SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 5)
    Identifier id
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier value1
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier value2
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier value3
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier value4
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table_nullable_signed_values
   ExpressionList (children 1)
    Identifier id
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier id
