Re: SQL question

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От Stephan Szabo
Тема Re: SQL question
Дата
Msg-id 20020201113627.O27951-100000@megazone23.bigpanda.com
обсуждение исходный текст
Ответ на SQL question  (Bolt Thrower <tyr@teiresias.net>)
Список pgsql-admin
On Fri, 25 Jan 2002, Bolt Thrower wrote:

> In the query:
>
>     select field, length(field) from table where length(field) < 10;
>
> How many times is the length() function called for each row?  Once or
> twice?

Pretty sure it'll be twice.


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