Creating a new secondary index on table - response (3) by pawan0608

You Can use SQL like this
 
SEL * FROM dbc.DBQLObjTbl
WHERE ObjectType = 'Idx'
AND ObjectNum = 4 /* or whatever is your secondary index number 8, 12, 16 ... */
AND ObjectDatabaseName = <your database name>
AND ObjectTableName = <your table name>
 
You will see that  'TypeofUse'  have value '2' - Accessed during query processing
 
you can join this Table with DBQLogTbl table or other DBQL tables based on ProcID and QueryId to see other information about the query like SQL, resource usage, processing time, step time etc.