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SQL> MERGE INTO products p
2 USING newproducts np
3 ON (p.product_id = np.product_id)
4 WHEN MATCHED THEN
5 UPDATE
6 SET p.product_name = np.product_name,
7 p.category = np.category
8 WHERE p.category = 'DVD'
9 WHEN NOT MATCHED THEN
10 INSERT
11 VALUES (np.product_id, np.product_name, np.category)
12 WHERE np.category != 'BOOKS'
SQL> /