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SQL UPDATE Statement

In SQL, the UPDATE statement is used to modify existing records in a table. Whether you need to update a single record or multiple rows at once, SQL provides the necessary functionality to make these changes.

The UPDATE statement is essential for maintaining the integrity of your data by allowing you to correct or modify existing entries in your database.

In this article, we will cover the fundamentals of the UPDATE statement, including its syntax, basic usage, and advanced techniques.

We will also explore common pitfalls, optimization tips, and real-world examples to ensure you can use the UPDATE statement effectively in your SQL queries.

UPDATE Statement in SQL

The UPDATE statement in SQL is used to update the data of an existing table in the database.

We can update single columns as well as multiple columns using the UPDATE statement as per our requirement.

Syntax:

The syntax for SQL UPDATE Statement is :

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

Where,

table_name: name of th