Oracle-L: Implicit Date conversion problem

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Tue, 29 Oct 2002 05:54:04 -0800
Message-ID: <F001.004F6185.20021029055404@fatcity.com>

We have a query (please don't ask me why it is written this way)

--Doesn't work:
select ea1.ep_number, ea1.est_dt, veas.est_dt from (select a.ep_number, ea.est_dt

          from v_episode_avail_summary_break a, episode_airings ea
         where a.ep_number = ea.ep_number
           and ea.est_dt between '20-Dec-02' and '01-Jan-03'
         group by a.ep_number, ea.est_dt) veas, 
       episode_airings ea1

where veas.ep_number = ea1.ep_number
and ea1.est_dt between '20-Dec-02' and '01-Jan-03'

vs.

--Works:
select ea1.ep_number, ea1.est_dt, veas.est_dt from (select a.ep_number, ea.est_dt

          from v_episode_avail_summary_break a, episode_airings ea
         where a.ep_number = ea.ep_number
           and ea.est_dt between '20-Dec-02' and '01-Jan-03'
         group by a.ep_number, ea.est_dt) veas, 
       episode_airings ea1

where veas.ep_number = ea1.ep_number
and ea1.est_dt between trunc(to_date('20-Dec-02','DD-Mon-YY'))

                     and trunc(to_date('01-Jan-03','DD-Mon-YY'))

Also if we comment "and ea1.est_dt between '20-Dec-02' and '01-Jan-03'" the non-working query runs fine.
Does anyone know what could be wrong? The est_dt is a date column. This is 9201 ...

Raj

Rajendra Jamadagni MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.

QOTD: Any clod can have facts, but having an opinion is an art!

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Author: Jamadagni, Rajendra
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Received on Tue Oct 29 2002 - 07:54:04 CST