Re: NOT EXIST for PREPARE
От | Andres Freund |
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Тема | Re: NOT EXIST for PREPARE |
Дата | |
Msg-id | 20160322130118.GI3790@awork2.anarazel.de обсуждение исходный текст |
Ответ на | NOT EXIST for PREPARE (Yury Zhuravlev <u.zhuravlev@postgrespro.ru>) |
Ответы |
Re: NOT EXIST for PREPARE
Re: NOT EXIST for PREPARE Re: NOT EXIST for PREPARE Re: NOT EXIST for PREPARE |
Список | pgsql-hackers |
Hi, On 2016-03-22 12:41:43 +0300, Yury Zhuravlev wrote: > Do I understand correctly the only way know availability PREPARE it will > appeal to pg_prepared_statements? > I think this is not a good practice. In some cases, we may not be aware of > the PREPARE made (pgpool). Moreover, it seems popular question in the > Internet: http://stackoverflow.com/questions/1193020/php-postgresql-check-if-a-prepared-statement-already-exists > > What do you think about adding NOT EXIST functionality to PREPARE? Not very much. If you're not in in control of the prepared statements, you can't be sure it's not an entirely different statement. So NOT EXISTS doesn't really buy you anything, you'd still need to compare the statement somehow. Andres
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