为此，请使用FIND_IN_SET()。让我们首先创建一个表-mysql> create table DemoTable1866
(
Value1 int,
ListOfValues varchar(100)
);
使用插入命令在表中插入一些记录-mysql> insert into DemoTable1866 values(56,'78,56,98,95');
mysql> insert into DemoTable1866 values(103,'103,90,102,104');
mysql> insert into DemoTable1866 values(77,'34,45,77,78');
使用select语句显示表中的所有记录-mysql> select * from DemoTable1866;
这将产生以下输出-+--------+----------------+
| Value1 | ListOfValues |
+--------+----------------+
| 56 | 78,56,98,95 |
| 103 | 103,90,102,104 |
| 77 | 34,45,77,78 |
+--------+----------------+
3 rows in set (0.00 sec)
这是获取字符串在另一列中的位置的查询-mysql> select Value1,ListOfValues,find_in_set(Value1,ListOfValues) as Output from DemoTable1866;
这将产生以下输出-+--------+----------------+--------+
| Value1 | ListOfValues | Output |
+--------+----------------+--------+
| 56 | 78,56,98,95 | 2 |
| 103 | 103,90,102,104 | 1 |
| 77 | 34,45,77,78 | 3 |
+--------+----------------+--------+
3 rows in set (0.00 sec)