In the last episode (Mar 21), Viraj Alankar said:
> sql
> 
> I'm confused as to what 'delete quick' does and when to use it. The
> manual states:
> 
> If you specify the word QUICK then the table handler will not merge
> index leafs during delete, which may speed up certain kind of
> deletes.

Normally when you delete an entry from an index, if the deletion causes
an index block to become half-empty (or 25%, or whatever; depends on
the algorithm), mysql will start coalescing index blocks.  This results
in a smaller, more efficient index.

If you are simply deleting a bunch of records only to re-insert new
ones, there's not much use in trying to optimize the index halfway
through the operation.

-- 
        Dan Nelson
        [EMAIL PROTECTED]

---------------------------------------------------------------------
Before posting, please check:
   http://www.mysql.com/manual.php   (the manual)
   http://lists.mysql.com/           (the list archive)

To request this thread, e-mail <[EMAIL PROTECTED]>
To unsubscribe, e-mail <[EMAIL PROTECTED]>
Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php

Reply via email to