Uploaded image for project: 'Ignite'
  1. Ignite
  2. IGNITE-13919

Calcite integration. Single group aggregates

Attach filesAttach ScreenshotAdd voteVotersWatch issueWatchersCreate sub-taskLinkCloneUpdate Comment AuthorReplace String in CommentUpdate Comment VisibilityDelete Comments
    XMLWordPrintableJSON

Details

    • Improvement
    • Status: Patch Available
    • Minor
    • Resolution: Unresolved
    • None
    • None
    • sql
    • Docs Required, Release Notes Required

    Description

      Investigate the optimization for single group aggregates,
      e.g.: SELECT <aggregates> FROM <table>

      Now the hash based aggregates are used for this case.
      We can obtain a little performance improvement.
      Also the special cases (e.g.: SELECT COUNT(<any-columns>) FROM <table>) may be optimized to use table/cache size.

      Attachments

        Issue Links

        Activity

          This comment will be Viewable by All Users Viewable by All Users
          Cancel

          People

            alex_pl Aleksey Plekhanov
            tledkov-gridgain Taras Ledkov

            Dates

              Created:
              Updated:

              Time Tracking

                Estimated:
                Original Estimate - Not Specified
                Not Specified
                Remaining:
                Remaining Estimate - 0h
                0h
                Logged:
                Time Spent - 1.5h
                1.5h

                Slack

                  Issue deployment