SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Identifier Name
    Function uniqExactMerge (alias ValueUniq) (children 1)
     ExpressionList (children 1)
      Identifier Value.AggregateFunction(uniqExact, Int64)
    Function avgMerge (alias ValueAvg) (children 1)
     ExpressionList (children 1)
      Identifier Value.AggregateFunction(avg, Int64)
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_agg_variant
   ExpressionList (children 1)
    Identifier Name
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier Name
