匹配MySQL查询中数组的元素
让我们首先创建一个表table-
mysql> create table DemoTable1523 -> ( -> Id int, -> Value int -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1523 values(1,56); mysql> insert into DemoTable1523 values(2,78); mysql> insert into DemoTable1523 values(1,34); mysql> insert into DemoTable1523 values(2,45); mysql> insert into DemoTable1523 values(1,99);
使用select语句显示表中的所有记录-
mysql> select * from DemoTable1523;
这将产生以下输出-
+------+-------+ | Id | Value | +------+-------+ | 1 | 56 | | 2 | 78 | | 1 | 34 | | 2 | 45 | | 1 | 99 | +------+-------+ 5 rows in set (0.00 sec)
以下是匹配数组元素的查询。在这里，我们选择具有匹配值34、99和56的id-
mysql> select Id from DemoTable1523
-> where Value IN ('34','99','56')
-> group by Id
-> having count(*)=3;这将产生以下输出-
+------+ | Id | +------+ | 1 | +------+ 1 row in set (0.00 sec)