mysql 保留的关键字
mysql> select precision from Product; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'precision from Product' at line 1 mysql> select `precision` from Product limit 5; +-----------+ | precision | +-----------+ | 2 | | 2 | | 2 | | 2 | | 2 | +-----------+ 5 rows in set (0.00 sec)