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Update Hint.txt #15

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4 changes: 4 additions & 0 deletions Window Functions/Chapter6/Bug hunt/Hint.txt
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Original file line number Diff line number Diff line change
@@ -1 +1,5 @@
Correct me if I am worng, but my thoughts are following:

The bug lies down when try to get the is_first_queter in case `GROUP BY species`.
In this case, we want to get the querter_start date for each specie, thus there should be
a `PARTITION BY species` after `LAG(quarter_start`