MySQL IN和NOT IN关键字

mysql> select * from student;
+------+------+-----------+
| age  | name | address   |
+------+------+-----------+
|   12 | Jack | BeiJing   |
|   19 | Mike | TianJin   |
|   21 | Rose | ZhuHai    |
|   23 | Ann  | ShangHai  |
|   27 | Alis | ShenZhen  |
|   55 | Make | GuangZhou |
+------+------+-----------+
6 rows in set (0.00 sec)

mysql>

# in表示在集合中查找

mysql> select * from student where age in(19, 20, 23);
+------+------+----------+
| age  | name | address  |
+------+------+----------+
|   19 | Mike | TianJin  |
|   23 | Ann  | ShangHai |
+------+------+----------+
2 rows in set (0.08 sec)

# not in表示不在集合中
mysql> select * from student where age not in(19, 20, 23);
+------+------+-----------+
| age  | name | address   |
+------+------+-----------+
|   12 | Jack | BeiJing   |
|   21 | Rose | ZhuHai    |
|   27 | Alis | ShenZhen  |
|   55 | Make | GuangZhou |
+------+------+-----------+
4 rows in set (0.00 sec)

mysql>