Create table variable from pivot results - sql-server

Question

Is it possible to create table variable from pivot results?
My pivot query:
SELECT #QUERY = 'SELECT USER_KEY, ' + #COLDEPSUMMARY + '
FROM CAUSDE_TAS
PIVOT
(
SUM(USDE_HSU)
FOR DEPA_KEY IN (' + #COLDEPARTMENTS + ')
) PIVOT_LOCATIONS
WHERE USDE_DAT >= ''' + format(#dDateFrom, 'MM.dd.yyyy') + ''' AND USDE_DAT <= ''' + format(#dDateTo, 'MM.dd.yyyy') + '''
AND USER_KEY IN (' + #USERS_STR + ')
GROUP BY USER_KEY'
#COLDEPSUMMARY AND #COLDEPARTMENTS are dynamically generated and are looking like this (there is around 70 columns):
#COLDEPSUMMARY:
SUM([120000003]),SUM([120000002]),SUM([140000001]),SUM([120000005]), ...
#COLDEPARTMENTS:
[120000003],[120000002],[140000001],[120000005], ...
Main reason why I want to create table variable from pivot table is that number of columns in pivot is dynamic - it can vary and there are a lot of columns (around 70).
UPDATE
As Jeremy suggested I've included INTO #tmp in dynamic query, so it looks like this:
SELECT #QUERY = 'SELECT USER_KEY, ' + #COLDEPSUMMARY + '
INTO #tmp
FROM CAUSDE_TAS
PIVOT
(
SUM(USDE_HSU)
FOR DEPA_KEY IN (' + #COLDEPARTMENTS + ')
) PIVOT_LOCATIONS
WHERE USDE_DAT >= ''' + format(#dDateFrom, 'MM.dd.yyyy') + ''' AND USDE_DAT <= ''' + format(#dDateTo, 'MM.dd.yyyy') + '''
AND USER_KEY IN (' + #USERS_STR + ')
GROUP BY USER_KEY'
If I just run the query with EXECUTE(#query), report is saying that more than 200 rows are affected. But, query:
select * from #tmp
is returning:
Invalid object name '#tmp'.
If I extract dynamic query and run it manually, all is good - #tmp is created and I can query it. (I extracted query with SELECT #query. Than I've just copy-pasted that selection into another window).
Dynamic query after extraction looks like this:
SELECT USER_KEY, SUM([120000003]),SUM([120000002]),SUM([140000001])
INTO #tmp
FROM CAUSDE_TAS
PIVOT
(
SUM(USDE_HSU)
FOR DEPA_KEY IN ([120000003],[120000002],[140000001])
) PIVOT_LOCATIONS
WHERE USDE_DAT >= '09.19.2016' AND USDE_DAT <= '03.18.2017'
AND USER_KEY IN (100000002,100000004,100000006,100000008)
GROUP BY USER_KEY
I don't understand why #tmp is not created if I just run EXECUTE(#Query)?