merging the results of a SQL query - sql-server

Question

i am trying to merge the results of this query all data in one list. 'Union' didnt help...
any ideas ?
DECLARE #cnt INT = 0
DECLARE #SQLQuery AS NVARCHAR(500)
DECLARE #items AS VARCHAR(500)
DECLARE #stline AS VARCHAR(500)
while #cnt < 101
begin
set #items = 'LG_0' + convert(nvarchar(3),#cnt) + '_ITEMS'
set #stline = 'LG_0' + convert(nvarchar(3),#cnt) + '_01_STLINE'
if (OBJECT_ID (#items) is not null and OBJECT_ID(#stline) is not null )
set #SQLQuery = 'SELECT
ITM1.CODE, itm1.NAME, max (stl.date_) [latest date] , price as [latest price], '+ convert(nvarchar(3),#cnt) + ' as [proje kodu]
FROM ' + #items + ' ITM1 INNER JOIN ' + #stline + ' STL
ON ITM1.LOGICALREF = STL.STOCKREF
WHERE PRICE > 0
AND TRCODE = 1
AND CANCELLED = 0
AND INVOICEREF > 0
group by code, name, stl.DATE_ , price
'
exec (#SQLQuery)
set #cnt = #cnt +1
end
the result is this :
but i want them all union-ed... (sorry for the mostly code issue, i have to add here more typing)

Answer 1

I don't know why UNION didn't work for you, but the following should work:
DECLARE #cnt INT = 0
DECLARE #SQLQuery AS NVARCHAR(MAX) = ''
DECLARE #items AS VARCHAR(500)
DECLARE #stline AS VARCHAR(500)
while #cnt < 101
begin
set #items = 'LG_0' + convert(nvarchar(3),#cnt) + '_ITEMS'
set #stline = 'LG_0' + convert(nvarchar(3),#cnt) + '_01_STLINE'
if (OBJECT_ID (#items) is not null and OBJECT_ID(#stline) is not null )
set #SQLQuery = #SQLQuery + 'SELECT
ITM1.CODE, itm1.NAME, max (stl.date_) [latest date] , price as [latest price], '+ convert(nvarchar(3),#cnt) + ' as [proje kodu]
FROM ' + #items + ' ITM1 INNER JOIN ' + #stline + ' STL
ON ITM1.LOGICALREF = STL.STOCKREF
WHERE PRICE > 0
AND TRCODE = 1
AND CANCELLED = 0
AND INVOICEREF > 0
GROUP BY code, name, stl.DATE_ , price
UNION ALL
'
set #cnt = #cnt +1
end
-- SUBSTRING to remove last UNION ALL
SELECT #SQLQuery = SUBSTRING(#SQLQuery, 1, LEN(#SQLQuery) - 18)
-- For debugging purposes
-- PRINT #SQLQuery
exec (#SQLQuery)
I couldn't test it, but you can comment the exec, and uncomment the PRINT to see what query is being generated. It makes debugging dynamic SQL a whole lot easier.
The idea behind this code: first the UNION ALL query is being build, based on your conditions. Finally the last UNION ALL is removed, then the code can be executed.

Answer 2

DECLARE #cnt INT = 0
DECLARE #SQLQuery AS NVARCHAR(max)
DECLARE #items AS VARCHAR(500)
DECLARE #stline AS VARCHAR(500)
set #SQLQuery =''
while #cnt < 101
begin
set #items = 'LG_0' + convert(nvarchar(3),#cnt) + '_ITEMS'
set #stline = 'LG_0' + convert(nvarchar(3),#cnt) + '_01_STLINE'
if (OBJECT_ID (#items) is not null and OBJECT_ID(#stline) is not null )
set #SQLQuery = #SQLQuery + 'SELECT
ITM1.CODE, itm1.NAME, max (stl.date_) [latest date] , price as [latest price], '+ convert(nvarchar(3),#cnt) + ' as [proje kodu]
FROM ' + #items + ' ITM1 INNER JOIN ' + #stline + ' STL
ON ITM1.LOGICALREF = STL.STOCKREF
WHERE PRICE > 0
AND TRCODE = 1
AND CANCELLED = 0
AND INVOICEREF > 0
GROUP BY code, name, stl.DATE_ , price
UNION ALL
'
set #cnt = #cnt +1
end
-- SUBSTRING to remove last UNION ALL
--PRINT len(#SQLQuery)
set #SQLQuery = left ( #SQLQuery , len(#SQLQuery)-18)
--PRINT len(#SQLQuery)
-- print #SQLQuery
-- For debugging purposes
-- PRINT #SQLQuery
exec (#SQLQuery)