SQL Query to Append Past Order with Most Recent Order - sql-server

Question

I have an order table that has both past membership data and current data. I want to view this data in single row. I have a temp table for past data, but not exactly sure how to write this query to get current data in the same row. I know it has something to do with the MAX(order no). Here is the query to get the past membership data in a temp table
set transaction isolation level read uncommitted
declare
#ship_master_customer_id varchar (10), #cycle_begin_date datetime, #cycle_end_date datetime, #OrderNo varchar(10), #Description Char(100)
create table #t1(ShipMasterCustomerID varchar(10), OrderNo varchar (10), cycle_begin_date datetime, cycle_end_date datetime, Description Char(100))
Insert into #t1
Select SHIP_MASTER_CUSTOMER_ID, ORDER_NO, CYCLE_BEGIN_DATE,CYCLE_END_DATE, DESCRIPTION FROM [ORDER_DETAIL]
where SHIP_MASTER_CUSTOMER_ID = '11115555' and
CYCLE_END_DATE = '2/29/2016'
Select * from #t1
Drop table #t1
Here is my script.
declare
#ship_master_customer_id varchar (10), #cycle_begin_date datetime, #cycle_end_date datetime, #OrderNo varchar(10), #Description Char(100)
create table #t2(ShipMasterCustomerID varchar(10), OrderNo varchar (10), cycle_begin_date datetime, cycle_end_date datetime, Description Char(100))
Insert into #t2 (shipmastercustomerid, orderno, cycle_begin_date, cycle_end_date, DESCRIPTION)
VALUES (1111555,9004731815, 2015/01/01, 2015/31/12,'Annual Mem'),
(1111555, 9005148308, 2016/01/01, 2016/31/12,'Annual Mem'),
(1111222, 9005027152, 2015/01/03, 2016/29/02,'Annual Mem'),
(1111222, 9005440369, 2016/01/03, 2017/31/03,'Annual Mem'),
(2223333, 9005027152, 2014/01/01, 2016/31/12,'Annual Mem'),
(2223333, 9005442116, 2016/01/01, 2017/31/12,'Annual Mem')
Select * from #t2
Drop table #t2
Sample Data

Answer 1

You don't need a temp table. You can query the same table twice, giving it an alias and then use the alias to prefix your column names. Since you didn't give us a complete schema or a fiddle I'm simulating your database with a temp table but the essence is here. There are considerations that you didn't mention, though. Are you guaranteed that every customer will have both a historical AND a current record? If not, they will not appear in the query below because of the INNER JOIN. You could change it to an OUTER join but when customers don't have a new record you will see NULL values in those columns. My point is that here be dragons... this is by no means a complete or bulletproof solution, only a nudge in the right direction.
DECLARE #ORDER_DETAIL AS TABLE(
ShipMasterCustomerId varchar(20),
OrderNo varchar(20),
cycle_begin_date date,
cycle_end_date date,
Description varchar(100)
)
INSERT #ORDER_DETAIL SELECT '11115555', '9005337015', '02/26/15', '2/29/16', 'Membership 26-Feb-2015 to 29-Feb-2016'
INSERT #ORDER_DETAIL SELECT '11115555', '9005743023', '02/28/17', '2/28/17', 'Membership 01-Mar-2016 to 28-Feb-2017'
SELECT
hist.ShipMasterCustomerId,
hist.OrderNo,
hist.cycle_begin_date,
hist.CYCLE_END_DATE,
hist.[Description],
curr.ShipMasterCustomerId,
curr.OrderNo,
curr.cycle_begin_date,
curr.CYCLE_END_DATE,
curr.[Description]
FROM
#ORDER_DETAIL AS hist
INNER JOIN #ORDER_DETAIL AS curr ON (
(curr.ShipMasterCustomerId = hist.ShipMasterCustomerId) AND (curr.cycle_end_date =
(SELECT MAX(cycle_end_date) FROM #ORDER_DETAIL WHERE ShipMasterCustomerId = hist.ShipMasterCustomerId))
)
WHERE
(hist.ShipMasterCustomerId = '11115555')
AND
(hist.cycle_end_date = '2/29/2016')