CREATE INDEX Example The SQL statement below creates an index named "idx_lastname" on the "LastName" column in the "Persons" table:

Starting with SQL Server 2012 (11.x), in Azure SQL Database, SQL database in Microsoft Fabric, and in Azure SQL Managed Instance, if any one of the specified non-key columns are varchar (max), …

Nov 22, 2025 · The CREATE INDEX statement in SQL is used to create indexes on tables to speed up data retrieval. Indexes work in the background to improve query performance and overall database …

Summary: in this tutorial, you will learn how to use the SQL Server CREATE INDEX statement to create nonclustered indexes for tables. A nonclustered index is a data structure that improves the speed of …

Jun 28, 2023 · By following this guide, you’ll learn how to create an index in SQL to optimize your database operations and reap the benefits of efficient query execution. Creating an index in SQL …

Mar 5, 2025 · Time to see how to use CREATE INDEX in the most popular databases. The simplified MySQL CREATE INDEX syntax is: For the complete syntax, all available options, and index types, …

In summary, the CREATE INDEX statement is used to create an index on a table in SQL. It can improve the performance of queries that search for specific values in a table.

This guide delivers the foundation you need to understand how to create an index in SQL Server. You'll get practical guidance on index syntax, index types, when to use included columns, and how to avoid …

Nov 22, 2025 · In this tutorial on Creating Indexes in SQL, you learned: Indexes are essential for improving database performance—but must be used wisely. Learn how to create indexes in SQL …

Aug 24, 2024 · In SQL Server, indexes can be created in several different situations. For example, when we create a primary key or a UNIQUE constraint, an index is created behind the scenes for us. …