Re: Retrieving result of COUNT(*) with PHP

On 3/28/07, Mihail Mihailov <Mihail(dot)Mihailov(at)uta(dot)fi> wrote:
>
>
> Another way to calculate number of rows in the result is to use
> pg_num_rows function.
> $res = pg_query("SELECT COUNT(*) AS result_count FROM etc. WHERE etc.");
> $count = pg_num_rows($res);

I dont think this will work as expected. PostgreSQL will return 1 row and
your $count var will be 1. If you do SELECT * FROM it would return the
proper result. Not very effective for speed though.

http://www.varlena.com/GeneralBits/120.php has some good suggestions for
dealing with count(*) speed issues.

Gavin