How to speed up the process of creating temporary table…

There are several methods available to try to solve the issue of slow MySQL temporary table creation.

1. Adjusting the temporary table memory limit: You can increase the memory limit of temporary tables by modifying the values of the tmp_table_size and max_heap_table_size parameters. This can reduce disk read and write operations for temporary tables, improving the speed of creation.
2. Optimize the query statement: review the query statement that creates temporary tables to ensure that they are using the appropriate indexes and conditions in order to reduce the complexity and amount of data in the query.
3. To reduce the amount of data in temporary tables, consider adding appropriate conditions to limit the table size, or splitting the query into multiple smaller queries to process the data separately.
4. Using memory temporary tables: MySQL supports storing temporary tables in memory instead of on disk. Memory temporary tables can be used by setting the tmp_table_type parameter to MEMORY. However, it is important to note that the size of memory temporary tables is limited by the tmp_table_size parameter.
5. Upgrade hardware: If the above methods are not effective, consider upgrading the server hardware where MySQL is located, including CPU, memory, storage, etc., to improve the overall performance of the system.

In addition to the methods mentioned above, there are other possible solutions that may be dependent on the specific situation and system environment. During the optimization process, MySQL’s performance analysis tools can be used to identify bottlenecks and take appropriate measures based on the analysis results.