Uploaded image for project: 'Tajo'
  1. Tajo
  2. TAJO-853

Refactoring FilterPushDown for OUTER JOIN

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.9.0
    • Component/s: None
    • Labels:
      None

      Description

      Currently Tajo doesn't support a filter OUTER JOIN's ON clause.
      or has some bugs. There is some rules for this in the following urls.

      Briefly summarized as follows.

      • Join Predicate on Preserved Row Table: Used for join condition(not filter)
      • Join Predicate on Null Supplying Table: Can push down to the table scan
      • Where Predicate on Preserved Row Table: Can push down to the table scan
      • Where Predicate on Null Supplying Table: Used for filter with join result data. This filter condition is attached to SELECTION Node.

        Attachments

          Activity

            People

            • Assignee:
              hjkim Hyoungjun Kim
              Reporter:
              hjkim Hyoungjun Kim
            • Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: