CREATE procedure sp_ZipCode_Count
( @Array varchar(1000),
@Separator char(1) ) 
AS
set nocount on
-- @Array is the array we wish to parse
-- @Separator is the separator charactor such as a comma
declare @separator_position int -- This is used to locate each separator character
declare @array_value varchar(5) -- this holds each array value as it is returned

-- For my loop to work I need an extra separator at the end. I always look to the
-- left of the separator character for each array value
set @array = @Array + @Separator

-- Loop through the string searching for separator characters
while patindex('%' + @separator + '%' , @array) <> 0 
begin

-- patindex matches the a pattern against a string
select @separator_position = patindex('%' + @separator + '%' , @array)
select @array_value = left(@array, @separator_position - 1)

-- This is where you process the values passed.
-- Replace this select statement with your processing
-- @array_value holds the value of this element of the array
select Array_Value = @array_value -- ???
IF len(@array_value) > 0 
begin
  SELECT count(*) FROM customer
  WHERE zip in (@array_value)
end
-- This replaces what we just processed with and empty string
select @array = stuff(@array, 1, @separator_position, '')
--end
end
set nocount off
GO