SQL Server PRINT SELECT (Print a select query result)?

You know, there might be an easier way but the first thing that pops to mind is:

Declare @SumVal int;
Select @SumVal=Sum(Amount) From Expense;
Print @SumVal;

You can, of course, print any number of fields from the table in this way. Of course, if you want to print all of the results from a query that returns multiple rows, you'd just direct your output appropriately (e.g. to Text).

If you want to print multiple rows, you can iterate through the result by using a cursor. e.g. print all names from sys.database_principals

DECLARE @name nvarchar(128)

DECLARE cur CURSOR FOR
SELECT name FROM sys.database_principals

OPEN cur

FETCH NEXT FROM cur INTO @name;
WHILE @@FETCH_STATUS = 0
BEGIN   
PRINT @name
FETCH NEXT FROM cur INTO @name;
END

CLOSE cur;
DEALLOCATE cur;

If you're OK with viewing it as XML:

DECLARE @xmltmp xml = (SELECT * FROM table FOR XML AUTO)
PRINT CONVERT(NVARCHAR(MAX), @xmltmp)

While the OP's question as asked doesn't necessarily require this, it's useful if you got here looking to print multiple rows/columns (within reason).

set @n = (select sum(Amount) from Expense)
print 'n=' + @n