GitHub user arina-ielchiieva opened a pull request:
https://github.com/apache/drill/pull/1152
DRILL-6199: Add support for filter push down and partition pruning wiâ¦
â¦th several nested star sub-queries
Re-written original solution to apply rule on later stages when we work
with Drill rels rather then with Calcite rels. With several nested sub-queries
we end up with several projects each for sub-query: Filter - Project .... -
Scan. When applying rule with Drill rels, other rules will take care of such
intermediate projects and we end up checking only three cases: Project - Scan,
Filter - Scan, Filter - Project - Scan.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/arina-ielchiieva/drill DRILL-6199
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/1152.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1152
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commit ae64b3f5afbfe779d297e568c5228a443737b449
Author: Arina Ielchiieva <arina.yelchiyeva@...>
Date: 2018-03-04T20:12:06Z
DRILL-6199: Add support for filter push down and partition pruning with
several nested star sub-queries
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