留空
我们选择的 数据库
mysql> select database();
+------------+
| database() |
+------------+
| test1 |
+------------+
1 row in set (0.00 sec)
mysql> show tables
-> ;
+-----------------+
| Tables_in_test1 |
+-----------------+
| tt |
+-----------------+
1 row in set (0.00 sec)
mysql> select * from tt;
具有优先级
mysql> select high_priority * from tt;
low_priority 低优先级写
mysql> insert low_priority into tt values(1,'a');
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