https://github.com/h1dd3nsn1p3r/db-query

👌 Useful mySql commands.
https://github.com/h1dd3nsn1p3r/db-query

database mariadb mysql

Last synced: 2 months ago
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👌 Useful mySql commands.

• Host: GitHub
• URL: https://github.com/h1dd3nsn1p3r/db-query
• Owner: h1dd3nsn1p3r
• License: mit
• Created: 2022-09-01T04:35:53.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2022-11-07T05:42:35.000Z (over 3 years ago)
• Last Synced: 2025-06-30T22:05:46.172Z (about 1 year ago)
• Topics: database, mariadb, mysql
• Homepage:
• Size: 7.81 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.MD
  • License: LICENSE

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README

          
#### ✅ CREATE

    CREATE TABLE `Class_C` (

    `id` int(11) NOT NULL AUTO_INCREMENT,

    `name` varchar(255) NOT NULL,

    `age` int(10) NOT NULL,

    PRIMARY KEY (`id`)

    );

#### ✅ INSERT

    INSERT INTO `Class_C` (`name`, `age`) VALUES ('Anuj Subedi', 29);

  

#### ✅ SELECT

    SELECT * FROM `Class_C`;

    

    SELECT * FROM `Class_C` WHERE `id` = 1;

#### ✅ DELETE

    DELETE FROM `Class_C` WHERE `id` = 1;

    

    DELETE FROM `Class_C` WHERE `name` = 'Anuj Subedi';

#### ✅ UPDATE

    UPDATE `Class_C` SET name='John' WHERE id=2;

  

#### ✅ ALTER

    ALTER TABLE `Class_C` ADD `address` VARCHAR(255) NOT NULL AFTER `age`;

    

    ALTER TABLE `Class_C` DROP `address`;

    

    ALTER TABLE `Class_C` CHANGE `name`  `Fname` VARCHAR(255) NOT NULL;

    

    ALTER TABLE `Class_C` MODIFY `name` VARCHAR(255) NOT NULL;

    

    ALTER TABLE `Class_C` RENAME TO `Class_D`;

#### ✅ DROP

    DROP TABLE `Class_C`;

    

    DROP TABLE IF EXISTS `Class_C`;

  

#### ✅ TRUNCATE

    TRUNCATE TABLE `Class_C`;

#### ✅ IMPORT DATABASE

    mysqldump -uUSERNAME -p DATABASE_NAME > backup.sql

#### ✅ EXPORT DATABASE

    mysql -uUSERNAME -p DATABASE_NAME < backup.sql