Re: Anything I can do to speed up this query?

Forgot to mention the version I am using.

PostgreSQL 7.4.13

Thanks

On Tue, 2006-12-05 at 15:56 -0500, Wei Weng wrote:
> I have a table that has roughly 200,000 entries and many columns.
>
> The query is very simple:
>
> SELECT Field1, Field2, Field3... FieldN FROM TargetTable;
>
> TargetTable has an index that is Field1.
>
> The thing is on this machine with 1Gig Ram, the above query still takes
> about 20 seconds to finish. And I need it to run faster, ideally around
> 5 seconds.
>
> I already increased the following configurations:
>
> Test=> show sort_mem;
> sort_mem
> ----------
> 262144
> (1 row)
>
> Test=> show shared_buffers ;
> shared_buffers
> ----------------
> 60800
> (1 row)
>
>
> And the EXPLAIN ANALYZE result is also as follows:
>
> QUERY
> PLAN
> -------------------------------------------------------------------------------------------------------------------------------------------
> Seq Scan on TargetTable (cost=0.00..28471.72 rows=210872 width=988)
> (actual time=0.037..6084.385 rows=211286 loops=1)
> Total runtime: 6520.499 ms
>
> what else can I improve? Thanks in advance
>
>
> Wei
>
>
>
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