[CALCITE-3794] RexSimplify should return early if there is no pulled up predicate when simplifying using predicates

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.21.0
• Fix Version/s: 1.22.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Chunwei Lei
• Reporter: Chunwei Lei
• Created: 13/Feb/20 08:24
• Updated: 06/Mar/20 04:35
• Resolved: 16/Feb/20 12:09

Description

If there is no pulled up predicates, it can not simplify anything in simplifyUsingPredicates[1]. So it'd better return directly to reduce overhead.

[1]https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/rex/RexSimplify.java#L1572-L1586

Issue Links

• links to: GitHub Pull Request #1804