SQL Query With Row_Number, order by and where clause

Question

I have the following SQL query:

select
     ID, COLUMN1, COLUMN2
from
     (select ID, COLUMN1, COLUMN2, row_number() over (order by 2 DESC) NO from A_TABLE)
whe         


        

Answer 1

To answer your first question: Don't use a column number in your order by clause, but use the column name. I don't fully understand your second question, because adding a WHERE in your most inner SELECT should do the trick:

select ID
,      COLUMN1
,      COLUMN2
from  (select ID
       ,      COLUMN1
       ,      COLUMN2
       ,      row_number() over (order by COLUMN1 DESC) NO
       from   A_TABLE
       where  COLUMNX LIKE '%SOME VALUE%'
      )
where  NO between 0 and 100

P.S. (to willcodejavaforfood) I think using row_number() is better when you want the rows to be ordered. It saves an inner view (big win for readability).