>
> http://fts.postgresql.org/db/mw/msg.html?mid=1071582
>
resp.
>
> You can rename your old column, create a new column varchar(100),
update
> ... set newCol=oldCol, drop oldCol and rename newCol to oldCol
> See ALTER TABLE doc for this.
>
Ok, this is the accurate solution to minimize side effects.
Thanks to Robert and Andreas for pointing this out.
Regards, Christoph