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DML

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DELETE Statement

Deleting Data from MySQL Tables

DELETE with WHEREDELETE FROM employees WHERE id = 2;Delete All RowsDELETE FROM employees;Use with caution — consider usi...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
DML

DML

What is DML?DML stands for Data Manipulation Language. It allows users to manage data within schema objects. It includes...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
INSERT

INSERT

INSERT StatementUsed to add new rows to a table.INSERT INTO employees (employee_id, first_name, salary) VALUES (101, 'Jo...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
UPDATE

UPDATE

UPDATE StatementUsed to change existing data in one or more rows.UPDATE employees SET salary = salary + 1000 WHERE depar...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
DELETE

DELETE

DELETE StatementRemoves one or more rows from a table.DELETE FROM employees WHERE department_id = 30;If you omit the WHE...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
MERGE

MERGE

MERGE StatementAlso known as an 'upsert' operation — it updates if a match is found or inserts if not.MERGE INTO employe...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
TRUNCATE

TRUNCATE

TRUNCATE StatementRemoves all rows from a table but unlike DELETE, it is not transactional and cannot be rolled back.TRU...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views