Mysql Loader Examples

Mysql Loader Example is used to create the backup of data  file and then import the data text file into Mysql database. 

Understand with Example

The Tutorial illustrate an example from 'Mysql Loader Examples'.To grasp this example we create a table 'employee1' with required fieldnames and datatypes.

Query to Create Table named employee1:

mysql>CREATE TABLE employee1 (              
         ->    Empid int(10),         
         ->    Empname varchar(60),   
         ->    date date 
         ->  );

Query to insert data into Table named employee1:

The Query insert into is used to add the records or rows to the table 'employee1'.

mysql>insert into employee1 values(01,'Girish','2008-12-20');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(02,'Komal','2008-12-21');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(03,'vineet','2008-12-21');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(04,'Amit','2008-12-20');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(02,'Komal','2008-12-23');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(02,'Sandeep','2008-12-24');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(02,'suman','2008-12-25');
Query OK, 1 row affected (0.02 sec)
mysql>insert into employee1 values(01,'AAA',' 2008-12-03');
Query OK, 1 row affected (0.02 sec)

 Query to view data of  Table named employee1:

mysql> select * from employee1;
+-------+---------+------------+
| Empid | Name    | DOB        |
+-------+---------+------------+
| 1     | Girish  | 2008-12-20 |
| 2     | Komal   | 2008-12-21 |
| 3     | vineet  | 2008-12-21 |
| 4     | Amit    | 2008-12-20 |
| 2     | Komal   | 2008-12-23 |
| 2     | Sandeep | 2008-12-24 |
| 2     | suman   | 2008-12-25 |
| 1     | AAA     | 2008-12-03 |
+-------+---------+------------+
8 rows in set (0.00 sec)

Query to create backup file of Table named employee1:

The Query is used to import the table 'employee1' into a text file 'employee.txt'.The 'employee.txt' functions as a backup file.

mysql> select * into outfile 'C:/Documents and Settings/Administrator/Desktop/employee.txt'
    -> fields terminated by '\t'
    -> lines terminated by '\n'
    -> from employee1;
Query OK, 8 rows affected (0.01 sec)

Output :-

1	Girish	2008-12-20
2	Komal	2008-12-21
3	vineet	2008-12-21
4	Amit	2008-12-20
2	Komal	2008-12-23
2	Sandeep	2008-12-24
2	suman	2008-12-25
1	AAA	2008-12-03

Query to create table in which the data of the above file(employee.txt) is loaded:

Now we create the table 'Loaded Employee' in which the data of the backup file 'employee.txt' is imported.

mysql> CREATE TABLE LoadedEmployee (
    ->              Empid int(10),
    ->              Empname varchar(60),
    ->              date date
    ->           );
Query OK, 0 rows affected (0.03 sec)

Query to load data from backup file created above of Table named employee1:

The Query given below is used to load the backup created file into table 'Loaded Employee' in Mysql database.

mysql> LOAD DATA INFILE 'C:/Documents and Settings/Administrator/Desktop/employee.txt'
    -> INTO TABLE LoadedEmployee
    -> FIELDS TERMINATED BY '\t'
    -> LINES TERMINATED BY '\n';
Query OK, 8 rows affected (0.05 sec)
Records: 8  Deleted: 0  Skipped: 0  Warnings: 0

Query to show data loaded in table loadedEmployee:

mysql> select * from loadedEmployee;
+-------+---------+------------+
| Empid | Empname | date       |
+-------+---------+------------+
|     1 | Girish  | 2008-12-20 |
|     2 | Komal   | 2008-12-21 |
|     3 | vineet  | 2008-12-21 |
|     4 | Amit    | 2008-12-20 |
|     2 | Komal   | 2008-12-23 |
|     2 | Sandeep | 2008-12-24 |
|     2 | suman   | 2008-12-25 |
|     1 | AAA     | 2008-12-03 |
+-------+---------+------------+
8 rows in set (0.00 sec)