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MySQL Cheatsheet: Master Queries Like a Pro!

MySQL is a must-have skill for managing and querying databases efficiently. Here's a quick cheatsheet to level up your database game!

• Basic Commands

CREATE DATABASE db_name; - Create a new database.

USE db_name; - Select a database to work on.

SHOW TABLES; - List all tables in the database.

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• Table Operations

CREATE TABLE table_name (column1 TYPE, column2 TYPE); - Create a table.

ALTER TABLE table_name ADD column_name TYPE; Add a new column.

DROP TABLE table_name; - Delete a table.

• CRUD Operations

INSERT INTO table_name (col1, col2) VALUES (val1, val2); - Add data.

SELECT * FROM table_name; - Fetch all data.

UPDATE table_name SET col1 = val WHERE condition; Update data.

DELETE FROM table_name WHERE condition; - Delete data.

• Query Filtering

WHERE - Filter rows: SELECT * FROM table WHERE col = 'value';

LIKE - Search: SELECT * FROM table WHERE col LIKE '%value%';

IN - Match multiple: SELECT * FROM table WHERE col IN ('val1', 'val2');
MySQL Cheatsheet: Master Queries Like a Pro!

• Sorting & Limiting

ORDER BY: SELECT * FROM table ORDER BY col ASC;

LIMIT: SELECT * FROM table LIMIT 10;

• Aggregations

COUNT: SELECT COUNT(*) FROM table;

SUM: SELECT SUM(col) FROM table;

GROUP BY: SELECT col, COUNT(*) FROM table GROUP BY col;

Indexes

CREATE INDEX idx_name ON table_name (col_name); - Speed up queries.

DROP INDEX idx_name ON table_name; - Remove index.

P.S. MySQL is the backbone of modern web apps. Master it step-by-step and become a database wizard!

Follow Suraj Dubey for more database tips and tricks.

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