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Mysql clear up id numbers order


Cyto

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You generally would need to export your data, truncate the table, and re-import the data.

 

The reason there is not a built-in function to do this is because once you assign identifiers to data, changing those values will causes problems in MOST real applications. It also requires a large amount of processing that makes it impractical in real applications that must remain functional at all times. The database does not care if there are gaps and you should not care either. If gaps are an actual problem in what you are doing, that is an indication that you are using identifiers incorrectly in your application.

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