如何在 MySQL 中查找并替换带文件路径的列?
为此,使用 MySQL REPLACE()。我们首先创建一个表格−
mysql> create table DemoTable ( FolderLocation text ); Query OK, 0 rows affected (0.80 sec)
使用 insert 命令在该表格中插入一些记录 -
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 语句显示表格中的所有记录 -
mysql> select *from DemoTable;
这将生成以下输出 -
+------------------------------------+ | FolderLocation | +------------------------------------+ | C/ProgramFiles/AllMySQLProgram | | C/ProgramFiles/JavaChatApplication | | C/ProgramFiles/Main/Image.png | +------------------------------------+ 3 rows in set (0.00 sec)
以下是执行 MySQL 查找并替换的查询 -
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
让我们再次检查表格记录 -
mysql> select *from DemoTable;
这将生成以下输出 -
+----------------------------------------+ | FolderLocation | +----------------------------------------+ | E/MyFolder/Details/AllMySQLProgram | | E/MyFolder/Details/JavaChatApplication | | E/MyFolder/Details/Main/Image.png | +----------------------------------------+ 3 rows in set (0.00 sec)
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