Tales From A Lazy Fat DBA

Today i will discuss about the the useful but script/SQL based data export/import method in MySQL database that is – LOAD DATA INFILE and INTO OUTFILE.

Lets first create an export file/script for the table using SELECT … INTO OUTFILE, here you can specify the location of the export file.

mysql> select * from country into outfile 'countrycreate.sql';
Query OK, 109 rows affected (0.00 sec)

-rw-rw-rw-. 1 mysql mysql 3.6K Dec 20 01:07 countrycreate.sql

As there is no table definition captured using SELECT INTO OUTFILE way, so you should always ensure that you have a copy of the table definition for restoration of the file.

bash-4.1$ mysqldump -u root -p --no-data dixit country > /var/lib/mysql/dixit/countryschemadef.sql
Enter password:

-rw-rw-rw-. 1 mysql mysql 3.6K Dec 20 01:07 countrycreate.sql
-rw-r--r--. 1 mysql mysql 1.6K Dec 20 01:10 countryschemadef.sql

Lets see the contents of this newly created file.

bash-4.1$ more countryschemadef.sql
-- MySQL dump 10.13  Distrib 5.7.20, for Linux (x86_64)
--
-- Host: localhost    Database: dixit
-- ------------------------------------------------------
-- Server version       5.7.20

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `country`
--

DROP TABLE IF EXISTS `country`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `country` (
  `country_id` int(11) DEFAULT NULL,
  `country` text,
  `last_update` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2017-12-20  1:10:20

Lets create the new user and load the table data to it.

bash-4.1$ mysqladmin -u root -p create dixit2
Enter password:


bash-4.1$ mysql -u root -p dixit2  load data infile '/var/lib/mysql/dixit/countrycreate.sql' into table country;
Query OK, 109 rows affected (0.01 sec)
Records: 109  Deleted: 0  Skipped: 0  Warnings: 0

mysql>
mysql>
mysql> select count(*) from country;
+----------+
| count(*) |
+----------+
|      109 |
+----------+
1 row in set (0.00 sec)

All set!

Hope It Helps!
Prashant Dixit