Update field in Table when conditions fulfilled in MS Access 2013 - ms-access

Question

I have two tables in MS Access 2013.
Table of SERVICE:
(ID is the primary key)
ID PART_ID SERVICE_DATE REMARK WITHDRAWN
1 A0001 01/04/2014
2 A0002 01/04/2014
3 A0003 01/04/2014 SCRAP
4 A0004 01/04/2014
5 A0001 01/05/2014
6 A0002 01/05/2014
Table of WITHDRAW:
(ID is the primary key)
ID PART_ID DRAW_DATE
1 A0001 02/04/2014
2 A0002 02/04/2014
3 A0001 02/05/2014
I'd like to put a "NO" into the field of WITHDRAWN in Table of SERVICE to indicate the part has not been withdraw yet, if:
Part is first time in Table of SERVICE and never appear in Table of WITHDRAW.
Part appears few times in Table of SERVICE and Table of WITHDRAW, already serviced this time, not withdraw yet.
Part is not under category of "SCRAP".
Targetted Result:
Table of SERVICE
ID PART_ID SERVICE_DATE REMARK WITHDRAWN
1 A0001 01/04/2014
2 A0002 01/04/2014
3 A0003 01/04/2014 SCRAP
4 A0004 01/04/2014 NO
5 A0001 01/05/2014
6 A0002 01/05/2014 NO
But I just know how to write the code for the first condition:
UPDATE SERVICE LEFT JOIN WITHDRAW ON SERVICE.PART_ID = WITHDRAW.PART_ID SET SERVICE.WITHDRAWN = "NO" WHERE WITHDRAW.PART_ID Is Null;
Can somebody amend my code so that I can achieve the targetted result? Thanks!

Answer 1

I think what you are looking for is the following query:
UPDATE service
LEFT JOIN withdraw
ON service.part_id = withdraw.part_id
AND service.service_date <= withdraw.draw_date
SET service.withdrawn = "no"
WHERE withdraw.part_id IS NULL
AND Nz(service.remark, "") <> "scrap";
Your rules where a bit hard to understand, but I think I got it. I threw rule 1 and 2 together as follows:
1.Part is first time in Table of SERVICE and never appear in Table of WITHDRAW.
2.Part appears few times in Table of SERVICE and Table of WITHDRAW, already serviced this time, not withdraw yet.
==> The service_date of the part must be greater than the last withdraw_date for every part.