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From hsuanyi <...@git.apache.org>
Subject [GitHub] drill pull request: DRILL-4525: Allow SqlBetweenOperator to accept...
Date Wed, 23 Mar 2016 22:54:40 GMT
Github user hsuanyi commented on a diff in the pull request:

    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/DrillOperatorTable.java
    @@ -157,9 +159,23 @@ private void populateWrappedCalciteOperators() {
           } else if(calciteOperator instanceof SqlFunction) {
             wrapper = new DrillCalciteSqlFunctionWrapper((SqlFunction) calciteOperator,
    +      } else if(calciteOperator instanceof SqlBetweenOperator) {
    +        // During the procedure of converting to RexNode,
    +        // StandardConvertletTable.convertBetween expects the SqlOperator to be a subclass
of SqlBetweenOperator
    +        final SqlBetweenOperator sqlBetweenOperator = (SqlBetweenOperator) calciteOperator;
    +        wrapper = new SqlBetweenOperator(sqlBetweenOperator.flag, sqlBetweenOperator.isNegated())
    +          @Override
    +          public boolean checkOperandTypes(
    --- End diff --
    @jacques-n, Calcite has different (more strict) definition of type-compatibilty while
Drill is more flexible. 
    What we have done is to have our own type-compatibilty in drill. Please see the new pull

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