MySQL查询从一列中获取字符串，并用逗号分隔的值在另一列中找到其位置？
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)