Re: Is Dropping a column "CHECK" constraint possible?
От | Rajesh Kumar Mallah. |
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Тема | Re: Is Dropping a column "CHECK" constraint possible? |
Дата | |
Msg-id | 200207061033.16836.mallah@trade-india.com обсуждение исходный текст |
Ответ на | Re: Is Dropping a column "CHECK" constraint possible? ("Christopher Kings-Lynne" <chriskl@familyhealth.com.au>) |
Список | pgsql-sql |
Yup it did!. Thanks a ton, it was there in the ALTER TABLE documentation i overlooked :-( regds mallah. On Saturday 06 July 2002 10:05, Christopher Kings-Lynne wrote: > > can anyone please help? > > i have a to drop a check contstraint from a column. eg > > > > tradein_clients=# \d t_a > > Table "t_a" > > Column | Type | Modifiers > > ------------+---------+----------- > > company_id | integer | > > exp | text | > > imp | text | > > Check constraints: "$1" (length(imp) > 1) > > "aaaaaq" (length(imp) > 1) > > > > Can i remove to contraints thru ALTER TABLE or similar commands. > > I have read the docs for ALTER TABLE but the command described is > > not working for me. > > This should work, so long as you're using postgres 7.2+ > > ALTER TABLE "t_a" DROP CONSTRAINT "aaaaaq" RESTRICT; > > Chris -- Rajesh Kumar Mallah, Project Manager (Development) Infocom Network Limited, New Delhi phone: +91(11)6152172 (221) (L) ,9811255597 (M) Visit http://www.trade-india.com , India's Leading B2B eMarketplace.
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