I am trying to identify which concepts have newly appeared at which start_period.
Kindly have a look at the snapshot which covers both the front (table box) and the back end script.
Ex: The "zein" concept though it is OLD it is marked as NEW. Kindly help . and the backend script.
I assume your issue is because you create your Start_Period values as text values, then sort ascending in your second load, while you probably assume a chronological sort. Try
Monthname(Start_Period) as Start_Period
That worked like charm.
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