Re: self defined data type "with limit"?
От | Joshua D. Drake |
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Тема | Re: self defined data type "with limit"? |
Дата | |
Msg-id | 4682953B.7000503@commandprompt.com обсуждение исходный текст |
Ответ на | Re: self defined data type "with limit"? (Martijn van Oosterhout <kleptog@svana.org>) |
Ответы |
Re: self defined data type "with limit"?
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Список | pgsql-hackers |
Martijn van Oosterhout wrote: > On Wed, Jun 27, 2007 at 02:08:43PM +0200, Michael Enke wrote: >> Hello everyone, >> I have created a new data type "mychar". How can I specify a limit for it? >> >> This (unlimited version) works fine: >> create table table_a(col_a mychar); > > What you want is called "user defined typmod" and I don't beleive any > released version has it, but it will be in the next release. I believe he could do it with a domain. create domain myreal_char as varchar(50); create table table_a(col_a myreal_char); Joshua D. Drake > > Have a nice day, -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL Replication: http://www.commandprompt.com/products/
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