RE: [GENERAL] Relations between tables.
| От | Rudy Gireyev |
|---|---|
| Тема | RE: [GENERAL] Relations between tables. |
| Дата | |
| Msg-id | 199905201844.OAA97993@hub.org обсуждение исходный текст |
| Ответ на | RE: [GENERAL] Relations between tables. ("Jackson, DeJuan" <djackson@cpsgroup.com>) |
| Список | pgsql-general |
On 20 May 99, at 13:01, Jackson, DeJuan wrote: > > Being rather new to DBs in general, I wonder - is the relation <snip> > > Using a relation constraint, are tables tied together automatically, > > thus removing the need to use a 'WHERE table1.index = table2.t1index' in > > select clauses retreiving data in table2 and table1? You can essentially achive this by creating a view, and then selecting against the view, rather than the individual tables within it. > Nope this doesn't even happen in MS Access. If you build your query in > Access and look at the SQL (go to the View menu the select SQL) that's > generated you'll see that all Access is put that part of the WHERE clause > in for you. Most other databases aren't that presumptuous. > > > christian > -DEJ > > >
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