or (sysdate - 18/24) > -----Original Message----- > From: Mercadante, Thomas F [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, April 09, 2002 9:08 AM > To: Multiple recipients of list ORACLE-L > Subject: RE: SQL : where clause to include data for the previous 24 > hours > > > Johan, > > There is no need to convert sysdate to a string and back to a > data. I'm not > sure what you mean by "calculate the previous 24 hours when > a query is run > and bump the time by 6 hours". > > It looks like you are trying to retrieve all records that > have a date/time > within the last 18 hours - is this correct? if so, then your > query would > be: > > where event_date > (sysdate + 6/24) - 1 > > The default date format really has nothing to do with how the > dates are > stored within the database - they are all stored the same > way. This means > you can do simple date math like above. > > Hope this is what you are looking for. > > Tom Mercadante > Oracle Certified Professional > > > -----Original Message----- > Sent: Tuesday, April 09, 2002 8:13 AM > To: Multiple recipients of list ORACLE-L > > > 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] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Mercadante, Thomas F > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Glenn Travis INET: [EMAIL PROTECTED]
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