buscador en postgres

[kitocnc]

CREATE OR REPLACE FUNCTION USP_Buscador(op integer, Cad1 varchar(100),Cad2 varchar(100),Cad3 varchar(100),Cad4 varchar(150))

RETURNS void AS -- asi tenes que poner si queres que no devuelva nada
$BODY$
DECLARE consultar varchar(500);
BEGIN
case op
when 1 then
SET @consultar=CONCAT('SELECT * FROM ',Cad1,' WHERE Estado=0 AND ',Cad2,' ILIKE \'%',Cad3,'%\' LIMIT 200');

end case;
PREPARE consultar FROM @consultar;
EXECUTE consultar;
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100
ROWS 1000;
ALTER FUNCTION USP_Buscador(integer, varchar(100), varchar(100), varchar(100), varchar(150)) OWNER TO postgres;