Horton

Re: Range Types: << >> -|- ops vs empty range

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Erik Rijkers <er@xs4all.nl>, pgsql-hackers@postgresql.org
Date: 2011-02-11T17:26:22Z
Lists: pgsql-hackers 
On Fri, 2011-02-11 at 12:03 -0500, Robert Haas wrote:
> For what it's worth, my completely uninformed opinion is that
> comparison operators shouldn't error out.  I haven't read the patch so
> I'm not sure what those operators are defined to do, though.

">>" means "strictly right of"
"<<" means "strictly left of"
"-|-" means "adjacent" (touching but not overlapping)

I'm open to suggestion about how those behave with empty ranges.

Regards,
	Jeff Davis