[CALCITE-3544] RexSimplify does not exploit all known 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: 28/Nov/19 09:33
• Updated: 06/Mar/20 04:35
• Resolved: 30/Nov/19 09:11

Description

When there are multiple predicates in RexSimplify, only the first predicates will be used to simplify the RexNode. The following test can reproduce.

// RexProgramTest.java
@Test public void testSimplifyRangeWithMultiPredicates() {
  final RexNode ref = input(tInt(), 0);
  RelOptPredicateList relOptPredicateList = RelOptPredicateList.of(rexBuilder,
      ImmutableList.of(gt(ref, literal(1)), le(ref, literal(5))));
  checkSimplifyFilter(gt(ref, literal(9)), relOptPredicateList, "false");
}

Issue Links

• links to: GitHub Pull Request #1612