[jira] [Created] (CALCITE-3544) RexSimplify does not simpilfy RexNode completely

["Chunwei Lei (Jira)" <ji...@apache.org>]

Chunwei Lei created CALCITE-3544:
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             Summary: RexSimplify does not simpilfy RexNode completely
                 Key: CALCITE-3544
                 URL: https://issues.apache.org/jira/browse/CALCITE-3544
             Project: Calcite
          Issue Type: Improvement
          Components: core
    Affects Versions: 1.21.0
            Reporter: Chunwei Lei
            Assignee: Chunwei Lei


When there are multiple predicates in RexSimplify, only the first predicates will be used to simplify the RexNode. The following test can reproduce.
{code:java}
// code placeholder
@Test public void testSimplifyRangeWithMultiPredicates() {
  RelDataType type = typeFactory.createSqlType(SqlTypeName.INTEGER);
  final RexLiteral c1 = rexBuilder.makeExactLiteral(BigDecimal.ONE);
  final RexLiteral c5 = rexBuilder.makeExactLiteral(BigDecimal.valueOf(5L));
  final RexLiteral c9 = rexBuilder.makeExactLiteral(BigDecimal.valueOf(9L));
  final RexNode ref = rexBuilder.makeInputRef(type, 1);
  final RexNode pred1 = rexBuilder.makeCall(SqlStdOperatorTable.GREATER_THAN, ref, c1);
  final RexNode pred2 = rexBuilder.makeCall(SqlStdOperatorTable.LESS_THAN, ref, c5);

  List<RexNode> predicates = new ArrayList<>();
  predicates.add(pred1);
  predicates.add(pred2);
  RelOptPredicateList relOptPredicateList = RelOptPredicateList.of(rexBuilder, predicates);
  RexNode node = rexBuilder.makeCall(SqlStdOperatorTable.GREATER_THAN, ref, c9);

  final RexSimplify simplify =
      new RexSimplify(rexBuilder, relOptPredicateList, RexUtil.EXECUTOR)
          .withParanoid(true);
  node = simplify.simplify(node);

  assertThat(node, is(falseLiteral));
}


{code}



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