SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 6)
    Identifier test_table_join_1.id
    Identifier test_table_join_1.value
    Identifier test_table_join_2.id
    Identifier test_table_join_2.value
    Identifier test_table_join_3.id
    Identifier test_table_join_3.value
   TablesInSelectQuery (children 3)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table_join_1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_table_join_2
     TableJoin
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_table_join_3
     TableJoin
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL