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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-06-10 15:22:25 -0400 |
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| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-06-10 15:22:32 -0400 |
| commit | 73b7f48f78d27b1baf1a6541cbaae0fe6bd6186d (patch) | |
| tree | c5e92bd3ae8eed8d8cf3519c10b12982d44bcfa8 /src/backend/utils/adt/numeric.c | |
| parent | c83e2029909c5411ca11fd841851016f1f9810e6 (diff) | |
| download | postgresql-73b7f48f78d27b1baf1a6541cbaae0fe6bd6186d.tar.gz postgresql-73b7f48f78d27b1baf1a6541cbaae0fe6bd6186d.zip | |
Improve run-time partition pruning to handle any stable expression.
The initial coding of the run-time-pruning feature only coped with cases
where the partition key(s) are compared to Params. That is a bit silly;
we can allow it to work with any non-Var-containing stable expression, as
long as we take special care with expressions containing PARAM_EXEC Params.
The code is hardly any longer this way, and it's considerably clearer
(IMO at least). Per gripe from Pavel Stehule.
David Rowley, whacked around a bit by me
Discussion: https://postgr.es/m/CAFj8pRBjrufA3ocDm8o4LPGNye9Y+pm1b9kCwode4X04CULG3g@mail.gmail.com
Diffstat (limited to 'src/backend/utils/adt/numeric.c')
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