Nov 18, 2025 · Clustered indexes sort and store the data rows in the table or view based on their key values. These key values are the columns included in the index definition. There can be only one …

Sep 8, 2025 · A Clustered Index defines the physical order of rows in a table. When you create a clustered index on a column, SQL Server rearranges the actual data rows to match the index order.

While MySQL adds a hidden clusters index even if a table doesn't have a Primary Key, SQL Server always builds a Clustered Index if a table has a Primary Key column.

May 1, 2025 · In this section we cover what a clustered index is, how to create and things you should know about clustered indexes.

A clustered index in SQL is a type of index that determines the physical order of data in a table. It defines the order in which the rows of a table are stored on disk or other storage media.

However, since they dictate the physical layout, each table can have only one clustered index. In this blog, we’ll dive into what clustered indexes are, how they work, and how to use them effectively to …

Apr 12, 2025 · Indexes help SQL Server quickly find rows in a table, just like an index in a book. There are two main types: Clustered Index: Sorts and stores the data rows physically in the table in order. …

Sep 12, 2024 · First, here’s a quick overview of the difference between clustered and nonclustered indexes: A clustered index determines the physical order of data in a table. There can be only one …

This tutorial introduces you to the SQL Server clustered index and shows you how to define a clustered index for a table.

Nov 18, 2025 · You can create clustered indexes on tables by using SQL Server Management Studio or Transact-SQL. With few exceptions, every table should have a clustered index.