使用AND运算符执行MySQL更新
让我们首先创建一个表-
mysql> create table DemoTable613 (Id int,Age int,isMarried tinyint(1));
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable613 values(100,29,0); mysql> insert into DemoTable613 values(200,22,0); mysql> insert into DemoTable613 values(300,30,1);
使用select语句显示表中的所有记录-
mysql> select *from DemoTable613;
这将产生以下输出-
+------+------+-----------+ | Id | Age | isMarried | +------+------+-----------+ | 100 | 29 | 0 | | 200 | 22 | 0 | | 300 | 30 | 1 | +------+------+-----------+ 3 rows in set (0.00 sec)
以下是使用AND运算符执行MySQL更新的查询-
mysql> update DemoTable613 set isMarried=(Age=29 AND (Id=100)); Rows matched: 3 Changed: 2 Warnings: 0
让我们再次检查表记录-
mysql> select *from DemoTable613;
这将产生以下输出-
+------+------+-----------+ | Id | Age | isMarried | +------+------+-----------+ | 100 | 29 | 1 | | 200 | 22 | 0 | | 300 | 30 | 0 | +------+------+-----------+ 3 rows in set (0.00 sec)