Grzegorz Jaskiewicz <[EMAIL PROTECTED]> writes:
> Wildcards cause things not to work as they should
> consider everything in [] brackets to be a possible choice and those
> three:
> a = 1.2.3.4
> b = 1.[2,3].3.4
> c = 1.3.3.4
> a = b, b = c, but a <> c, I was told that because of that btree won't
> work on my type. (on irc, that was AndrewSN as I recall).
Well, neither will sorting then. If you can define a consistent sort
order, btree will work; if you can't, then you can't sort either.
AFAICS, with rules like the above you can't define a consistent <
operator.
regards, tom lane
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