How to Avoid \'Can\'t Reopen Table\' Error in MySQL for Temporary Tables?

Overcoming MySQL's "Can't Reopen Table" Error for Temporary Tables

When working with MySQL, you may encounter the "Can't reopen table" error when attempting to use a temporary table more than once in a query. This error stems from a limitation in MySQL that doesn't allow for multiple usage of temporary tables within the same query.

To alleviate this issue and preserve the performance benefits of using temporary tables, consider the following workaround:

Duplicate the temporary table. This solution is effective when the temporary table is relatively small, which is often the case. By creating multiple instances of the temporary table, you can avoid the "Can't reopen table" error while still utilizing the speed advantages of temporary storage.

Implement this workaround by creating a duplicate temporary table for each additional INNER JOIN required in your query. This ensures that each INNER JOIN operation has its own unique temporary table to work with, preventing the reuse issue.

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