In the database query, the results are usually limited to lines with specific characteristics, such as the maximum or minimum value in specific columns. In Oracle SQL, you can use the analysis function (such as Rank (), Dense_rank (), or Row_number ()) to achieve this purpose.

Analysis functions like Rank () and Dense_rank () allocate a level to each line according to the specified sort. To retrieve the top 5 maximum value in the column, you can use the following query format:

Select * From (from (from (from (from (from Select , RANK () Over (Order by Desc) as RNK From Cure Where rnk

SELECT *
FROM (
  SELECT , RANK() OVER (ORDER BY  DESC) AS rnk
  FROM 
)
WHERE rnk 

SELECT *
FROM (
  SELECT , ROW_NUMBER() OVER (ORDER BY  DESC) AS rnk
  FROM 
)
WHERE rnk