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From:Peter Brawley Date:January 15 2010 7:00am
Subject:Re: Better that `NOT IN`
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For alternatives, have a look at "The unbearable slowness of IN()" at 
http://www.artfulsoftware.com/queries.php.

PB

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Junior Ortis wrote:
> Hi guys i have a problem, 3 big tables: item_instance about 15KK rows,
> character_inventory 15KK rows, guild_bank_item 2KK rows.
>
> And i need i clean on item_instance how this query:
>
> DELETE FROM `item_instance` WHERE guid NOT IN(SELECT item FROM
> `character_inventory`) AND guid NOT IN(SELECT item_guid FROM
> `guild_bank_item`) AND
> guid NOT IN(SELECT item_guid FROM `mail_items`) and guid NOT IN(SELECT
> itemguid FROM `auctionhouse`);
>
> Well atm is running about 13 hours, State = Sending Data.
>
> I will be a better option ?
>
> Thanks all !
>
>   
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Thread
Better that `NOT IN`Junior Ortis15 Jan
  • Re: Better that `NOT IN`Peter Brawley15 Jan
    • RE: Better that `NOT IN`Daevid Vincent15 Jan
      • Re: Better that `NOT IN`Dan Nelson15 Jan
  • Re: Better that `NOT IN`fsb15 Jan