hi ,
whats wrong with this function , i am getting syntax error which is syntax
error at or near "+="
LINE 13: set sql += ' bpoverlap, centredistance from vwchrcomparesit...
^
how this problem can be solved.
thanks
CREATE OR REPLACE FUNCTION getsitesbytfid(user_datadetailid int, kb_id
int,bp_overlap int,chr_ varchar ,centre_distance int)
RETURNS table(chr_u varchar,start_u int,end_u int,region_size_u int,chr_kb
varchar,start_kb int ,end_kb int,region_size_kb int,bpoverlap
int,centredistance int)
as
$BODY$
DECLARE sql varchar ;
BEGIN
if centre_distance= NULL THEN
set centre_distance = 1;
set sql = 'select chr_u, start_u, end_u, regionsize_u, chr_kb,
start_kb, end_kb, regionsize_kb, ';
set sql += ' bpoverlap, centredistance from vwchrcomparesites where
userdatadetailid=' + user_datadetailid
set sql += ' and bpoverlap>=' + bp_overlap
set sql += ' and kbid=' + kb_id
if chr_<>'all' and isnull(chr_,'')<>''
set @sql += ' and chr_u=''' + chr_ +''''
if (centre_distance<>'')
set sql += ' and (centredistance<=' + centre_distance + ' or '
+ centre_distance + '=1) '
set sql += ' order by chr_u, start_u'
exec(sql)
end;
$BODY$
language plpgsql;
________________________________
From: Filip Rembiałkowski <[email protected]>
To: Rehan Saleem <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Tuesday, February 28, 2012 3:36 PM
Subject: Re: [SQL] How to convert SQL store procedure to Postgresql function
On Tue, Feb 28, 2012 at 9:50 AM, Rehan Saleem <[email protected]> wrote:
> hi ,
> how can i convert this sql store procedure to postgresql function , i shall
> be very thankful to you, as i am new to postgresql and i dont know how to
> handle this kind of store procedure in postgresql
Most people handle this with user-defined functions (UDF) written in
PL/PgSQL procedural language.
Try to read The Friendly Manual
http://www.postgresql.org/docs/current/static/sql-createfunction.html
http://www.postgresql.org/docs/current/static/plpgsql.html
Don't worry - all Transact-SQL constructs have their equivalent.
Just start rewriting your function and begin asking specific questions
here... People will help.
I would begin with
create or replace function sp_GetUserByID( in_UserId varchar(50), ...)
returns varchar(50)
language plpgsql as $$
declare
...
begin
...
return somevariable;
end;
$$;
HTH,
Filip
