SQL Server : connect by level for DATE type with union - sql

Question

I've found basic answer for replacing the Oracle's "CONNECT BY LEVEL" in this question but my case is little bit more complicated:
Basically things that I want to replace looks like this:
...
UNION ALL
Select
adate, 'ROAD' as TSERV_ID, 0 AS EQ_NBR
from
(SELECT
to_date(sysdate - 732,'dd/mm/yy') + rownum -1 as adate, rownum
FROM
(select rownum
from dual
connect by level <= 732)
WHERE rownum <= 732)
UNION ALL
Select
adate, 'PORTPACK' as TSERV_ID, 0 AS EQ_NBR
from
(SELECT
to_date(sysdate - 732,'dd/mm/yy') + rownum -1 as adate, rownum
FROM
(select rownum from dual connect by level <= 732)
WHERE rownum <= 732)
UNION ALL
....
Now, the single dual connect is easy, even if this is apparently not very efficient method
WITH CTE AS (
SELECT dateadd(day,-720,CONVERT (date, GETDATE())) as Datelist
UNION ALL
SELECT dateadd(day,1,Datelist)
FROM CTE
WHERE datelist < getdate() )
SELECT *,'ROAD' as Tserv_ID , 0 as EQ_NBR FROM CTE
option (maxrecursion 0)
repeating the union is hard because I get an error:
Incorrect syntax near the keyword 'with'. If this statement is a common table expression, an xmlnamespaces clause or a change tracking context clause, the previous statement must be terminated with a semicolon.
There are more parts of this union that I've provided here; I've tried to use the "WITH" only at start but no luck. Am I missing something obvious here?
EDIT: There is of course big question WHY I am even trying to do such thing: Personally, I wouldn't, but at the other end of the query there is a huge Crystal Report that runs once every month and which accepts data in this particular format. End of the FULL query's output is something like
3 columns of data
3 Columns of data
...
Currentdate-732,"ROAD",0
Currentdate -731,"ROAD",0
...
Currentdate, "ROAD,"0"
Currentdate -732, "PORTPAK", 0
Currentdate -731, "PORTPAK", 0
etc.

Answer 1

Are you trying to do:
WITH CTE1 AS (...),
CTE2 AS (...)
SELECT stuff FROM CTE1
UNION ALL
SELECT stuff FROM CTE2;
? This is a common challenge, I guess it is not very discoverable that in order to use more than one CTE, you just separate them with a comma.
That all said, it seems like you are just trying to generate a series of dates. A recursive CTE (never mind a series of many of them) is not the most efficient way to do this. Instead of telling us you want to replace CONNECT BY LEVEL and showing us the syntax you've tried, why don't you just show or describe the output you want? We've already got an appreciation that you've tried something on your own (thanks!) but we'd rather give you an efficient solution than bridging the gap to an inefficient one.
As an example, here is something that requires a lot less redundant code, and ( think gives you what you're after:
DECLARE #n INT = 722, #d DATE = CURRENT_TIMESTAMP;
;WITH v AS (SELECT v FROM (VALUES('ROAD'),('PORTPACK')) AS v(v)),
n AS (SELECT TOP (#n) n = ROW_NUMBER() OVER (ORDER BY number)
FROM master.dbo.spt_values ORDER BY n)
SELECT Datelist = DATEADD(DAY, 2-n.n, #d), Tserv_ID = v.v, EQ_NBR = 0
FROM n CROSS JOIN v
ORDER BY Tserv_ID, Datelist;