Re: PRIMARY KEY and INHERITANCE

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От Oliver Elphick
Тема Re: PRIMARY KEY and INHERITANCE
Дата
Msg-id 200012311913.eBVJDZH28080@linda.lfix.co.uk
обсуждение исходный текст
Ответ на PRIMARY KEY and INHERITANCE  (Ferruccio Zamuner <nonsolosoft@diff.org>)
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Ferruccio Zamuner wrote: >Hi, > >some months ago I've asked for a suggestion for this bug: > >create table a ( >
idserial primary key, >       something text >); > >create table b ( >       morething text >) inherits (a); > >create
tablec ( >       trouble int references b; >); >NOTICE:  CREATE TABLE will create implicit trigger(s) for FOREIGN KEY
check(    >s) >ERROR:  PRIMARY KEY for referenced table "b" not found > > >How is possible to resolve this bug? >How is
possibleto talk about a ORDBMS with this kind of error? 
 
Inheritance badly needs fixing (= I very much want it to work right!).
 >I've looked for workaround, but: > >create table d ( >       mytext text, >       primary key (id) >) inherits (a);
>ERROR: CREATE TABLE: column 'id' named in key does not exist
 
This does work at 7.1 >How can I help you to fix this? >

I had some suggestions for Inheritance semantics that no-one has yet
commented on  (24th December "Re: [HACKERS] RI problem with inherited
table (fwd)").

If people agree with these, I would like to start research on how to
implement them.



-- 
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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========================================   "Ye have heard that it hath been said, Thou shalt love      thy neighbour,
andhate thine enemy. But I say unto      you, Love your enemies, bless them that curse you, do      good to them that
hateyou, and pray for them which      despitefully use you, and persecute you;"
    Matthew 5:43,44 
 




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