Re: [SQL] inheritance
От | Oliver Elphick |
---|---|
Тема | Re: [SQL] inheritance |
Дата | |
Msg-id | 199805291958.UAA05205@linda.lfix.co.uk обсуждение исходный текст |
Ответ на | inheritance (Bernhard Matthias Ertl <ertl@delos.dbs.informatik.uni-muenchen.de>) |
Список | pgsql-sql |
Bernhard Matthias Ertl wrote: >Hi, > >only two short questions: >+ does the postgresql 6.2.1 already support inheritance and >+ if I have the tables cities and capitals (like in the tutorial), how can >I add attributes of a city to a capital? Before the capital attributes, >after the capital attributes or do I have to insert a capital citiy into >the table city as well as into the table capital? A descendant automatically inherits all attributes from its ancestor(s). Try \d and see. -- Oliver Elphick Oliver.Elphick@lfix.co.uk Isle of Wight http://www.lfix.co.uk/oliver PGP key from public servers; key ID 32B8FAA1 ======================================== "Let no man despise thy youth; but be thou an example of the believers, in word, in conversation, in charity, in spirit, in faith, in purity." I Timothy 4:12
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