thbaig (10/1/2015)
This is the only thing left.Case-1
DECLARE @ProdId varchar(10) = 'Prod1',
@color varchar(max) = NULL, -- Will make it optional and logic will work on all available color for Product.
@size varchar(max) = 'L,S,M,MM'; -- Will consider only provided sizes
Case-2
DECLARE @ProdId varchar(10) = 'Prod1',
@color varchar(max) = 'Black,Blue,bbc' -- Will consider only provided colors
@size varchar(max) = NULL, -- Will make it optional and logic will work on all available sizes for product
Case-3
DECLARE @ProdId varchar(10) = 'Prod1',
@color varchar(max) = NULL, -- Will make it optional and logic will work on all available color for Product.
@size varchar(max) = NULL, -- Will make it optional and logic will work on all available sizes for product
Here is how I would deal with this. I would create a main procedure that receives all your parameters. Then a procedure for each possible path. So for example in Case-1 you would call the procedure that can handle that situation. The code would be very similar to when all parameters are passed except that you would just use a cross join to the ProductColor instead of splitting the parameter. Repeat this for each of your 3 new cases. Case-4 would be the code I already posted. Then you just need a procedure as the traffic controller. Sure you could do that all in a single procedure but you are going to have some serious performance problems. This article from Gail explains the performance benefits of this approach. http://sqlinthewild.co.za/index.php/2009/09/15/multiple-execution-paths/[/url]
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