From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Constantin Teodorescu <teo(at)flex(dot)ro> |
Cc: | "pgsql-hackers(at)postgreSQL(dot)org" <pgsql-hackers(at)postgreSQL(dot)org> |
Subject: | Re: [HACKERS] Unique constraint for inherited tables? |
Date: | 2000-01-23 10:04:37 |
Message-ID: | 200001231004.FAA22692@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-hackers |
> I am defining a table t1 with a NOT NULL field f1 and UNIQUE field f2.
> (it automatically defines t1_f2_key unique index)
>
> I am defining now a new table t2 that inherits t1 table and add some
> columns.
>
> The NOT NULL constraint is preserved for f1 field, the UNIQUE for f2 not
> (the index t2_f2_key) is not defined.
>
> Wouldn't be normal that the unique constraint to be inherited also in
> t2?
This is on the TODO list:
* Unique index on base column not honored on inserts from inherited
table
INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
[inherit]
--
Bruce Momjian | http://www.op.net/~candle
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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