如何在MySQL中使用RLIKE / REGEXP模式？
假设我们要在列值以2个元音字母开头的情况下进行记录。为此，下面是语法-
select *from yourTableName where yourColumnName RLIKE '^[aeiouAEIOU][aeiouAEIOU]';
让我们首先创建一个表-
mysql> create table DemoTable664(CityName varchar(100));
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable664 values('Springfield');
mysql> insert into DemoTable664 values('Austin');
mysql> insert into DemoTable664 values('Franklin');
mysql> insert into DemoTable664 values('OAKLAND');
mysql> insert into DemoTable664 values('Anchorage');使用select语句显示表中的所有记录-
mysql> select *from DemoTable664;
这将产生以下输出-
+-------------+ | CityName | +-------------+ | Springfield | | Austin | | Franklin | | OAKLAND | | Anchorage | +-------------+ 5 rows in set (0.00 sec)
这是使用RLIKE/REGEXP模式并每当列值以2个元音字母开头时显示记录的查询-
mysql> select *from DemoTable664 where CityName RLIKE '^[aeiouAEIOU][aeiouAEIOU]';
这将产生以下输出-
+----------+ | CityName | +----------+ | Austin | | OAKLAND | +----------+ 2 rows in set (0.00 sec)