Re: MSSQL versus Postgres timing

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От Bricklen Anderson
Тема Re: MSSQL versus Postgres timing
Дата
Msg-id 41FFBB95.3090306@PresiNET.com
обсуждение исходный текст
Ответ на Re: MSSQL versus Postgres timing  (Michael Fuhr <mike@fuhr.org>)
Список pgsql-sql
Michael Fuhr wrote:
> On Tue, Feb 01, 2005 at 11:54:11AM -0500, Joel Fradkin wrote:
> 
>>A table with 645,000 records for associates has view (basically select *
>>from tblassociates where clientnum = 'test')
>>
>>This is taking 13 seconds in postgres and 3 seconds in MSSQL.
> 
> 
> Please post the EXPLAIN ANALYZE output for the slow query, once
> with enable_seqscan on and once with it off.  For example:
> 
> SET enable_seqscan TO on;  -- if not already on
> EXPLAIN ANALYZE SELECT * FROM tblassociates WHERE clientnum = 'test';
> 
> SET enable_seqscan TO off;
> EXPLAIN ANALYZE SELECT * FROM tblassociates WHERE clientnum = 'test';
> 
> 
>>Be glad to provide the view and tables etc.
> 
> 
> Please do -- it might help us spot something that could be improved.
> What version of PostgreSQL are you using?
> 

Also, is clientnum a string datatype, or are you doing implicit type conversion?


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