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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-11-09 12:02:24 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-11-09 12:02:46 -0500 |
| commit | 24b83a5082541bdb1b333b7fcbe92f194128595c (patch) | |
| tree | 1fe4d18dc9972e6672d67f787d98ddf913e782b7 /src/backend/tcop/postgres.c | |
| parent | 180cf876d457c260291af070d883c5db5033cb3a (diff) | |
| download | postgresql-24b83a5082541bdb1b333b7fcbe92f194128595c.tar.gz postgresql-24b83a5082541bdb1b333b7fcbe92f194128595c.zip | |
Doc: clarify data type behavior of COALESCE and NULLIF.
After studying the code, NULLIF is a lot more subtle than you might
have guessed.
Discussion: https://postgr.es/m/160486028730.25500.15740897403028593550@wrigleys.postgresql.org
Diffstat (limited to 'src/backend/tcop/postgres.c')
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