where x > sysdate - 18/24

hth
connor

 --- Johan Muller <[EMAIL PROTECTED]> wrote: > I
need a where clause to ACCURATELY (down to the
> second) calculate the
> previous 24 hours when a query is run and bump the
> time by 6 hours
> (event_date is based on GMT). The default date
> format has been set to
> 'SYYYY-MM-DD HH24:MI:SS','NLS_CALENDAR=GREGORIAN'.
> 
> I've tried the following:
> 
> " where event_date >
> (to_date(substr(sysdate,0,22),'YYYY/MM/DD
> HH24:MI:SS')
> + 6/24) - 1".
> 
> Any ideas?
> 
> -- 
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> -- 
> Author: Johan Muller
>   INET: [EMAIL PROTECTED]
> 
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=====
Connor McDonald
http://www.oracledba.co.uk (mirrored at 
http://www.oradba.freeserve.co.uk)

"Some days you're the pigeon, some days you're the statue"

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