Re: Nulls get converted to 0 problem
От | Jon Earle |
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Тема | Re: Nulls get converted to 0 problem |
Дата | |
Msg-id | Pine.LNX.4.55.0306050931270.16042@kronos.honk.org обсуждение исходный текст |
Ответ на | Re: Nulls get converted to 0 problem (<terry@ashtonwoodshomes.com>) |
Ответы |
Re: Nulls get converted to 0 problem
Re: Nulls get converted to 0 problem Re: Nulls get converted to 0 problem Re: Nulls get converted to 0 problem Re: Nulls get converted to 0 problem Re: Nulls get converted to 0 problem Re: Nulls get converted to 0 problem |
Список | pgsql-general |
On Wed, 4 Jun 2003 terry@ashtonwoodshomes.com wrote: > Oracle *incorrectly* interprets blank (empty) strings as NULL. They are NOT > the same. A string of zero characters is a string nonetheless. A NULL is > "the absence of value", which equals nothing (theoretically not even another > NULL). If you're testing a value, you're testing to see if there's something in there or not - what difference does it make if the variable contains 0, "" or NULL? Why not adhere to the practices inherent (and thus anticipated by developers) in other languages (C comes to mind) where 0, NULL and "" are equivalent? Cheers! -- Jon Earle SAVE FARSCAPE http://www.savefarscape.com/
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