Re: [SQL] Question on Inheritance and Primary Keys.
От | Dutt Kalapatapu |
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Тема | Re: [SQL] Question on Inheritance and Primary Keys. |
Дата | |
Msg-id | 3.0.6.32.19991011183045.00993a10@pop.eudoramail.com обсуждение исходный текст |
Ответ на | Re: [SQL] Question on Inheritance and Primary Keys. (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: [SQL] Question on Inheritance and Primary Keys.
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Список | pgsql-sql |
If I redeclare the Values again, will it overwrite the inherited values? Thanks for the clarification. -Dutt At 09:21 PM 10/11/99 -0400, Tom Lane wrote: >Dutt Kalapatapu <dutt@eudoramail.com> writes: >> I expect from this that when we insert some thing in TableB then >> parameterone should be unique, but the database is not enforcing the rule >> and it takes duplicate values. > >Constraints and indexes aren't inherited; you have to redeclare them for >each derived table. I agree this is a bug, or at least lack of a >feature that ought to be there. It's on the TODO list, in fact: > >* Unique index on base column not honored on inserts from inherited table > INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail > [inherit] > >I don't know when it might get fixed. None of the currently active >developers seem to be very interested in inheritance issues, so it >could be a while before anyone decides to look at this problem. > > regards, tom lane > --Dutt Kalapatapu ________________________ |ipVerse Inc., | |1901 Landings Drive | |Mountain View, CA-94043| |Telefono: 650 919 0647 | |________________________|
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