The easiest method of pagination, limit-offset, is also most perilous. Page through SQL Server results with the ROWNUMBER() function, SQL Server stored procedures to page large tables or queries, Overview of OFFSET and FETCH feature of SQL Server 2012, Page through SQL Server results with the ROW_NUMBER() Function, Overview of OFFSET and FETCH Feature of SQL Server 2012, Expand this test to see if there is any trend on a very large data set as your query pages further and further into the result set, Test on your own sample data with more complex queries (ie. ROW_NUMBER() function 2. For this first you have to find the number of records in the result set. As an input you have to give the number of rows per page and the page number you want to retrieve. In the SQL 2005/2008, can you use TOP for optimize the SELECTs? The “seek” method (a.k.a. Then using the number of records you can navigate through the range of rows and retrieve them alone from the result set. First of all, […] Here is a simple example of pagination of statement SELECT * FROM Sales.Orders ORDER BY OrderID on SQL server 2005, 2008 and 2008 R2. Pagination of results from a select statement is vital in SQL server programming. Moving table to another schema in SQL Server, Adding Key Value Pair To A Dictionary In Python, SQL Server: Concatenate Multiple Rows Into Single String, How To Add Bootstrap In ASP.NET (MVC & Web Forms), SQL Server: Search and Find Table by Name. Here is a simple example to do pagination of results in SQL server for a select statement SELECT * FROM Sales.Orders ORDER BY OrderID. Finally, with SQL Server 2012, we have the new OFFSET and FETCH clause which we can use to perform the paging. Performance object: SQL Server:Memory Manager Counter: Total Server Memory(KB) Note If the instance of the SQL Server is a named instance, the name of the performance object is as follows: MSSQL$InstanceName: Memory Manager. In this version there wasn't any specific functionality to help us with this task so the only option was to use a temporary table with an additional column to perform the paging. The following explain plans appear in the same order as the queries in the test script above. Thanks for doing this post - we were considering how 2012 could improve our app - this is one we'll definitely want to leverage. The other added benefit is that it is also by far the most straightforward and easy to understand of all the methods. In the first query (Script 1), That is a simple SELECT statement, the best performance has: - Client processing time (ms) = 1728. I wrote a sample query to do performance comparison on a large table ~100 mill records returning records at about record 1 million, and the performance of CTE was several magnitudes faster. In Paging File %Usage So you have to use the ROW_NUMBER() method to navigate through the range of rows. Since the CTE was introduced in SQL Server 2005, using this coding technique may be an improvement over SQL Server 2000 code that was ported directly to SQL Server 2005 or 2008 without being tuned. My best attempt was: RANK etc. This Chapter is focused on efficient scanning a large table using pagination with offset on the primary key. By: Ben Snaidero   |   Updated: 2012-05-15   |   Comments (8)   |   Related: More > Paging. However for other versions, the most efficient pagination method is actually simple. Bookmark this question. I am trying to optimize following query (this is most simplified version I could came up with): The problem is, query performance is directly proportional to OFFSET - for offset=0 query executes in 0.0s, but for offset=1000000 execution time is about 23s (and with even greater offset, it can take up … going to the 100th page (“100th page offset”). Browse other questions tagged sql-server performance paging offset-fetch query-performance or ask your own question. Network traffic is small for each client request, but very high for the server processing and to return data from one query to a client: Preparing Dummy Data Nested SQL queries 6. To analyze the performance we'll run the above queries for the first page returned as well as for a page of data somewhere in the middle of the result set. With CTE how do you know whether there is another page ? Cost and Paging Method Using CTE performs with 84% Cost. My question is about how to implement pagination in SQL for queries to this database, as I know I can implement the TOP clause as: SELECT TOP 15 * FROM table but I am unable to find a way to limit this to an offset as can be done with SQL Server using ROWNUMBER. How to execute an SQL Server stored procedure from a C# program? For more information, see Enable the Lock Pages in Memory Option (Windows). 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