Re: Inherancing
От | Daniel Schuchardt |
---|---|
Тема | Re: Inherancing |
Дата | |
Msg-id | avf20d$m5v$1@news.hub.org обсуждение исходный текст |
Ответ на | Inherancing (Nasair Junior da Silva <njunior@univates.br>) |
Список | pgsql-sql |
You have to insert in th centers-table. Because it is inherited from cities, the record is automatically in cities. Search for SELECT * FROM ONLY in the docs too. > create table cities (id int, name varchar, primary key(id) ); > create table centers (state varchar(2)) inherits (cities); > > ant the tuple > insert into cities values (1, 'Lajeado'); Lajeado isn't a center here. You should do : insert into centers .... You can do then SELECT * FROM cities -> you will get all cities. Or SELECT * FROM centers -> you will get all centers. Or SELECT * FROM ONLY cities -> you will get only cities who aren't centers. Daniel. "Nasair Junior da Silva" <njunior@univates.br> schrieb im Newsbeitrag news:20030107094225.0345a050.njunior@univates.br... > Hi people, > supposing i have the tables : > > create table cities (id int, name varchar, primary key(id) ); > create table centers (state varchar(2)) inherits (cities); > > ant the tuple > insert into cities values (1, 'Lajeado'); > > How i do if i want to make this city as a center ? > > Thanks, > > xx===============================xx > || �v� Nasair Junior da Silva || > || /(_)\ Linux User: 246054 || > || ^ ^ njunior@univates.br || > ||CPD - Desenvolvimento || > ||Univates - Centro Universit�rio|| > xx===============================xx > > ---------------------------(end of broadcast)--------------------------- > TIP 6: Have you searched our list archives? > > http://archives.postgresql.org
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