如何在 MySQL 中查找和替换带有文件路径的列?
mysqlmysqli database
为此，请使用 MySQL REPLACE()。让我们首先创建一个表 −
mysql> create table DemoTable ( FolderLocation text ); Query OK, 0 rows affected (0.80 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable values('C/ProgramFiles/AllMySQLProgram');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values('C/ProgramFiles/JavaChatApplication');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('C/ProgramFiles/Main/Image.png');
Query OK, 1 row affected (0.18 sec)
使用 select 语句显示表中的所有记录 −
mysql> select *from DemoTable;
这将产生以下输出 −
+------------------------------------+ | FolderLocation | +------------------------------------+ | C/ProgramFiles/AllMySQLProgram | | C/ProgramFiles/JavaChatApplication | | C/ProgramFiles/Main/Image.png | +------------------------------------+ 3 rows in set (0.00 sec)
以下是在 MySQL 中执行查找和替换的查询 −
mysql> update DemoTable set FolderLocation=replace(FolderLocation,'C/ProgramFiles','E/MyFolder/Details'); Query OK, 3 rows affected (0.14 sec) Rows matched: 3 Changed : 3 Warnings : 0
让我们再次检查表记录 −
mysql> select *from DemoTable;
这将产生以下输出 −
+----------------------------------------+ | FolderLocation | +----------------------------------------+ | E/MyFolder/Details/AllMySQLProgram | | E/MyFolder/Details/JavaChatApplication | | E/MyFolder/Details/Main/Image.png | +----------------------------------------+ 3 rows in set (0.00 sec)
