Thank you, Tom for you answer
2011.03.14 19:17, Tom Lane rašė:
That function property *allows* the optimizer to
invoke the function fewer times than would happen in an un-optimized
query. It does not *require* it to do so.
Thank you for clearing that for me. I think these 2 sentences in documentation (
http://www.postgresql.org/docs/current/interactive/xfunc-volatility.html) would prevent misunderstandings in the future.
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Julius Tuskenis
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