Re: Short-circuit boolean evaluation
| От | pasman pasmański |
|---|---|
| Тема | Re: Short-circuit boolean evaluation |
| Дата | |
| Msg-id | BANLkTimuc4=Scmw7b11q5ztbHXqLT9KTgQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Short-circuit boolean evaluation (Jon Smark <jon.smark@yahoo.com>) |
| Ответы |
Re: Short-circuit boolean evaluation
|
| Список | pgsql-general |
No. 2011/4/30, Jon Smark <jon.smark@yahoo.com>: > Hi, > > Does Postgresql perform short-circuit boolean evaluation both in SQL > and PL/pgSQL functions? As an example, suppose I have a function called > "do_stuff" which is computationally intensive. In the example below, > will it be called for rows for which the first predicate (foobar.id = $1) > is false? > > SELECT count(*) FROM foobar WHERE foobar.id = $1 AND do_stuff (foobar.name); > > Thanks! > Jon > > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > -- ------------ pasman
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