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MySQL query to replace a string after the last / in a column with directory links?
For this, use the substring_index() method. Let us first create a table −
mysql> create table DemoTable -> ( -> FolderName varchar(100), -> FolderLocation varchar(200) -> ); Query OK, 0 rows affected (1.03 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('CProgram','C:/AllPrograms/.....');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values('Images','E:/MyImage/home/garbage');
Query OK, 1 row affected (0.15 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
Output
+------------+-------------------------+ | FolderName | FolderLocation | +------------+-------------------------+ | CProgram | C:/AllPrograms/..... | | Images | E:/MyImage/home/garbage | +------------+-------------------------+ 2 rows in set (0.00 sec)
Here is the query to replace a string after the last / in a column with directory links −
mysql> UPDATE DemoTable SET FolderLocation = CONCAT(LEFT(FolderLocation , CHAR_LENGTH(FolderLocation ) - CHAR_LENGTH(SUBSTRING_INDEX(FolderLocation , '/', -1))),FolderName); Query OK, 2 rows affected (0.16 sec) Rows matched: 2 Changed: 2 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable;
Output
+------------+-------------------------+ | FolderName | FolderLocation | +------------+-------------------------+ | CProgram | C:/AllPrograms/CProgram | | Images | E:/MyImage/home/Images | +------------+-------------------------+ 2 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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