cast affects use of indexes ? - Mailing list pgsql-general

From Alex Vinogradovs
Subject cast affects use of indexes ?
Date
Msg-id 1216852649.4848.139.camel@localhost
Whole thread Raw
Responses Re: cast affects use of indexes ?
List pgsql-general
Guys,

I've got a table with an indexed column of a numeric user
type (implemented in C). When I run a select on that table
in a form of :

select * from sometable where column = 89464;

sequential scan is used...

When I rewrite the query to use cast like this :

select * from sometable where column = 89464::mytype;

bitmap index scan and bitmap heap scan are used.

Is it possible to make it work properly without
use of explicit casts ? Thanks!


Best regards,
Alex Vinogradovs





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