Is there is any Performance issue while using ISNULL() in SQL Server?

Question

I am using ISNULL in MS SQl server 2008, since my table is too huge, whether using of ISNULL may cause any thing to the performance ?.

Than

Answer 1

It depends on how you are useing it, but you can build execution plans in the both cases (with ISNULL() and without it) and compare the results.