BUG #5848: Between operator issue

curt@net2business.com wrote:

The following bug has been logged online:

Bug reference: 5848
Logged by:
Email address: curt@net2business.com
PostgreSQL version: 8.1.22
Operating system: Centos 5.5
Description: Between operator issue
Details:

Statement 'A between B and C' always false if B is greater than C, even if A
falls between them.

I think you want BETWEEN SYMMETRIC:

<literal>BETWEEN SYMMETRIC</> is the same as <literal>BETWEEN</>
except there is no requirement that the argument to the left of
<literal>AND</> be less than or equal to the argument on the right.
If it is not, those two arguments are automatically swapped, so that
a nonempty range is always implied.

--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +

"" <curt@net2business.com> wrote:

Statement 'A between B and C' always false if B is greater than C,
even if A falls between them.

I'm pretty sure that's required by the standard, and doing otherwise
could break code which counts on standard semantics.

-Kevin