,6 +1810,7 @@ update_frametailpos(WindowAggState *winstate)
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* necessary. Note that if we reach end of partition, we will
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* leave frametailpos = end+1 and frametail_slot empty.
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*/
1813+
intsortCol=node->ordColIdx[0];
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boolsub,
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less;
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@@ -1843,9 +1845,9 @@ update_frametailpos(WindowAggState *winstate)
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booltailisnull,
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currisnull;
18451847

1846-
tailval=slot_getattr(winstate->frametail_slot,1,
1848+
tailval=slot_getattr(winstate->frametail_slot,sortCol,
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&tailisnull);
1848-
currval=slot_getattr(winstate->ss.ss_ScanTupleSlot,1,
1850+
currval=slot_getattr(winstate->ss.ss_ScanTupleSlot,sortCol,
18491851
&currisnull);
18501852
if (tailisnull||currisnull)
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{

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