RE: How to calculate time using SQL

From: Nguyen, David M <david.m.nguyen_at_xo.com>
Date: Mon, 01 Apr 2002 09:42:17 -0800
Message-ID: <F001.00437FE0.20020401094217@fatcity.com>

Jack,

How about substracting a system date with a database replication date to get difference of time? Can you please give me a specific command?

SQL> select to_char(sysdate, 'Dy Mon Dd HH24:MI:SS YYYY') from dual;

TO_CHAR(SYSDATE,'DYMONDD

---

Mon Apr 01 11:08:00 2002    ==================> System Time.

SQL> select next_date from user_refresh;

NEXT_DATE

---

Mon Apr 01 11:11:01 2002 ==============> Replication time.

Thanks,
David

-----Original Message-----
Sent: Monday, April 01, 2002 10:38 AM
To: Multiple recipients of list ORACLE-L

David,

Select (DateTime1 - DateTime2) * 24 * 60 * 60
>From Dual

;

Oracle date arithmetic results are in fractional days, so the above gets you the number of seconds between two Date datatype arguments. Of course you can go ahead and multiply 24*60*60 to get Seconds/Day, but I prefer to leave it that way so it's more obvious what my intent is.

Jack

---

Jack C. Applewhite
Database Administrator/Developer
OCP Oracle8 DBA
iNetProfit, Inc.
Austin, Texas
www.iNetProfit.com
japplewhite_at_inetprofit.com
(512)327-9068

-----Original Message-----
David M
Sent: Monday, April 01, 2002 9:48 AM
To: Multiple recipients of list ORACLE-L

Is it possible to calculate seconds using SQL?

For example, I'd like to subtract these two time to get difference in seconds:

10:20:32 - 10:25:29

Thanks,
David

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Received on Mon Apr 01 2002 - 11:42:17 CST