Re: OT - database and indexes... but anyone please?

From: Date: Mon, 26 Sep 2005 07:34:37 +0000
Subject: Re: OT - database and indexes... but anyone please?
References: 1 2  Groups: php.general 
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Rory Browne wrote: <snip>deleting an index(a good index that > is) would slow the db down in certain cases. Deleting a "bad index" > would speed certain operations up. <snip> If the index in question happens to be a unique index or a primary key (really just a special case of index) - you could be breaking the logic of the table (allowing duplicates where there should be none). Pretty much as Rory (the other one) said: An index makes write operations slower and read operations faster. When you are doing bulk inserts to a table it is often a good idea to drop any index , populate the table and then re-index (for performance reasons). Regards Rory

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