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From:Michael Widenius Date:March 11 2000 10:59pm
Subject:Re[4]: Locked tables while "Sending data" !?
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>>>>> "BAUMEISTER" == BAUMEISTER Alexandre <alex@stripped>
> writes:

BAUMEISTER> Bonjour Michael,
Tim> On Fri, Mar 10, 2000 at 05:04:09PM -0500, Thimble Smith wrote:
>>>> 
>>>> >Can you, or anyone else from TcX, comment more constructively on the
>>>> >last two paragraphs of my previous message?
>>>> 
>>>> I don't know what the answer is, because I don't know that code
>>>> well enough.  It seems like the server should be able to copy from
>>>> a temporary results table to the client and unlock the tables used
>>>> in the query.  It would be nice to be able to force this to happen,
>>>> either in the SQL statement or with a connection flag (or both).
>>>> 
>>>> >Also, Alexandre has just observed that the problem does not appear
> to
>>>> >be resolved by adding an ORDER BY. That doesn't match your
> explanation
>>>> >of the cause of the problem.
>>>> >
>>>> >I believe that there is a serious concurrency issue here that needs
>>>> >addressing, not dismissing.
>>>> 
>>>> I will look into it, and find out what it would take to make this
>>>> happen (or, maybe find out why it isn't happening and give a full
>>>> account).

Tim> Thank you. Much appreciated.

Tim> Tim.

MW> A last note about this thread:

MW> It would be trivial to add a new flag that will force creation of
MW> temporary sets on file.

MW> Thimbley should be able to do this for MySQL 3.23.14 :)


BAUMEISTER> And  it would be great if instead of using a temporary table on the
BAUMEISTER> hard  disk  (slow)  a memory buffer would be use if SMALL_RESULT is
BAUMEISTER> notified in the query.

This will of course be the default.

Regards,
Monty
Thread
Interbase vs. mySQL Opinions WantedJSC-OA)7 Mar
  • Locked tables while "Sending data" !?BAUMEISTER Alexandre8 Mar
    • Re: Locked tables while "Sending data" !?sinisa9 Mar
      • Re: Locked tables while "Sending data" !?Tim Bunce9 Mar
      • Re[2]: Locked tables while "Sending data" !?BAUMEISTER Alexandre10 Mar
        • Re: Re[2]: Locked tables while "Sending data" !?sinisa10 Mar
          • Re: Re[2]: Locked tables while "Sending data" !?Tim Bunce10 Mar
            • Re: Re[2]: Locked tables while "Sending data" !?sinisa10 Mar
              • Re[4]: Locked tables while "Sending data" !?BAUMEISTER Alexandre10 Mar
                • Re: Re[4]: Locked tables while "Sending data" !?sinisa10 Mar
              • Re: Re[2]: Locked tables while "Sending data" !?Tim Bunce10 Mar
                • Re: Re[2]: Locked tables while "Sending data" !?Thimble Smith11 Mar
                  • Re: Re[2]: Locked tables while "Sending data" !?Tim Bunce11 Mar
                    • Re: Re[2]: Locked tables while "Sending data" !?Michael Widenius11 Mar
                      • Re[4]: Locked tables while "Sending data" !?BAUMEISTER Alexandre11 Mar
                        • Re[4]: Locked tables while "Sending data" !?Michael Widenius12 Mar
                          • Re: Locked tables while "Sending data" !?Tim Bunce13 Mar
                            • Re: Locked tables while "Sending data" !?Michael Widenius13 Mar
                              • Re: Locked tables while "Sending data" !?Tim Bunce13 Mar
                                • Re: Locked tables while "Sending data" !?Michael Widenius13 Mar
                                  • Re: Locked tables while "Sending data" !?Tim Bunce13 Mar
                                • Re: Locked tables while "Sending data" !?Michael Widenius14 Mar
                                  • Re: Locked tables while "Sending data" !?Tim Bunce14 Mar
                                  • Re: Locked tables while "Sending data" !?Tim Bunce24 Apr
                                    • Re: Locked tables while "Sending data" !?Michael Widenius26 Apr
                                      • Re: Locked tables while "Sending data" !?Tim Bunce26 Apr
                                        • Re: Locked tables while "Sending data" !?Michael Widenius27 Apr
                    • Re[4]: Locked tables while "Sending data" !?BAUMEISTER Alexandre11 Mar
            • Re[4]: Locked tables while "Sending data" !?BAUMEISTER Alexandre10 Mar
              • Re[4]: Locked tables while "Sending data" !?Michael Widenius11 Mar