为此,请使用LIKE运算符。让我们首先创建一个表:
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Password varchar(100) );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable(Password) values('John@--123'); mysql> insert into DemoTable(Password) values('---Carol234'); mysql> insert into DemoTable(Password) values('--David987'); mysql> insert into DemoTable(Password) values('Mike----53443');
使用select语句显示表中的所有记录:
mysql> select *from DemoTable;
输出结果
+----+---------------+ | Id | Password | +----+---------------+ | 1 | John@--123 | | 2 | ---Carol234 | | 3 | --David987 | | 4 | Mike----53443 | +----+---------------+ 4 rows in set (0.00 sec)
以下是从MySQL中检索的查询(如果该查询仅包含两个连字符)-
mysql> select *from DemoTable where Password like '%--%' and password not like '%---%';
输出结果
+----+------------+ | Id | Password | +----+------------+ | 1 | John@--123 | | 3 | --David987 | +----+------------+ 2 rows in set (0.06 sec)