我有一个触发器,就像许多其他触发器一样,它们在更新后会触发并检查OLD
集的字段。
由于某种原因,此触发器引发此错误:
ERROR: record "old" has no field "status"
CONTEXT: SQL statement "SELECT NOT (OLD.status = NEW.status) AND NEW.status = 'Success'"
这是触发器的主体:
CREATE OR REPLACE FUNCTION tr_online_payment_after_update()
RETURNS trigger AS
$BODY$
DECLARE
v_rec RECORD;
BEGIN
-- If state changed to Success
IF NOT (OLD.status = NEW.status) AND NEW.status = 'Success' THEN
-- Find any invoices attached and set them to paid
FOR v_rec IN
SELECT invoice_id_fk
FROM online_payment_invoice
WHERE online_payment_id_fk = NEW.online_payment_id
LOOP
UPDATE invoice
SET paid_date = CURRENT_DATE,
updator_id_fk = -2,
updated = LOCALTIMESTAMP
WHERE invoice_id = v_rec.invoice_id_fk;
END LOOP;
END IF;
RETURN NULL;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
CREATE TRIGGER tr_online_payment_after_update
AFTER UPDATE
ON online_payment
FOR EACH ROW
EXECUTE PROCEDURE tr_online_payment_after_update();
奇怪的是,它实际上似乎在运行触发器的发票更新部分。
我看不到我在这里想念的东西。这没有道理。
这是完整的输出:
=>UPDATE online_payment SET status = 'Success' WHERE online_payment_id = 18;
ERROR: record "old" has no field "status"
CONTEXT: SQL statement "SELECT NOT (OLD.status = NEW.status) AND NEW.status = 'Success'"
PL/pgSQL function tr_online_payment_after_update() line 7 at IF
SQL statement "UPDATE load_unit
SET load_hinderance = load_hinderance(load_unit_id)
WHERE load_consign_match_id_fk = v_lcm_id"
PL/pgSQL function tr_invoice_after_update() line 50 at SQL statement
SQL statement "UPDATE invoice
SET paid_date = CURRENT_DATE,
updator_id_fk = -2,
updated = LOCALTIMESTAMP
WHERE invoice_id = v_rec.invoice_id_fk"
PL/pgSQL function tr_online_payment_after_update() line 14 at SQL statement
答案 0 :(得分:0)
在功能中添加以下诊断行:
RAISE NOTICE 'Called % % on %',
TG_WHEN, TG_OP, TG_TABLE_NAME;
然后运行调用触发器的SQL语句,并查看输出是否符合您的期望。