On Jul 7, 2008, at 12:13, Zdenek Kotala wrote:
I'm sorry. I meant bttext()
http://doxygen.postgresql.org/varlena_8c-source.html#l01270
bttext should use in citextcmp function. It uses strcol function.
I've no idea what bttext has to do with anything. Sorry if I'm being
slow here.
And citext_eq should be implemented as texteq:
http://doxygen.postgresql.org/varlena_8c-source.html#l01164
I'm sorry for confusion I'm exchange bttext and varstr_cmp. :(
Okay, I see that text_cmp() uses varstr_cmp():
http://doxygen.postgresql.org/varlena_8c-source.html#l01139
While texteq() and textne() use strncmp():
http://doxygen.postgresql.org/varlena_8c-source.html#l01164
http://doxygen.postgresql.org/varlena_8c-source.html#l01187
The other operator functions, like text_lt(), use text_cmp() and
therefore varstr_cmp():
http://doxygen.postgresql.org/varlena_8c-source.html#01210
My question is: why? Shouldn't they all use the same function for
comparison? I'm happy to dupe this implementation for citext, but I
don't understand it. Should not all comparisons be executed
consistently?
Thanks,
David
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