关于查询的一个有关问题
关于查询的一个问题
某表记录是这样的
id title cid
100 张三 2,3
101 李四 3,4
102 王五 12,13
如果搜索,条件是要查cid字段=2的记录
应该怎么写?
sql语句里的like应该不严谨,可能会把100和102这两条记录都查出来
------解决方案--------------------
- SQL code
SELECT * FROM table WHERE FIND_IN_SET('2',cid); <br><font color="#e78608">------解决方案--------------------</font><br> mysql> select find_in_set(2, "2,3,4");<br>+-------------------------+<br>| find_in_set(2, "2,3,4") |<br>+-------------------------+<br>| 1 |<br>+-------------------------+<br>1 row in set (0.00 sec)<br><br>mysql> select find_in_set(2, "52,3,4");<br>+--------------------------+<br>| find_in_set(2, "52,3,4") |<br>+--------------------------+<br>| 0 |<br>+--------------------------+<br>1 row in set (0.00 sec)<br><br>mysql> select find_in_set(2, "2,3,4"); <br>+-------------------------+<br>| find_in_set(2, "2,3,4") |<br>+-------------------------+<br>| 1 |<br>+-------------------------+<br>1 row in set (0.00 sec) <div class="clear"> </div>

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