Re: NOT NULL Fixes

Your patch has been added to the PostgreSQL unapplied patches list at:

        http://momjian.postgresql.org/cgi-bin/pgpatches

I will try to apply it within the next 48 hours.

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Rod Taylor wrote:
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> Enforces NOT NULL constraints to be applied against new PRIMARY KEY
> columns in DefineIndex.  So, ALTER TABLE ... PRIMARY KEY will now
> automatically add the NOT NULL constraint.  It appeared the alter_table
> regression test wanted this to occur, as after the change the regression
> test better matched in inline 'fails'/'succeeds' comments.
> 
> At first glance, I didn't see any documentation that said this did not
> happen.
> 
> It's not as efficient as it could be for multi-key primary keys, but
> it's certainly better than the old method.  Besides, how often do you
> alter in a multi-key primary key on a table with lots of data.
> 
> 
> It also corrects the inheritance case:
> 
> b=# create table a (aa int4);
> CREATE TABLE
> b=# create table b (bb int4, primary key(aa, bb)) inherits (a);
> NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index 'b_pkey'
> for table 'b'
> CREATE TABLE
> b=# \d b
>        Table "public.b"
>  Column |  Type   | Modifiers 
> --------+---------+-----------
>  aa     | integer | not null
>  bb     | integer | not null
> Indexes: b_pkey primary key btree (aa, bb)
> 
> 
> The NOT NULL clause will NOT cascade to children at the moment.  Perhaps
> this should be the other way around?
> 
> -- 
> Rod Taylor <rbt@xxxxxx>
> 
> PGP Key: http://www.rbt.ca/rbtpub.asc

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