Multiple Effective Dates (latest date)

[aldeb]

Below is the code I have for a query. This query shows Processes, Operations, etc. Due to multiple Effective_ (Effective_ stands for Date) The Operations show multiple times. What I would like to do is have each Operation show only one time based on the latest Effective_ i.e. If Operation START-UP is listed three times due to three effective dates 2007-01-04, 2007-01-08 & 2007-01-17 I would only like to the the one associated with the 2007-01-17. Is there a way to accomplish this in my query?

SELECT ASSYROP.PROCESS, ASSYROP.OPERATION, ASSYROP.OPERATION_, ASSYWC1.PROCESS_AT, ASSYROP.OPERATIO_1, ASSYROP.EFFECTIVE_
FROM ASSYROP INNER JOIN ASSYWC1 ON ASSYROP.OPERATION = ASSYWC1.OPERATION
GROUP BY ASSYROP.PROCESS, ASSYROP.OPERATION, ASSYROP.OPERATION_, ASSYWC1.PROCESS_AT, ASSYROP.OPERATIO_1, ASSYROP.EFFECTIVE_
ORDER BY ASSYROP.PROCESS, ASSYROP.OPERATION, ASSYROP.EFFECTIVE_;

 

[Michael J Ross]

Use max effective date?

 

[aldeb]

Thanks,

How do I do that?

 

[Michael J Ross]

Make it atotals query by clicking the sigma icon in the design view of the query, choose group by for the other fields in the query and Max for your effective date.

see attached