Error during matching record - Urgent

Question

Hi All:
with below sample data
============================
GKEY             EQ_NBR             PERFORMED            TSERV_ID
=================================================================
43593981     ECMU1715182     23-Jun-2008 2:04:56 PM     EXM
43593983     ECMU1715182     23-Jun-2008 2:13:53 PM     YARD SHIFT
43593984     ECMU1715182     23-Jun-2008 3:26:33 PM     YARD SHIFT
43593985     FCIU8043523     23-Jun-2008 3:47:15 PM     YARD SHIFT
43593987     FCIU8043523     23-Jun-2008 3:50:15 PM     EXM
43593989     FCIU8043523     23-Jun-2008 3:52:26 PM     YARD SHIFT
I want to display those records having YARD SHIFT after EXM
If there are more than one YARD SHIFT records THEN the very first YARD SHIFT after EXM
should be display where se.performed BETWEEN trunc(sysdate-120/1440,'mi')
                    AND trunc(sysdate,'mi')
I wrote following query:
select
gkey, se.eq_nbr, se.performed, se.tserv_id
from service_events se
where se.performed BETWEEN trunc(sysdate-120/1440,'mi')
                    AND trunc(sysdate,'mi')
  and se.tserv_id in ('YARD SHIFT')
  and exists (select 1 from service_events se1
                  where se1.tserv_id in ('EXM')
                    and se1.equse_gkey = se.equse_gkey
                    and se.performed > se1.performed
  and se.eq_nbr = 'ECMU1715182'
which display following result
GKEY             EQ_NBR             PERFORMED            TSERV_ID
=================================================================
43593983     ECMU1715182     23-Jun-2008 2:13:53 PM     YARD SHIFT
43593984     ECMU1715182     23-Jun-2008 3:26:33 PM     YARD SHIFT
This is wrong, I need following record to be display
43593983     ECMU1715182     23-Jun-2008 2:13:53 PM     YARD SHIFTNo record should be display if performed does not exist between trunc(sysdate-120/1440,'mi')
AND trunc(sysdate,'mi')
Thanks
Hassan

Answer 1

Boneist will be well aware that you have more than 5
records. The "SELECT ... FROM DUAL UNION ...."
'section' of her example is used to create a
representative set of sample data with which she can
work (i.e. the same as the sample data that you
supplied). It is similar to creating a table
and inserting rows, but it's quicker, easier, cleaner
and cooler.Looks like I'll need to add a "-- start of test data setup" at the beginning to make it even clearer!
P.S. One little thing, PLEASE try to avoud use of the
word "urgent" in your posts, it is generally regarded
as being a bit rude :) (you may have noticed
Boneist's alteration of the title.
CheersI was going for subtly sarcastic... did it work?! *{;-)