SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 8)
    Identifier t1.id
    Identifier test_table_join_1.id
    Identifier t1.value
    Identifier test_table_join_1.value
    Identifier t2.id
    Identifier test_table_join_2.id
    Identifier t2.value
    Identifier test_table_join_2.value
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table_join_1 (alias t1)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_table_join_2 (alias t2)
     TableJoin
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL