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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
>From: Carolyn Lu Wong <[EMAIL PROTECTED]>
>To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
>Subject: [SQL] primary key question
>Date: Thu, 20 Jul 2000 17:26:30 +1000
>
>create table aaa(
> field1 not null,
> field2 ,
>
Carolyn Lu Wong wrote:
>
> 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 be
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 u
