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Pass collations to functions in FunctionCallInfoData, not FmgrInfo.

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Since collation is effectively an argument, not a property of the function,
FmgrInfo is really the wrong place for it; and this becomes critical in
cases where a cached FmgrInfo is used for varying purposes that might need
different collation settings.  Fix by passing it in FunctionCallInfoData
instead.  In particular this allows a clean fix for bug #5970 (record_cmp
not working).  This requires touching a bit more code than the original
method, but nobody ever thought that collations would not be an invasive
patch...
This commit is contained in:
Tom Lane
2011-04-12 19:19:24 -04:00
parent 88543ecfec
commit d64713df7e
49 changed files with 552 additions and 418 deletions
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5
src/backend/executor/nodeMergeAppend.c
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@ -327,8 +327,9 @@ heap_compare_slots(MergeAppendState *node, SlotNumber slot1, SlotNumber slot2)
}
else
{
compare = DatumGetInt32(FunctionCall2(&scankey->sk_func,
datum1, datum2));
compare = DatumGetInt32(FunctionCall2Coll(&scankey->sk_func,
scankey->sk_collation,
datum1, datum2));
if (compare != 0)
{
if (scankey->sk_flags & SK_BT_DESC)