Ignoring a NULL parameter in T-SQL

Question

I want to be able to pass in a list of parameters, and ignore the ones which are NULL. So that the query is in effect pretending that the filter isn\'t there and ignoring it

Answer 1

This is the method I typically use. I see no reason for it to be inefficient, as the statement should short-circuit to true if @thing is null, and would therefore not require a table scan. Do you have any evidence that this comparison is slowing your query? If not, I would not worry about it.