CREATE trigger SQL
-- Oracle DB Syntax
CREATE OR REPLACE TRIGGER {trigger_name}
BEFORE | AFTER
INSERT | UPDATE | DELETE
ON {table_name}
(FOR EACH ROW)
{operation to be executed}
-- for example
CREATE TRIGGER log_updates
AFTER INSERT OR UPDATE ON Person
FOR EACH ROW
INSERT INTO LogPerson(ts, IdPerson, surname)
VALUES(CURRENT_TIMESTAMP, NEW.id, NEW.surname);T-SQL Create Trigger
CREATE TRIGGER production.trg_product_audit
ON production.products
AFTER INSERT, DELETE
AS
BEGIN
SET NOCOUNT ON;
INSERT INTO production.product_audits(
product_id,
product_name,
brand_id,
category_id,
model_year,
list_price,
updated_at,
operation
)
SELECT
i.product_id,
product_name,
brand_id,
category_id,
model_year,
i.list_price,
GETDATE(),
'INS'
FROM
inserted i
UNION ALL
SELECT
d.product_id,
product_name,
brand_id,
category_id,
model_year,
d.list_price,
GETDATE(),
'DEL'
FROM
deleted d;
END
Code language: SQL (Structured Query Language) (sql)Copyright © 2021 Codeinu
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