SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Identifier id
    Function avg (children 1)
     ExpressionList (children 1)
      Identifier value1
    Function avg (children 1)
     ExpressionList (children 1)
      Identifier value2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table_nullable_float_values
   ExpressionList (children 1)
    Identifier id
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier id
