你是否可以在MySQL的SELECT语句中允许正则表达式匹配？

是的，我们可以在SELECT语句中进行正则表达式匹配 –

select yourColumnName from yourTableName where yourColumnName regexp '^yourValue';

首先让我们创建一个表 –

mysql> create table DemoTable1892
   (
   FirstName varchar(20)
   );
Query OK, 0 rows affected (0.00 sec)

使用INSERT命令将一些记录插入表中 –

mysql> insert into DemoTable1892 values('John');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1892 values('Adam');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1892 values('Jace');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1892 values('Johny');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1892 values('Johnson');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1892 values('Jack');
Query OK, 1 row affected (0.00 sec)

使用SELECT语句显示表中的所有记录 –

mysql> select * from DemoTable1892;

这将产生以下输出 –

+-----------+
| FirstName |
+-----------+
| John      |
| Adam      |
| Jace      |
| Johny     |
| Johnson   |
| Jack      |
+-----------+
6 rows in set (0.00 sec)

以下是MySQL SELECT语句中进行正则表达式匹配的查询 –

mysql> select FirstName from DemoTable1892 where FirstName regexp '^Jo';

这将产生以下输出 –

+-----------+
| FirstName |
+-----------+
| John      |
| Johny     |
| Johnson   |
+-----------+
3 rows in set (0.00 sec)

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