. where qty>2; Query OK, 0 rows affected (0.02 sec) mysql> select * from t1; + + + | qty | value | + + + | 3 | 50 | | 5 | 60 | + + + 2 rows in set (0.01 sec) mysql> _ 18. khoa Hà Nội Ví dụ (MySQL) mysql> select * from t; + + + | qty | price | + + + | 3 | 50 | | 5 | 60 | | 2 | 20 | + + + 3 rows in set (0.00 sec) mysql> create view t1 as select qty,. EE4253, EE6133 – HK1 2013/2014 TS. Đào Trung Kiên – ĐH Bách khoa Hà Nội Chuẩn hoá dữ liệu (data normalization) 2 EE4509, EE4253, EE6133 – HK1 2013/2014 TS. Đào Trung Kiên – ĐH Bách khoa