Hello Katherine,
I don't really understand if you want to see the SQL Selection of this query or you want to correct the values/results.
Well, you can supress the result in run-time. Just clcik with right button over a characteristic while executing the query, on properties you will see some as "Supress result row". Will supress for this char.
regarding the missing data.;.. Maybe the infoprovider is empty.
Use transaction LISTCUBE, select the infoprovider where this query was created.
It is a little complex to use, however, doing it right, you will be able to see if yout data was loaded or not for this cube.
Regarding to see the SQL statement of your query:
Go to transaction RSRT2 > HTML Mode
Select your query
Click on Execute and Debug.
Select the option "Display SQL/BIA Query" and execute. There you will see what this query is bringing from, your database.
I hope it helps.
Best Regards,
Edward John