Re: [HACKERS] Unique constraint for inherited tables? - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] Unique constraint for inherited tables?
Date
Msg-id 200001231004.FAA22692@candle.pha.pa.us
Whole thread Raw
In response to Unique constraint for inherited tables?  (Constantin Teodorescu <teo@flex.ro>)
List 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@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026
 


pgsql-hackers by date:

Previous
From: Bruce Momjian
Date:
Subject: column aliases
Next
From: "Hiroshi Inoue"
Date:
Subject: RE: [HACKERS] Happy column dropping