From: Rehan Saleem <pk_rehan@yahoo.com>
To: Filip Rembiałkowski <plk.zuber@gmail.com>
Cc: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: Re: How to convert SQL store procedure to Postgresql function
Date: Tue, 28 Feb 2012 03:56:46 -0800 (PST)
Message-ID: <1330430206.16326.YahooMailNeo@web121606.mail.ne1.yahoo.com> (raw)
In-Reply-To: <CAP_rwwmWSh2o0hbatj+dFL1r612jg_B+oSf6qM02GtJM-dW24Q@mail.gmail.com>
References: <1330419004.47440.YahooMailNeo@web121602.mail.ne1.yahoo.com>
<CAP_rwwmWSh2o0hbatj+dFL1r612jg_B+oSf6qM02GtJM-dW24Q@mail.gmail.com>
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 <plk.zuber@gmail.com>
To: Rehan Saleem <pk_rehan@yahoo.com>
Cc: "pgsql-sql@postgresql.org" <pgsql-sql@postgresql.org>
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 <pk_rehan@yahoo.com> 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.htmlhttp://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
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To: pgsql-sql@postgresql.org
Cc: pk_rehan@yahoo.com, plk.zuber@gmail.com
Subject: Re: How to convert SQL store procedure to Postgresql function
In-Reply-To: <1330430206.16326.YahooMailNeo@web121606.mail.ne1.yahoo.com>
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