- where 'current' value of most recent date (31 jan) of maker+model+class = previous 'current' of same maker+model+class , then TRUE
- where 'current' value of most recent date (31 jan) of maker+model+class <> previous 'current' of same maker+model+class , then FALSE
- if FALSE, then compare against previous 'new' value.. if they are the same then TRUE, if not, then FALSE
3 answers
thanks for your reply, see attached.