Nice article. You can actually drop the cursor completely and replace with the following

DECLARE @fields nvarchar(4000)

DECLARE @values nvarchar(4000)

SET @fields = ''

SET @values = ''

SELECT @fields = @fields+...

It is also possible to do the query with just left joins,

SELECT a.PersonID, a.Version , a.dedate,

[is improper] = CASE WHEN MAX(c.version) IS NOT...