Elenco separato da virgole in SQL

declare @S varchar(20)
set @S = '1,2,3,4,5'

while len(@S) > 0
begin
  --print left(@S, charindex(',', @S+',')-1)
  exec YourSP left(@S, charindex(',', @S+',')-1)
  set @S = stuff(@S, 1, charindex(',', @S+','), '')
end

Prova su SE Data:Cammina la stringa