planner/cascades: add transformation rule MergeAdjacentLimit #14306
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ghost
requested review from
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francis0407
reviewed
Jan 3, 2020
zz-jason
reviewed
Jan 5, 2020
…to ensure to limit has same engine type
48 tasks
francis0407
reviewed
Jan 9, 2020
francis0407
added
status/LGT2
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/run-all-tests |
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What problem does this PR solve?
This PR adds Transformation rule MergeAdjacentLimit which is a part of limit in cascades planner(#13709).
What is changed and how it works?
add a transformation rule MergeAdjacentLimit. The rule merge the limit and offset of adjacent limit to create a new GroupExpr with no simplification
Check List
Tests
Code changes