+3
I have two tables, they have the unique ID to compare with each other. There is another column called year in both tables.
I am hoping to find records in table2 with the same ID in table1 and then compare the 'year' attribute, only keep the latest one.
Which transformer should I use? The feature joiner can find all records in table 2, but it can't dynamically decide which one to keep.
+33
One way to do this is using the StatisticsCalculator. Group by ID, max Year.
+3
One way to do this is using the StatisticsCalculator. Group by ID, max Year.
Thanks for your help. It works perfectly.
+21
You could also use a sorter followed by a duplicatefilter
Sort on Year in Descending order, then a duplicatefilter with the Key attribute set to ID. The features with the latest year will exit via the unique port
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