What Are All The Dml Commands

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What Are DML Commands?

DML (Data Manipulation Language) commands are used to modify data in a database. They are an essential part of any database management system, as they allow users to add, change, and remove data from tables.

Types of DML Commands

There are three main types of DML commands:

  • INSERT – Adds new rows to a table.
  • UPDATE – Modifies existing rows in a table.
  • DELETE – Removes rows from a table.

Syntax

The syntax for each DML command is as follows:

INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...);

UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;

DELETE FROM table_name WHERE condition;

Examples

Here are some examples of how to use each DML command:

-- Insert a new row into the customers table
INSERT INTO customers (name, email, address) VALUES ('John Doe', 'john@doe.com', '123 Main Street');

-- Update a row in the customers table
UPDATE customers SET name = 'Jane Doe' WHERE id = 1;

-- Delete a row from the customers table
DELETE FROM customers WHERE id = 2;

Conclusion

DML commands are a powerful tool for managing data in a database. They allow users to easily add, change, and remove data from tables. By understanding the syntax and purpose of each DML command, you can effectively manage your database and ensure that it contains the most up-to-date and accurate data.

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