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Legal Studies如何在 MySQL REGEXP 子句中转义括号，仅显示特定值的括号？
让我们先创建一个表 −
mysql> create table DemoTable1908 ( Code text ); Query OK, 0 rows affected (0.00 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable1908 values('MySQL(1)Database');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1908 values('MongoDB 2 Database');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1908 values('MySQL(3)Database');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1908 values('SQL Server(10)Database');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1908 values('MySQL 8 Database');
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 DemoTable1908;
这将生成以下输出 −
+------------------------+ | Code | +------------------------+ | MySQL(1)Database | | MongoDB 2 Database | | MySQL(3)Database | | SQL Server(10)Database | | MySQL 8 Database | +------------------------+ 5 rows in set (0.00 sec)
以下是如何在 REGEXP 子句中转义括号，仅显示带有 () 的括号值 −
mysql> select * from DemoTable1908 where Code regexp '^MySQL[(][0-9][)]Database';
这将生成以下输出 −
+------------------+ | Code | +------------------+ | MySQL(1)Database | | MySQL(3)Database | +------------------+ 2 rows in set (0.00 sec)
更新于： 2019 年 12 月 30 日
727 次观看
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