Re: Item compression in the Gist index

On Mon, May  2, 2022 at 02:48:27PM +0200, Baca Radim wrote:
> Hi,
> we are developing an extension for multidimensional data. We have created a
> Gist index that is heavily inspired by a cube extension. Right now we would
> like to add some item compression since data items in a node share a
> significant portion of a tuple prefix. However, I have no idea how to handle
> information stored on a node level in Gists' compression method. Is there
> any example? Unfortunately, the cube extension does not implement item
> compression.
> To be more specific we would like to store in the node a common prefix for
> all tuples in the node.

Uh, SP-GiST does prefix compression.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Indecision is a decision.  Inaction is an action.  Mark Batterson