Is There any difference in Set @Var=ColmnName and Select @Var =Column from Table. I am using it in SSIs for Dynamic Packages

Question

hey there, Kindly elaborate me the difference Between Set and Select clause while Providing value to a Variable or Even  a  Column.
    Declare @var nvarchar(Max)
    Set @var= (Select TestName+ cAst(TestId as nvarchar) from TblTest where TestID=1)
    Insert into TblTest(TestName)
    Values (@var)
    Declare @var nvarchar(Max)
    Select @var= (Select TestNAme + Cast(TestId as Nvarchar(MAx)) from TblTest Where TestID=1)
    Insert into TblTest(TestName)
    Values(@var)
Values and result I am getting is Same in Both.
But just wondering if there is any Difference. and if Any which Should I prefer.
And Which one uses less Resources.

Answer 1

I like this article
http://vyaskn.tripod.com/differences_between_set_and_select.htm
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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