RE: primary key question

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El 20-Jul-2000 Carolyn Lu Wong escribio:

> create table aaa(
> field1 .... not null,
> field2 ....,
> ....,
> primary key (field1, field2)
> );
>
> Based on the above table definition, field2 allows null values. But
> after the table created based on the above script, field2 becomes not
> null. The only conclusion I come up with is setting the field as part of
> the primary key, PostgreSQL automatically sets the field to not null. Or
> is it something else?
>
> Is this a feature or bug?
It's a SQL feature, because primary key must no contain null values.

Pablo Niklas
pniklas(at)bigfoot(dot)com

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