RE: [GENERAL] Re: Poor performance - need advice

I'm pretty sure I have seen a similar post before. The problem is that
Postgres assumes the constant you are using is an int4. Try casting it to
int8 and see if that helps.

SELECT * FROM ClientTable WHERE ClientNumber=1234566789::int8;

Phil Culberson
DAT Services

-----Original Message-----
From: Mark Alliban [mailto:MarkA(at)idnltd(dot)com]
Sent: Wednesday, February 02, 2000 10:16 AM
To: pgsql-general(at)postgresql(dot)org
Subject: [GENERAL] Re: Poor performance - need advice

>We have a table with 95,000 records, indexed on an int8 type
(ClientNumber).
>It is currently taking up to 10 seconds to retrieve one row based upon the
>following statement:
>
>SELECT * FROM ClientTable WHERE ClientNumber=1234566789;
>
>The client numbers are random and there is currently no locking on the
>database. I am running SCO OpenServer, PostgreSQL version 6.5.3. Is there
>any way we can reduce the time taken by this query?

I have tried an EXPLAIN of the above statement, and it tells me that
Postgres is doing a Seq Scan on the table to return the results, even though
it should be using the index. How can I make sure that it will always use
the index when I specify ClientNumber?

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