On 20 April 2016 at 10:38, David G. Johnston <david.g.johnston@xxxxxxxxx> wrote:
Hi all,I've got two tables:- users- companiesI'm trying to create a function that:
- if users.code is empty, it gives a default value
- And the increment_client_code in company should auto increment for the next client code
What I've done so far:DROP FUNCTION IF EXISTS client_code_increment_count();
CREATE OR REPLACE FUNCTION "public"."client_code_increment_count" () RETURNS TABLE("code" INT) AS
$BODY$
SELECT MAX(CAST(users.code AS INT)) FROM users WHERE users.code ~ '^\d+$' AND company_id = 2
$BODY$
LANGUAGE sql;
SELECT * FROM "client_code_increment_count"();The need to do "WHERE users.code ~ '^\d+$' means your model is poorly specified.CREATE OR REPLACE FUNCTION "public"."auto_generate_client_code_if_empty" () RETURNS "trigger"
VOLATILE
AS $dbvis$
BEGIN
END;
$dbvis$ LANGUAGE plpgsql;It would be nice if you actually showed some work here...
CREATE TRIGGER "increment_client_code"
BEFORE INSERT OR UPDATE ON users
FOR EACH ROW
EXECUTE PROCEDURE "auto_generate_client_code_if_empty"();I'd question the need to execute this trigger on UPDATE...But still can't do that works.. What Am I missing?The stuff that goes between "BEGIN" and "END" in auto_generate_client_code_if_empty...?
That's all I got David.. working on it and would like some help if possible...
Lucas
