SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 4)
    Function grouping (alias grouping_id) (children 1)
     ExpressionList (children 1)
      Identifier id
    Function grouping (alias grouping_value) (children 1)
     ExpressionList (children 1)
      Identifier value
    Identifier id
    Identifier value
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table
   ExpressionList (children 2)
    ExpressionList (children 1)
     Identifier id
    ExpressionList (children 1)
     Identifier value
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier grouping_id
    OrderByElement (children 1)
     Identifier grouping_value