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(parent: 276d449) | patch
Do not allow Unique nodes to be scanned backwards. The code claimed that it
authorTom Lane <tgl@sss.pgh.pa.us>
Tue, 5 Aug 2008 21:28:54 +0000 (21:28 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Tue, 5 Aug 2008 21:28:54 +0000 (21:28 +0000)
commit8c9647e8da087c19b86b9b51fec5c744b1f1d18f
treeaa3ecc15c92635054eb996ef6774d3f5c2c02891tree
parent276d4491eb4e23888cac82b6f2ae5170c73bfc3ccommit | diff
Do not allow Unique nodes to be scanned backwards.  The code claimed that it
would work, but in fact it didn't return the same rows when moving backwards
as when moving forwards.  This would have no visible effect in a DISTINCT
query (at least assuming the column datatypes use a strong definition of
equality), but it gave entirely wrong answers for DISTINCT ON queries.
src/backend/executor/execAmi.c diff | blob | blame | history
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