Re: browsing table with 2 million records

> We have a GUI that let user browser through the record page by page at
> about 25 records a time. (Don't ask me why but we have to have this
> GUI). This translates to something like
>
>   select count(*) from table   <-- to give feedback about the DB size

Do you have a integer field that is an ID that increments? E.g; serial?

>   select * from table order by date limit 25 offset 0

You could use a cursor.

Sincerely,

Joshua D. Drake


>
> Tables seems properly indexed, with vacuum and analyze ran regularly.
> Still this very basic SQLs takes up to a minute run.
>
> I read some recent messages that select count(*) would need a table
> scan for Postgre. That's disappointing. But I can accept an
> approximation if there are some way to do so. But how can I optimize
> select * from table order by date limit x offset y? One minute
> response time is not acceptable.
>
> Any help would be appriciated.
>
> Wy
>
>
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