How Can I Optimize Pagination in SQL Server for Maximum Performance?

Best practices to improve SQL Server paging performance

The efficiency of SQL Server paging query directly affects application performance. This article discusses the best paging methods applicable to different SQL Server versions, and focuses on solving the scenario where the total number of records needs to be obtained at the same time.

SQL Server 2000-2012 version

Before SQL Server 2012, a common paging method was to use the ROW_NUMBER() function to assign row numbers to the result set, and then filter the data for the required page number through another query. However, this approach is inefficient when dealing with large data sets.

SQL Server 2012 and later versions: OFFSET and FETCH

SQL Server 2012 introduced the OFFSET and FETCH clauses, which greatly simplifies paging operations. The following query starts at offset 10 and retrieves the next 10 rows of data:

<code class="language-sql">SELECT * FROM TableName ORDER BY id OFFSET 10 ROWS FETCH NEXT 10 ROWS ONLY;</code>

Key points:

• OFFSET ... FETCH must contain an ORDER BY clause.
• OFFSET must be used with FETCH.
• TOP, OFFSET and FETCH cannot be used simultaneously in the same query.

Other suggestions:

• Create indexes for sorted columns to optimize performance.
• For complex queries, consider using temporary tables to store intermediate results.
• When using stored procedures, parameterize input parameters to prevent SQL injection attacks.

By learning and applying these best practices, you can build efficient and scalable SQL Server paging solutions that optimize performance and reduce query execution times.

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