您可以在MySQL Select语句中允许正则表达式匹配吗？
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';
让我们首先创建一个表-
mysql> create table DemoTable1892 ( FirstName varchar(20) );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1892 values('John');
mysql> insert into DemoTable1892 values('Adam');
mysql> insert into DemoTable1892 values('Jace');
mysql> insert into DemoTable1892 values('Johny');
mysql> insert into DemoTable1892 values('Johnson');
mysql> insert into DemoTable1892 values('Jack');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)
这是MySQLselect语句中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)