[jira] [Created] (CALCITE-1661) Recognize aggregation function types as FRACTIONAL instead of DOUBLE

[Jesus Camacho Rodriguez (JIRA)]

Jesus Camacho Rodriguez created CALCITE-1661:
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             Summary: Recognize aggregation function types as FRACTIONAL 
instead of DOUBLE
                 Key: CALCITE-1661
                 URL: https://issues.apache.org/jira/browse/CALCITE-1661
             Project: Calcite
          Issue Type: Bug
          Components: druid
    Affects Versions: 1.12.0
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez
             Fix For: 1.12.0


Currently, whether to use fractional or integer aggregations is based on 
following code (L699 in DruidQuery.java).

{code}
final boolean b = aggCall.getType().getSqlTypeName() == SqlTypeName.DOUBLE;
{code}

Since Hive might use other fractional types for the aggregation, we might end 
up using the wrong type of aggregation in Druid. We could extend the check as 
follows:

{code}
final boolean b = 
SqlTypeName.FRACTIONAL_TYPES.contains(aggCall.getType().getSqlTypeName());
{code}



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