SQL Divide by Zero error

If you use a simple select on those fields are any zero? Since you have multiple divisions you are trying removing some parts to see which parts of the expression are returning zero. My guess is this part
nullif ((inventory_supplier.cost - CONVERT(INT,inventory_supplier.supplier_sort_code)) / CONVERT(INT,inventory_supplier.supplier_sort_code) ,0)

The issue is some inventory_supplier.supplier_sort_code has 0.  The part your talking about was my attempt to fix the divide by zero issue.

First of all: Use alias names and a CTE to make your statement better readable.

Second: Post a concise and complete example. This includes table DDL and sample data INSERT statements. Otherwise we can only guess. Posting a question without is imho annoying behavior.

 

WITH Converted AS
	(
		SELECT	IS.cost,
			CONVERT(INT, IS.supplier_sort_code) AS supplier_sort_code,
			IS.cost - CONVERT(INT, IS.supplier_sort_code) AS CostCostDiff
		FROM	inventory_supplier IS
	)
	SELECT	C.CostCostDiff / C.supplier_sort_code / NULLIF(C.CostCostDiff / C.supplier_sort_code ,0) AS last_new_cost_diff 
	FROM	Converted C;

Select allOpen in new window

Now you see that your using C.supplier_sort_code twice as divisor. So you need to handle this case. And as you're using C.CostCostDiff in the NULLIF clause, a 0 as this difference may propagate.

And last but not least: What are you trying to do?

Case statement worked perfect for this.

Thanks for the split.  Good luck with your project.  -Jim

Its only fair since they were posted practically the same time.  Thanks for the help!