Re: NULL values or not?
От | Jan Wieck |
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Тема | Re: NULL values or not? |
Дата | |
Msg-id | 200112211229.fBLCTvD01601@saturn.jw.home обсуждение исходный текст |
Ответ на | NULL values or not? (Archibald Zimonyi <archie@netg.se>) |
Ответы |
Re: NULL values or not?
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Список | pgsql-sql |
Archibald Zimonyi wrote: > > Hi there, > > I have a question about NULL values. Lets say that we have a world with > the following info: > > FirstName > LastName > PhoneNumber > > > Everyone has to have a FirstName and LastName but not everyone has to have > a PhoneNumber. I don't know of any particular, but I can imagine cultures where people don't have first or last names. For surealot of people on this earth don't have a mailing address that'd fit into the "usual" schema. Don't make the schematoo scattered just to avoid NULLs. Wether you like them or not doesn't matter, use them where they are handy. Jan -- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #================================================== JanWieck@Yahoo.com # _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
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