Writing MYSQL queries (SELECT, INSERT, UPDATE, DELETE)

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 MySQL queries for SELECT, INSERT, UPDATE, and DELETE operations.

SELECT Query:

Retrieve data from a database.

MYSQL code

SELECT column1, column2

FROM table_name

WHERE condition;

Example:

MYSQL code

SELECT first_name, last_name

FROM employees

WHERE department = 'IT';

INSERT Query:

Add new records to a database table.

MYSQL code

INSERT INTO table_name (column1, column2, column3)

VALUES (value1, value2, value3);

Example:

MYSQL code

INSERT INTO customers (first_name, last_name, email)

VALUES ('Amit', 'Kumar', 'test@gmail.com');

UPDATE Query:

Modify existing records in a database table.

MYSQL code

UPDATE table_name

SET column1 = value1, column2 = value2

WHERE condition;

Example:

MYSQL code

UPDATE products

SET price = 12.99

WHERE product_id = 12;

DELETE Query:

Remove records from a database table.

MYSQL code

DELETE FROM table_name

WHERE condition;

Example:

MYSQL code

DELETE FROM products

WHERE order_id = 15;

Please note that in real-world applications, you would replace table_name with the actual name of the table in your database and provide appropriate column names, values, and conditions. Also, always exercise caution when using DELETE and UPDATE queries to avoid unintended data loss or modification.

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