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Thread: resetting id numbers, is that a common practice?

  1. #1
    Join Date
    Mar 2010

    resetting id numbers, is that a common practice?

    Is it a common practice to want to periodically renumber a tables id column (int primary key, auto_increment)?

    meaning that, over time, as some rows get deleted, it would desirable to reset the id's so numbers are not skipped?

    and if so, is there a mysql or PHP function that would do that?,

    thanks for the help

  2. #2
    Join Date
    Jan 2007
    Not common as far as I've seen. And doing so would normally be a pretty tedious and error-prone process with little to no return on the investment.

    If you're running out of PK's, the "solution" is to convert to BIGINT, GUID, or multipart PK's.

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