Row with max date

Question

Hi guys,
Quick question which I would appreciate some help with. I am currently querying a table with multiple rows but I only want it to return 1 row (the one which was created most recently) ie. the one with the max date_Created field.
I was thinking I could do this:
Select *
from table
where date_created = max(date_created)
but you will probably know I cant do this. I know I can partition etc but since I am calling this as a cursor from oracle forms I cant use partition, can anyone help me out please?
Thanks.

Answer 1

Hi,
Here's one way:
WITH     got_r_num     AS
     SELECT     t.*
     ,     ROW_NUMBER () OVER (ORDER BY  date_created  DESC)
              AS r_num
     FROM    table_x  t
SELECT     *   -- or list all columns except r_num
FROM     got_r_num
WHERE     r_num     = 1
786733 wrote:Hi guys,
Quick question which I would appreciate some help with. I am currently querying a table with multiple rows but I only want it to return 1 row (the one which was created most recently) ie. the one with the max date_Created field.
I was thinking I could do this:
Select *
from table
where date_created = max(date_created)
but you will probably know I cant do this. You can do something pretty close:
SELECT     *
FROM     table_x
WHERE     date_created = (
                     SELECT  MAX (date_created)
                  FROM        table_x
;However, if there is a tie (that is, 2 or more rows that have exactly the same date_created, and none later), then this will return all of them, and you said you only want 1 row.
I know I can partition etc but since I am calling this as a cursor from oracle forms I cant use partition, can anyone help me out please?Sorry, I don;t undersand what you're saying about partitions.
If there's something that you can do in, say, SQL*Plus, but not in Forms, then hre's probably a way to "hide" it (in a view, perhaps) so that the part Forms can't hande isn't being done in Forms.