Oracle-L: RE: Return the first row only

From: Krishnaswamy, Ranganath <Ranganath.Krishnaswamy_at_blr.hpsglobal.com>
Date: Wed, 29 Jan 2003 05:29:07 -0800
Message-ID: <F001.0053D264.20030129052907@fatcity.com>

Hi List,

I found the answer to my query myself and here goes the solution:

select x.* from (select 'shipment' table_name,ce.display_name,st.timestamp, sequence
from shipment_timestamp st, customer_event ce, xm_field xm where shipment_id = 10402344721477

and ce.CUSTOMER_MOT_ID = 1040130035205
and xm.field_id = ce.field_id
and st.event_id = xm.event_id

union
select 'container' table_name,ce.display_name,sct.timestamp, sequence from shipment_container_timestamp sct, customer_event ce, xm_field xm where shipment_id = 10402344721477
and ce.CUSTOMER_MOT_ID = 1040130035205
and xm.field_id = ce.field_id
and sct.event_id = xm.event_id
union
select 'order' table_name,ce.display_name,ot.timestamp, sequence from order_timestamp ot, shipment_order so,customer_event ce, xm_field xm where so.shipment_id = 10402344721477

and so.order_id = 2
and ot.shipment_order_id = so.shipment_order_id  
and ce.CUSTOMER_MOT_ID = 1040130035205
and xm.field_id = ce.field_id
and ot.event_id = xm.event_id

) x where x.sequence = ( select max(sequence) from (select 'shipment' table_name,ce.display_name,st.timestamp, sequence from shipment_timestamp st, customer_event ce, xm_field xm where shipment_id = 10402344721477

and ce.CUSTOMER_MOT_ID = 1040130035205
and xm.field_id = ce.field_id
and st.event_id = xm.event_id

and so.order_id = 2
and ot.shipment_order_id = so.shipment_order_id  
and ce.CUSTOMER_MOT_ID = 1040130035205
and xm.field_id = ce.field_id
and ot.event_id = xm.event_id))

My apologies for posting such a long query to the forum.

Thanks and Regards,

Ranganath

> -----Original Message-----
> From: Krishnaswamy, Ranganath
> Sent: Wednesday, January 29, 2003 5:59 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Return the first row only
>
> Hi List,
>
> I have the below query which returns 13 records. In this I want to
> display
> only the 1st row. Is it possible to do this through rownum or any other
> function or pseudo column? If so, please let me know the same. Any help
> in
> this regard is very much appreciated.
>
> select 'shipment' table_name,ce.display_name,st.timestamp, sequence
> from shipment_timestamp st, customer_event ce, xm_field xm
> where shipment_id = 10402344721477
> and ce.CUSTOMER_MOT_ID = 1040130035205
> and xm.field_id = ce.field_id
> and st.event_id = xm.event_id
> union
> select 'container' table_name,ce.display_name,sct.timestamp, sequence
> from shipment_container_timestamp sct, customer_event ce, xm_field xm
> where shipment_id = 10402344721477
> and ce.CUSTOMER_MOT_ID = 1040130035205
> and xm.field_id = ce.field_id
> and sct.event_id = xm.event_id
> union
> select 'order' table_name,ce.display_name,ot.timestamp, sequence
> from order_timestamp ot, shipment_order so,customer_event ce, xm_field xm
> where so.shipment_id = 10402344721477
> and so.order_id = 2
> and ot.shipment_order_id = so.shipment_order_id
> and ce.CUSTOMER_MOT_ID = 1040130035205
> and xm.field_id = ce.field_id
> and ot.event_id = xm.event_id order by sequence desc
>
> Thanks and Regards,
>
> Ranganath
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Krishnaswamy, Ranganath
> INET: Ranganath.Krishnaswamy_at_blr.hpsglobal.com
>
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WARNING: The information in this message is confidential and may be legally privileged. It is intended solely for the addressee. Access to this message by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, or distribution of the message, or any action or omission taken by you in reliance on it, is prohibited and may be unlawful. Please immediately contact the sender if you have received this message in error. Thank you.

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Krishnaswamy, Ranganath
  INET: Ranganath.Krishnaswamy_at_blr.hpsglobal.com

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Received on Wed Jan 29 2003 - 07:29:07 CST

RE: Return the first row only - Solved