The approx SQL produced (I had to try this it’s very ingenious!) related to the OP:
/*
* Disclaimer!!!
* This is not a real query being executed, but a simplified version for general vision.
* Executing it with any other tool may produce a different result.
*/
select
([Ice].entry(ListRowGen.Calculated_RowNum, @ListOfParams , ',')) as [Calculated_ParamsList],
[Part].[Company] as [Part_Company],
[Part].[PartNum] as [Part_PartNum]
from (select top (20)
[PartTran].[Company] as [PartTran_Company],
(ROW_NUMBER() OVER(ORDER BY PartTran.TranNum)) as [Calculated_RowNum]
from Erp.PartTran as PartTran) as ListRowGen
inner join Erp.Part as Part on
Part.Company = ListRowGen.PartTran_Company
and ( Part.PartNum like '%'+[Ice].entry(ListRowGen.Calculated_RowNum, @ListOfParams , ',')+'%' )
Very cool!