Row Offset in SQL Server
To skip and fetch rows in SQL Server, use OFFSET
and FETCH NEXT
. As an instance, to bypass the first 10 rows and obtain the next 5:
To guarantee consistent output, it's crucial to ORDER BY
the data. This approach works from SQL Server 2012 onwards.
Using select statement smartly
Avoid SELECT *
like the plague. Instead, specify the particular columns you need. It reduces the amount of data SQL Server needs to process, boosting performance, especially with large datasets.
Overcoming Paging obstacles in SQL Server 2005-2008
If you're dealing with SQL Server versions before 2012, ROW_NUMBER()
comes to the rescue. Couple that with BETWEEN
for efficient pagination:
A smarter approach for initial fetch
Use the TOP
keyword to swiftly grab the initial set of rows. This way, we can decrease the load:
Remember, a good index is your best friend when working with arbitrary page access and combined ROW_NUMBER()
+ BETWEEN
in SQL Server 2005-2008 R2.
Offset-Fetch: A double-edged sword
While OFFSET-FETCH
is an efficient method for row offsetting, it's vital to perform regular performance tests. As with any powerful tool, it requires careful handling to avoid possible pitfalls.
Ancient warriors of SQL Server 2000
When neither OFFSET-FETCH
nor ROW_NUMBER()
work well, dust off SQL Server 2000 and its techniques for navigating large result sets. In such cases, SQL cursors might be your weapon of choice.
Offset-fetch Vs. API pagination
Who wins depends on your server's workload and the frequency of queries. Make sure you have configured your indexing properly for maximum pagination performance.
Tips for old SQL servers
Users with SQL Server 2000 can use tools such as temp tables, cursors, and dynamic SQL for pagination. These ancient warriors might still save your day when dealing with legacy systems.
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