To export specific column data in MySQL, use OUTFILE −
select yourColumnName from yourTableName into outfile 'yourLocationOfFile’;
Let us first create a table −
mysql> create table DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentFirstName varchar(20), StudentLastName varchar(20) ); Query OK, 0 rows affected (0.54 sec)
Insert records in the table using insert command −
mysql> insert into DemoTable(StudentFirstName,StudentLastName) values('John','Doe'); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable(StudentFirstName,StudentLastName) values('David','Miller'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable(StudentFirstName,StudentLastName) values('John','Smith'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(StudentFirstName,StudentLastName) values('Carol','Taylor'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(StudentFirstName,StudentLastName) values('Sam','Williams'); Query OK, 1 row affected (0.18 sec)
Display records from the table using select command −
mysql> select *from DemoTable;
This will produce the following output −
+-----------+------------------+-----------------+ | StudentId | StudentFirstName | StudentLastName | +-----------+------------------+-----------------+ | 1 | John | Doe | | 2 | David | Miller | | 3 | John | Smith | | 4 | Carol | Taylor | | 5 | Sam | Williams | +-----------+------------------+-----------------+ 5 rows in set (0.00 sec)
Following is the query to export specific column data in MySQL −
mysql> select StudentLastName from DemoTable into outfile 'E:\StudentLastName.txt'; Query OK, 5 rows affected (0.00 sec)
The file location is ‘E:\StudentLastName.txt’. The screenshot of file and contents are as follows. We have successfully export column data to the file −