Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-446 Reuse quick_condition_rows in fanout computations
  3. MDEV-3858

Change JOIN_TAB::records_read from ha_rows to double

        Details

        • Type: Technical task
        • Status: Closed
        • Priority: Major
        • Resolution: Fixed
        • Affects Version/s: 10.0.1
        • Fix Version/s: 10.0.1
        • Component/s: None
        • Labels:
          None

          Description

          Currently JOIN_TAB::records_read is of type ha_rows. This is an integer type, which prevents proper selectivity and rows estimates. This trivial task has been factored out in order to separate the changes in EXPLAIN due to this change compared to changes in EXPLAIN due to added selectivity estimates.

            Gliffy Diagrams

              Attachments

                Activity

                Hide
                Permalink
                timour Timour Katchaounov added a comment -

                Approved by Sergey, pushed to 10.0.

                Show
                timour Timour Katchaounov added a comment - Approved by Sergey, pushed to 10.0.

                  People

                  • Assignee:
                    timour Timour Katchaounov
                    Reporter:
                    timour Timour Katchaounov
                  • Votes:
                    0 Vote for this issue
                    Watchers:
                    1 Start watching this issue

                    Dates

                    • Due:
                      Created:
                      Updated:
                      Resolved:

                      Time Tracking

                      Estimated:
                      Original Estimate - 2 hours
                      2h
                      Remaining:
                      Remaining Estimate - 0 minutes
                      0m
                      Logged:
                      Time Spent - 2 hours
                      2h