Re: OCTET_LENGTH is wrong
| От | Peter Eisentraut |
|---|---|
| Тема | Re: OCTET_LENGTH is wrong |
| Дата | |
| Msg-id | Pine.LNX.4.30.0111182251580.613-100000@peter.localdomain обсуждение исходный текст |
| Ответ на | Re: OCTET_LENGTH is wrong (Tom Lane <tgl@sss.pgh.pa.us>) |
| Ответы |
Re: OCTET_LENGTH is wrong
|
| Список | pgsql-hackers |
Tom Lane writes:
> What
> I am trying to point out is that the spec is so vague that it's not
> clear what the correct answer is.
I guess the authors of SQL92 never imagined someone would question what
"value of S" means. In SQL99 they included it:
SQL 99 Part 1, 4.4.3.2.
A value of character type is a string (sequence) of characters drawn from some character repertoire.
Just to be sure...
SQL 99 Part 1, 3.1 q)
q) sequence: An ordered collection of objects that are not necessarily distinct.
I don't have a set theory text available, but I think this should give a
fair indication that the number of bits in the value of S is the sum of
the bits in each individual character (which is in turn vaguely defined
elsewhere in SQL99) -- at least in Euclidean memory architectures.
--
Peter Eisentraut peter_e@gmx.net
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