RE: I was told there would be no (date) math

From: Mercadante, Thomas F \(LABOR\) <Thomas.Mercadante_at_labor.state.ny.us>
Date: Thu, 13 Apr 2006 10:41:53 -0400
Message-ID: <ABB9D76E187C5146AB5683F5A07336FF681134@EXCNYSM0A1AJ.nysemail.nyenet>

Rich,

Well, logically, the first query returns a negative date.

Time travel is not permitted in Larry-Land - not until he can find a way to charge for it.

The second one returns todays date.

Tom

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Jesse, Rich Sent: Thursday, April 13, 2006 9:52 AM
To: oracle-l_at_freelists.org
Subject: I was told there would be no (date) math

Hey all,

While debugging an analytical function issue using 9.2.0.5, I run this idiotic query:

SELECT TRUNC(SYSDATE) - TRUNC(SYSDATE) - TRUNC(SYSDATE) FROM DUAL; And it errors out with:

ORA-00932: inconsistent datatypes: expected DATE got DATE

(In 10.2, the verbage is modified to "expected JULIAN DATE got DATE")

Add parenthesis and it works:

SELECT TRUNC(SYSDATE) - (TRUNC(SYSDATE) - TRUNC(SYSDATE)) FROM DUAL; I've been looking through the docs and Metalink, but I'm unable to answer "Why?". Anyone?

TIA!
Rich
--

http://www.freelists.org/webpage/oracle-l

--

http://www.freelists.org/webpage/oracle-l Received on Thu Apr 13 2006 - 09:41:53 CDT