Query to find first and last call made by selected number for date range

Question

Hi,
query to find first and last call made by selected number for date range
according to filter:
mobile_no : 989.....
call_date_from : 25-april-2013
call_date_to : 26-april-2013
Please help

Answer 1

Hi,
It sounds like you want a Top-N Query , something like this:
WITH    got_nums   AS
     SELECT     table_x.*     -- or list columns wanted
     ,     ROW_NUMBER () OVER (ORDER BY  call_date      ) AS a_num
     ,     ROW_NUMBER () OVER (ORDER BY  call_date  DESC) AS d_num
     FROM     table_x
     WHERE     mobile_no     = 989
     AND     call_date     >= DATE '2013-04-25'
     AND     call_date     <  DATE '2013-04-26' + 1
SELECT  *     -- or list all columns except a_num and d_num
FROM     got_nums
WHERE     1     IN (a_num, d_num)
;This forum is devoted to the SQL*Plus and iSQL*Plus front ends. This question doesn't have anything to do with any front end, does it? In the future, you'll get better response if you post questions like this in the PL/SQL.
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