RE : Re: Asking for some PL/pgSQL Tips

Hello,

I have tried to generate my dynamic query storeing the sql statement in a
variable, but still doesn't work...

I don't know what's the matter with it, but when I call the function:

Select alterTable(20362, 'new_col', 'integer');

It gives me the following mssg:

ERROR: parser: parse error at or near "execute"

I wonder if anyone can have a look at it and tell me what's wrong with it.
thankyou in advance.

Stay Safe & Happy
:* TankGirl

P.S. The function:

CREATE FUNCTION recorrerAnchura(oid, TEXT, TEXT) RETURNS integer AS '
DECLARE
-- Alias for the parameters
nomb_atrib ALIAS FOR $2;
nomb_tipo ALIAS FOR $3;

tuplas RECORD;
tabla_origen text;

-- Variable in charge of the dinamic query
exec_sql varchar(4000);

BEGIN

-- I check if the oid belongs to a table
tabla_origen := oidToText($1);
IF tabla_origen = NULL THEN
RAISE EXCEPTION '' The oid % doesn't belong to any table!!!'', $1;
ELSE
-- I check if the table is inherited
SELECT INTO tuplas * FROM pg_inherits WHERE inhparent = $1;
IF NOT FOUND THEN
-- This is the dynamic query I want to generate
exec_sql := '' ALTER TABLE ''''''''''
|| tabla_origen
|| '''''''''' ADD COLUMN ''''''''''
|| nomb_atrib ||'''''''''' ''''''''''
|| nomb_tipo ||'''''''''';'';

END IF;
END IF;

RAISE NOTICE '' %'', exec_sql;
EXECUTE exec_sql;

RETURN 0;
END;
' LANGUAGE 'plpgsql';

On Tue Jul 31 20:15:22 CEST 2001
Richard Huxton (dev(at)archonet(dot)com) wrote :

tankgirl(at)worldonline(dot)es wrote:

> This is more or less what I'm trying to do...
>
> EXECUTE ''ALTER TABLE ''||name_table
> || '' ADD COLUMN '' || name_atrib || name_type;

Stick the text of this into a variable (say execsql) then you can do:

RAISE NOTICE execsql;
EXECUTE execsql;

Once I've got my patch to RAISE finished and accepted you won't need to
put it into a variable, but for the moment you have to.

My guess is you are missing a space between name_atrib and name_type,
but that's just a guess.

HTH

- Richard Huxton