Re: dubious optimization of the function in SELECT INTO target list
От | Alvaro Herrera |
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Тема | Re: dubious optimization of the function in SELECT INTO target list |
Дата | |
Msg-id | 20151008175439.GJ4405@alvherre.pgsql обсуждение исходный текст |
Ответ на | Re: dubious optimization of the function in SELECT INTO target list (Oleksii Kliukin <alexk@hintbits.com>) |
Ответы |
Re: dubious optimization of the function in SELECT INTO target list
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Список | pgsql-general |
Oleksii Kliukin wrote: > Thank you, now it’s clear. I have to say there is no guarantee that > the computation would be useless. Someone might be calling a function > that updates/deletes rows in the SELECT INTO block, being forced to > use SELECT INTO by inability of pl/pgSQL to just discard the result of > a normal SELECT. I know one can use a loop or call PERFORM, but in > some cases (a complex CTE computing the data for the function being > called at the end, which updates the tables with this data) actually > using SELECT INTO looks like the easiest path to achieve the desired > result. So this whole issue is just because it is not possible to use PERFORM alongside WITH? -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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