Re: self defined data type "with limit"?
| От | Joshua D. Drake |
|---|---|
| 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"?
|
| 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,
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