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Re: Planner create a slow plan without an available index

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On Tue, Aug 30, 2005 at 11:25:26 +0200,
  Ben-Nes Yonatan <da@xxxxxxxxxxxx> wrote:
> 
> If btree index is not suitable for this query then which index is? as 
> far as I understand the rtree index doesnt support range checks and the 
> hash index is not recommended by almost everyone (including the manual) 
> so the only one left is the gist, is that the most suitable index for 
> this query? if so can you give me a link as to where I can learn how to 
> use such an index efficently? (by the way the only link that worked at 
> the postgresql manual "Chapter 48. GiST Indexes" is the one which direct 
> to "the University of California at Berkeley's GiST Indexing Project web 
> site" the other 2 links direct to 404 pages and I guess that they should 
> be removed).

rtree indexes allow you to quickly check for containment. Range checking
is one dimensional containment.

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