mirror of https://github.com/pressly/goose.git
21 lines
717 B
PL/PgSQL
21 lines
717 B
PL/PgSQL
CREATE FUNCTION emp_stamp() RETURNS trigger AS $emp_stamp$
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BEGIN
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-- Check that empname and salary are given
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IF NEW.empname IS NULL THEN
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RAISE EXCEPTION 'empname cannot be null';
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END IF;
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IF NEW.salary IS NULL THEN
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RAISE EXCEPTION '% cannot have null salary', NEW.empname;
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END IF;
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-- Who works for us when they must pay for it?
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IF NEW.salary < 0 THEN
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RAISE EXCEPTION '% cannot have a negative salary', NEW.empname;
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END IF;
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-- Remember who changed the payroll when
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NEW.last_date := current_timestamp;
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NEW.last_user := current_user;
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RETURN NEW;
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END;
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$emp_stamp$ LANGUAGE plpgsql; |