sql trigger example
-- SQL Server (update my_table after update on my_table)
CREATE TRIGGER trigger_name ON my_table AFTER UPDATE AS
IF UPDATE (col_name) -- Optional, for particular column
BEGIN
UPDATE my_table SET my_col_date = getdate() FROM my_table
END;
-- Oracle (insert into log table after update on my_table)
CREATE OR REPLACE TRIGGER trigger_name AFTER UPDATE ON my_table
FOR EACH ROW
BEGIN
INSERT INTO my_log_table (LOG_DATE, ACTION) VALUES (SYSDATE, 'Changed');
END;how use trigger in sql
CREATE TRIGGER Product_Details_tr
BEFORE INSERT ON Product_Details
FOR EACH ROW
SET NEW.User_ID = CURRENT_USER();Copyright © 2021 Codeinu
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