if((isnull(@value,''))='')
I want to know whether the above piece of code works in checking if the variable is null or empty.
Solution
Yes, that code does exactly that.
You can also use:
if (@value is null or @value = '')
Edit:
With the added information that @value is an int value, you need instead:
if (@value is null)
An int value can never contain the value ''.
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