How to pass NULL to a optional parameter and it not be interpreted as a missing parameter
问题 I have a SQL Server stored procedure that updates a large table. Because of its size, most parameters are optional. Most recommendations for setting the default of my optional parameters is to set them to NULL. However, my problem is that NULL is a legitimate update parameter value so I'm trying to figure out how to handle detect the difference between a NULL that is passed vs. a NULL that exists due to a missing optional parameter. One solution I've seen is to set the optional parameter's