sql - In SSRS Report Builder, how to only show something when it's the last row of a group? -

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i trying build report show specific notes below last line in grouping, grouping may part of data set.

quick example: have 2 orders 3 rows of information each. after each row, have row hidden, when visible displays notes. these 2 orders separated "line number". data set has 6 rows, need distinguish if row last row of line number, row can shown.


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