Selecting distinct rows - oracle 9 sql

Please see the attached which displays a) the current output and b) the desired output.

This data is looking at a questions and answers given in two electronic forms for two different clients. The question text appears in the QST_DESC column. Any answers given will appear in the AVD_DATA column. If an answer has been provided, the string DATA will appear in the ANV_NAME column.

I would like each question (and answer) row to only appear once for each client- so if the clients question has been answered I would like this row to appear (there will be the text DATA in the ANV_NAME column), if no answer has been provided the row will not have the word DATA in the ANV_NAME column and I would like this row to appear.

I hope this make some sort of sense!  Any help with this is appreciated.

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SujithData ArchitectCommented:
Try this (For 9i)
row_number() over(partition by FIRST_NAME, QST_QSE_ID order by ANV_NAME) rn
from <your table>
where rn = 1

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What key(s) exist in your table? When there is more than one answer for a question which one do you want to return? Do you want to pick one at random or should some rule be applied?
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