Joining temporary and regular tables

Question

Can you create join between a temporary table and a permanent one?  I'm not sure how that would work. 

Answer 1

You can join a temportary table to a permanent table like this:
Specific to SSRS this will not supply a valid dataset in SSRS however.  If you add this as your query in your dataset in your report project:
USE [tempdb]  
CREATE TABLE #temp(  
Col1    INT PRIMARY KEY,  
nm      VARCHAR(100)  
INSERT #temp 
SELECT ContactID,  
       FirstName + ' ' + LastName AS nm  
FROM AdventureWorks.Person.Contact   
SELECT nm,  
       Col1,  
       LoginID  
FROM #temp AS c JOIN 
[AdventureWorks].[HumanResources].[Employee] AS e  
ON c.Col1 = e.[ContactID]  
DROP TABLE #temp 
But if you attempt to use this as a datasource in a report project you will receive an error.
Hope this helps