Re: Using VIEW to simplify code...
| От | Tom Lane |
|---|---|
| Тема | Re: Using VIEW to simplify code... |
| Дата | |
| Msg-id | 22625.1037735261@sss.pgh.pa.us обсуждение исходный текст |
| Ответ на | Using VIEW to simplify code... (Chris Gamache <cgg007@yahoo.com>) |
| Ответы |
Re: Using VIEW to simplify code...
|
| Список | pgsql-sql |
Chris Gamache <cgg007@yahoo.com> writes:
> Right now I dynamicly generate the SQL for an incredibly ugly 4 table join
> based on user information client-side. I got the bright idea to create a view
> and then run a MUUUCH simpler client-side query on that view. The problem is
> that PostgreSQL apparantly runs the view FIRST and then applies the criteria
> AFTER assembling the whole view.
Not necessarily; it starts with that (which after all is what you wrote)
and tries to transform it into something more efficient. But it's not
as smart as a person ;-).
> If you MUST have the giant-and-hard-to-maintain-client-generated-sql
> statement and its related explain, I'll produce it.
If you want help, you must provide details. The PG version number is
relevant also.
regards, tom lane
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