Re: int4 to varchar length (pgadmin3) issue
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Тема | Re: int4 to varchar length (pgadmin3) issue |
Дата | |
Msg-id | 20060831184106.86238.qmail@web33311.mail.mud.yahoo.com обсуждение исходный текст |
Ответ на | Re: int4 to varchar length (pgadmin3) issue (Richard Broersma Jr <rabroersma@yahoo.com>) |
Ответы |
Re: int4 to varchar length (pgadmin3) issue
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Список | pgsql-novice |
> > iow, i want to limit the the newly converted > varchar > > revision to 2 characters, but can't due to the > grayed > > out boxes in pgadmin3. > > I saw this example at: > http://www.postgresql.org/docs/8.1/interactive/sql-altertable.html > > ALTER TABLE distributors ADD CONSTRAINT zipchk CHECK > (char_length(zipcode) = 5); > > This should do what you want. > > Regards, > > Richard Broersma Jr. > Richard, thank you. i think this does what i want, however, i want to understand a bit more. this is an additional defined constraint, correct? is this constraint added automagically by pgadmin when you enter a length value or is this a different method to achieve a similar result? tia.. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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