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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2010-11-18 11:53:49 -0500 |
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| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2010-11-18 11:54:34 -0500 |
| commit | 48c348f86ce09c668af7cf271757c3f156f28344 (patch) | |
| tree | ea8223183f60b7a8bdd0171dbd22df4c02c09408 /src/backend/utils/adt/numutils.c | |
| parent | 1fc2d60d8c9d8096373e94a8f8c9b28d2082b7d3 (diff) | |
| download | postgresql-48c348f86ce09c668af7cf271757c3f156f28344.tar.gz postgresql-48c348f86ce09c668af7cf271757c3f156f28344.zip | |
Dept of second thoughts: don't try to push LIMIT below a SRF.
If we have Limit->Result->Sort, the Result might be projecting a tlist
that contains a set-returning function. If so, it's possible for the
SRF to sometimes return zero rows, which means we could need to fetch
more than N rows from the Sort in order to satisfy LIMIT N.
So top-N sorting cannot be used in this scenario.
Diffstat (limited to 'src/backend/utils/adt/numutils.c')
0 files changed, 0 insertions, 0 deletions