Re: Query is fast and function is slow - Mailing list pgsql-sql

From Tom Lane
Subject Re: Query is fast and function is slow
Date
Msg-id 16166.1165509626@sss.pgh.pa.us
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In response to Re: Query is fast and function is slow  (Richard Ray <rray@mstc.state.ms.us>)
Responses Re: Query is fast and function is slow  (Richard Ray <rray@mstc.state.ms.us>)
List pgsql-sql
Richard Ray <rray@mstc.state.ms.us> writes:
> On Thu, 7 Dec 2006, Thomas Pundt wrote:
>> Just a guess: is the column "doc_num" really of type text? Maybe using "text"
>> in the function lets the planner choose a sequential scan?

> Actually "doc_num" is char(9)
> I changed text to char(9) and got same slow results

You need to make the second argument type "name", too, if you have a lot
of users.
        regards, tom lane


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