VERY SMALL DOC BUG: http://www.postgresql.org/idocs/index.php?sql-createtable.html

Looks like this is already fixed in 7.3, due out in a few months:

A not-null constraint is always written as a column constraint. A
not-null constraint is equivalent to creating a check constraint
<literal>CHECK (<replaceable>column_name</replaceable> IS NOT
NULL)</literal>, but in <productname>PostgreSQL</productname>

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Janning Vygen wrote:

Hi,

In document
http://www.postgresql.org/idocs/index.php?sql-createtable.html

it says (Parameters, third section):

NOT NULL
The column is not allowed to contain NULL values. This is
equivalent to the column constraint CHECK (column NOT NULL).

At the end it must say:

CHECK (column IS NOT NULL).
^^

thanks for maintaining/developing postgresql!! Great database!

kind regards,
janning

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