Re: null values in a view

On Wed, Oct 05, 2011 at 05:22:21PM +0300, Lauri Kajan wrote:
> Hi all,
>
> How could I create a view that returns null values among all other values.
> Here is a sample that i want to achieve:
>
> CREATE VIEW view1 AS
> SELECT
>   attribute1 as a1,
>   null as a2
> FROM
>   table;
>
> Now the problem is that I got an warning:  column "a2" has type "unknown"
> I know that I should define a data type for a field a2. But how?

using normal cast:
null::text as a2

or cast(null as text);

Best regards,

depesz

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