How to query SQL pagination

SQL paging query is performed by dividing the data set into pages. The steps are as follows: Determine the number of records per page. Calculate the offset (number of records skipped). Use the LIMIT clause to specify the number of records per page and use the OFFSET clause to specify the offset. This approach can optimize performance, enhance user experience and save server resources.

SQL pagination query

How to do SQL pagination query?

Using SQL pagination queries, large datasets can be divided into smaller pages for users to get and view in batches.

Steps to perform pagination query:

1. Determine the number of records per page: Determines the number of records displayed per page, such as 10 or 20.
2. Calculate offset: The offset is the number of records skipped by the query. To calculate the offset, subtract 1 from the page you want to display and multiply by the number of records per page. For example, for page 3, the offset will be (3 - 1) * 10 = 20.
3. Use the LIMIT and OFFSET clauses: Use the LIMIT clause to specify the number of records per page in the SELECT statement and use the OFFSET clause to specify the offset.

Example query:

 <code class="sql">SELECT * FROM table_name LIMIT 10 OFFSET 20;</code>

This query will get the records for page 3 from the table table_name , each page containing 10 records.

advantage:

• Optimized performance: Paging large datasets can reduce the number of records loaded into memory at one time, thereby increasing query speed.
• Enhanced User Experience: Pagination makes it easier for users to browse large datasets without waiting for all records to be loaded.
• Server resource savings: Pagination queries can reduce server load because it processes only smaller datasets at a time.

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