docs: Add commands for MySQL

docs/sql/MySQL.md

@@ -27,4 +27,80 @@ web technologies like PHP and frameworks such as Spring Boot for backend develop
     - Create user: `CREATE USER 'username'@'host' IDENTIFED BY 'password';`
     - Grant Privileges: `GRANT ALL PRIVILEGES ON database_name TO 'username'@'host';`
     - Revoke Privileges: `REVOKE ALL PRIVIKEGES ON database_name FROM 'username'@'host';`
-    - Flush Privileges (apply changes): `FLUSH PRIVILEGES;`
+    - Flush Privileges (apply changes): `FLUSH PRIVILEGES;`
+
+4. Table Operations:
+   - Create Table:
+      ```sql
+         CREATE TABLE users(
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            name VARCHAR(40),
+            email VARCHAR(40) UNIQUE
+         );
+     ```
+   - Drop Table:
+      ```DROP TABLE users;```
+   - Rename a Table:
+      ```RENAME TABLE old_table TO new_table;```
+   - Add a Column:
+      ```ALTER TABLE users ADD COLUMN age INT;```
+   - Drop a Column:
+      ```ALTER TABLE DROP COLUMN age;```
+
+5. Query Operations:
+   - Insert the Data:
+      ```INSERT INTO users (name, email) VALUES ('John Doe', 'john@example.com');```
+   - Select Data:
+      ``` SELECT * FROM users;```
+   - Update a Data:
+      ```UPDATE users SET name = 'Jane Doe' WHERE id = 1;```
+   - Delete a Data:
+      ```DELETE FROM users WHERE id = 1;```
+
+6. Filtering and Sorting: 
+   - Filter rows:
+      ```SELECT * FROM users WHERE age > 25;```
+   - Sort Rows:
+      ```SELECT * FROM users ORDER BY names ASC;```
+   - Limit Rows:
+      ```SELECT * FROM users LIMIT 10 OFFSET 5;```
+
+7. Aggregation and Grouping:
+   - Count Rows: 
+      ```SELECT COUNT(*) FROM users;```
+   - Group Data:
+      ```SELECT age, COUNT(*) FROM uses GROUP BY age;```
+   - Find Maximum and Minimum:
+     ```SELECT MAX(age), MIN(age) FROM users;```
+
+8. Index Management:
+   - Create an Index:
+      ```CREATE INDEX idx_name ON users(name);```
+   - Drop an Index:
+      ```DROP INDEX idx_name ON users;```
+
+9. Transaction Management:
+   - Begin Transaction:
+      ```START TRANSACTION;```
+   - Commit Transaction:
+      ```COMMIT;```
+   - Rollback Transaction:
+     ```ROLLBACK;```
+
+10. Miscellaneous Commands
+    - Show Current user:
+       ``` SELECT USER();```
+    - Show Current Database:
+       ``` SELECT DATABASE();```
+    - Show Server Version:
+       ```SELECT VERSION();```
+    - Show Running process:
+       ```SHOW PROCESSLIST;```
+    - Kill a Process:
+       ```KILL PROCESS_ID;```
+
+11. Import and Export Data
+   - Import Data:
+      ``` mysql -u username -p database_name < dumpfile.sql ```
+   - Export Data:
+      ``` mysqldump -u username -p database_name > dumpfile.sql ```