Walk the string

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declare @S varchar(20)
set @S = '122,112,311,411,533'
declare @projectid int
while len(@S) > 0
begin
  print left(@S, charindex(',', @S+',')-1)
  set @projectid = left(@S, charindex(',', @S+',')-1)
  set @S = stuff(@S, 1, charindex(',', @S+','), '')
  print @S
end

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