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Legal Studies如何在 MySQL REGEXP 子句中轉義括號，僅顯示特定值的括號？
讓我們先建立一個表 −
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記錄 −
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 語句顯示錶中的所有記錄 −
mysql> select * from DemoTable1908;
這將生成以下輸出 −
+------------------------+ | 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 子句中轉義括號，僅顯示帶有 () 的括號值 −
mysql> select * from DemoTable1908 where Code regexp '^MySQL[(][0-9][)]Database';
這將生成以下輸出 −
+------------------+ | Code | +------------------+ | MySQL(1)Database | | MySQL(3)Database | +------------------+ 2 rows in set (0.00 sec)
更新於： 2019 年 12 月 30 日
727 次觀看
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