Re: optimizing Postgres queries

David Teran <david.teran@cluster9.com>

From: David Teran <david.teran@cluster9.com>
To: Shridhar Daithankar <shridhar_daithankar@myrealbox.com>
Cc: pgsql-performance@postgresql.org
Date: 2004-01-05T12:18:06Z
Lists: pgsql-performance
Hi,

> The performance will likely to be the same. Its just that integer 
> happens to
> be default integer type and hence it does not need an explicit 
> typecast. ( I
> don't remember exactly which integer is default but it is either of 
> int2,int4
> and int8...:-))
>
The docs say int4 is much faster than int8, but i will check this.

> The performance diffference is likely due to use of index, which is in 
> turn
> due to typecasting. If you need bigint, you should use them. Just 
> remember to
> typecast whenever required.

This is my bigger problem: i am using EOF (OR mapping tool) which frees 
me more or less form writing a lot of SQL. If i need to typecast to use 
an index then i have to see how to do this with this framework.

Regards David