Re: Stored procedure slower than sql?

Parameterized.

IE (very simplified)

CREATE OR REPLACE FUNCTION my_function(IN param1 BIGINT, IN param2
INTEGER)
RETURNS my_type
SECURITY DEFINER
AS
$$
    /* my_type = (a,b,c) */
    Select a,b,c
    FROM my_table
    WHERE indexed_column = $1
    AND partition_constraint_column = $2;
$$
LANGUAGE SQL;




Matthew A. Peters
Sr. Software Engineer, Haydrian Corp.
matthew@haydrian.com
(mobile) 425-941-6566
 Haydrian Corp.
-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Thursday, October 26, 2006 9:15 AM
To: Matthew Peters
Cc: pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Stored procedure slower than sql?
Importance: High

"Matthew Peters" <matthew@haydrian.com> writes:
> How can a stored procedure containing a single query not implement the
> same execution plan (assumption based on the dramatic performance
> difference) that an identical ad-hoc query generates?

Parameterized vs non parameterized query?

            regards, tom lane