[jira] [Updated] (CALCITE-3544) RexSimplify does not exploit all known predicates

["Stamatis Zampetakis (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-3544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stamatis Zampetakis updated CALCITE-3544:
-----------------------------------------
    Summary: RexSimplify does not exploit all known predicates  (was: RexSimplify does not simpilfy RexNode completely)

> RexSimplify does not exploit all known predicates
> -------------------------------------------------
>
>                 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
>            Priority: Major
>
> 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}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)