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How to get left substring in MySQL from a column with file path? Display the entire file path string excluding the file name?
To get the left substring, use LEFT() along with substring_index(). For example, let’s say the file path is −
“/MyFile/JavaProgram/Hello.java “
Here, we will see how to display the entire file path except for the file name i.e. −
/MyFile/JavaProgram/
Let us first create a table −
mysql> create table DemoTable ( FileLocation text ); Query OK, 0 rows affected (0.57 sec
Insert some records in the table using insert command −
mysql> insert into DemoTable values('/MyFile/JavaProgram/Hello.java');
Query OK, 1 row affected (0.27 sec)
mysql> insert into DemoTable values('/C/AllPrograms/animation.gif');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('/E/FavFile/ChatProgram.java');
Query OK, 1 row affected (0.18 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+--------------------------------+ | FileLocation | +--------------------------------+ | /MyFile/JavaProgram/Hello.java | | /C/AllPrograms/animation.gif | | /E/FavFile/ChatProgram.java | +--------------------------------+ 3 rows in set (0.00 sec)
Following is the query to get left substring in MySQL −
mysql> select left(FileLocation,char_length(FileLocation)-char_length(substring_index(FileLocation,'/',-1))) from DemoTable;
This will produce the following output −
+------------------------------------------------------------------------------------------------+ | left(FileLocation,char_length(FileLocation)-char_length(substring_index(FileLocation,'/',-1))) | +------------------------------------------------------------------------------------------------+ | /MyFile/JavaProgram/ | | /C/AllPrograms/ | | /E/FavFile/ | +------------------------------------------------------------------------------------------------+ 3 rows in set (0.00 sec)
Updated on: 30-Sep-2019
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