"Alain TESIO" <tesio(at)easynet(dot)fr> writes:
> I have to apply rtrim explicitely if the string to
> compare has been converted to lowercase :
lower() is a text function, not a fixed-length-char function,
so the result of lower() is assumed to have significant trailing
blanks. It's not clear to me that the behavior you're complaining
about is a bug.
I'd suggest using varchar or text if you are dealing with strings
that are actually variable-length.
regards, tom lane
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