Re: OCTET_LENGTH is wrong
От | Peter Eisentraut |
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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
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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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