Re: Altering Views

On 2013-02-20 17:25:41 +0100, Misa Simic wrote:
> Hi,
> 
> If we want to "add new column" to the view - the only one way (we have
> found) is:
> 
> -drop view
> -create it again ( with new column )

Since 8.4 you can add new columns to the end of a view definition using
CREATE OR REPLACE VIEW.

http://www.postgresql.org/docs/current/interactive/sql-createview.html :
> CREATE OR REPLACE VIEW is similar, but if a view of the same name
> already exists, it is replaced. The new query must generate the same
> columns that were generated by the existing view query (that is, the
> same column names in the same order and with the same data types), but
> it may add additional columns to the end of the list. The calculations
> giving rise to the output columns may be completely different.

Btw, this is more of a pgsql-general type of question...

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services