MySQL Pagination: Can I Avoid the Two-Query Problem?

MySQL Pagination: Double-Query Dilemma

When implementing pagination in MySQL, a common approach involves two queries: one to determine the total number of results and another to limit the results. This double-query method can create a performance overhead.

The question arises, is there a way to retrieve both the total result count and limit the results in a single query? The answer is no, this double-query process is a fundamental aspect of MySQL pagination.

However, there are techniques to mitigate the performance impact:

• Caching the count: Store the result count in a cache for a short duration to avoid repeated database calls.
• Using SQL_CALC_FOUND_ROWS and SELECT FOUND_ROWS(): While this approach avoids a second query, it can trigger a bug in MySQL that slows down ORDER BY queries on large tables.

Ultimately, the double-query approach remains a reliable and efficient solution for pagination in MySQL. By leveraging caching techniques, the impact on performance can be minimized while ensuring accurate pagination results.

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