On Mon, Sep 24, 2012 at 09:56:14AM +0100, Daniele Varrazzo wrote:
> The funniest surprise I've had during the development
> was an error creating the object TextRange('#', '$') in the database.
> It should be possible as
> >>> ord('#'), ord('$')
> (35, 36)
> but PG insisted that "range lower bound must be less than or equal to
> range upper bound". Well, turns out that:
> postgres=# select ascii('#') < ascii('$'), '#' < '$';
> ?column? | ?column?
> t | f
> (1 row)
This does not seem intuitive but is probably quite logical:
ascii('#') < ascii('$')
eventually compares numerical values (35 and 36) the comparison
'#' < '$'
operates on characters the sorting order (<) of which
depends on the lcoale in use.
GPG key ID E4071346 @ gpg-keyserver.de
E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346
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|Subject: Re: Range type adaptation implemented|
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|Subject: Range type adaptation implemented|