Oracle 觸發器中NEW和OLD關修飾詞說明

觸發器中OLD 和 NEW修飾詞，old 表明變動前記錄，new表明變動後的記錄。sql CREATE OR REPLACE TRIGGER derive_commission_pct BEFORE INSERT OR UPDATE OF salary ON employees FOR EACH ROW WHEN (NEW.job_id = 'SA_REP') BEGIN IF INSER

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