Extracting filenames from a path in MySQL?

To extract filenames from a path MySQL, you can use SUBSTRING_INDEX(). The syntax is as follows −

SELECT SUBSTRING_INDEX(ypurColumnName, '\\', -1) as anyAliasName FROM yourTableName;

To understand the above syntax, let us create a table. The query to create a table is as follows −

mysql> create table ExtractFileNameDemo
   -> (
   -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> AllProgrammingFilePath varchar(100)
   -> );
Query OK, 0 rows affected (0.50 sec)

Now you can insert some records in the table using insert command. The query is as follows −

mysql> insert into ExtractFileNameDemo(AllProgrammingFilePath) values('C:\\Users\\John\\AddTwoNumberProgram.java');
Query OK, 1 row affected (0.13 sec)
mysql> insert into ExtractFileNameDemo(AllProgrammingFilePath) values('E:\\CProgram\\MasterMindGame.c');
Query OK, 1 row affected (0.23 sec)
mysql> insert into ExtractFileNameDemo(AllProgrammingFilePath) values('F:\\WebApplication\\WebApp.php');
Query OK, 1 row affected (0.19 sec)
mysql> insert into ExtractFileNameDemo(AllProgrammingFilePath) values('C:\\Users\\John\\Desktop\\AllMySQLScript.sql');
Query OK, 1 row affected (0.15 sec)

Display all records from the table using a select statement. The query is as follows −

mysql> select *from ExtractFileNameDemo;

The following is the output −

+----+------------------------------------------+
| Id | AllProgrammingFilePath                   |
+----+------------------------------------------+
|  1 | C:\Users\John\AddTwoNumberProgram.java   |
|  2 | E:\CProgram\MasterMindGame.c             |
|  3 | F:\WebApplication\WebApp.php             |
|  4 | C:\Users\John\Desktop\AllMySQLScript.sql |
+----+------------------------------------------+
4 rows in set (0.00 sec)

Here is the query to extract file names from a path in MySQL −

mysql> select SUBSTRING_INDEX(AllProgrammingFilePath, '\\', -1) as AllFileName from ExtractFileNameDemo;

The following is the output −

+--------------------------+
| AllFileName              |
+--------------------------+
| AddTwoNumberProgram.java |
| MasterMindGame.c         |
| WebApp.php               |
| AllMySQLScript.sql       |
+--------------------------+
4 rows in set (0.00 sec)