On 03/14/2013 03:22 PM, Artur Zając wrote:

Why speed of executing (or planning) some very simple query from string in pl/pgsql is dependent from whole query or why “FOR r IN EXECUTE q” is significally slower from “FOR r IN query”?



The whole point of EXECUTE is that it's reparsed and planned each time. You should expect it to be quite a bit slower, and avoid using EXECUTE wherever possible.

cheers

andrew



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