On 1/23/07, Laurent Manchon <lmanchon@xxxxxxxxxxxxxx> wrote:
Hi, I have a slow response of my PostgreSQL database 7.4 using this query below on a table with 800000 rows: select count(*)from tbl; PostgreSQL return result in 28 sec every time. although MS-SQL return result in 0.02 sec every time. My server is a DELL PowerEdge 2600 with bi-processor Xeon at 3.2 Ghz with 3GBytes RAM
if you need a fast approximate answer (up to date as of last analyze), you can do something like: select reltuples from pg_class where relname = 'tbl' and relkind = 'r'; if you need a fast exact answer, you need to write a trigger. merlin
