[GitHub] [arrow-datafusion] alamb opened a new issue #178: AggregateExpression name inconsistency

[GitBox <gi...@apache.org>]

alamb opened a new issue #178:
URL: https://github.com/apache/arrow-datafusion/issues/178


   *Note*: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-11622
   
   I have an aggregate query and the AggregateExpr has this name
   {code:java}
    SUM(l_extendedprice Multiply Int64(1)){code}
   This is hiding the fact that the expression has a CAST operation:
   {code:java}
    expr: BinaryExpr { left: Column { name: "l_extendedprice" }, op: Multiply, right: CastExpr { expr: Literal { value: Int64(1) }, cast_type: Float64 } }, nullable: true }{code}
   In Ballista, this causes a problem with serde because after a rountrip, the expression has a name that includes the CAST and this causes a schema mismatch.
   {code:java}
   SUM(l_extendedprice Multiply CAST(Int64(1) AS Float64)) {code}


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