tables with overhead

I would like to know whether there is any query to find table names with overhead.

This query is particular to MySQL Database, and I believe that those who work on MySQL will be knowing what开发者_C百科 overhead to a table is.

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phpmyadmin - select database - go to bottom of screen - click "Check tables having overhead" It selects tables with overhead.

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I think schedule optimization is only way available.

Thanks for all your help.