data type change on a view

Hello @all,

i have a question (rot really for myself, a member of ther german forum
asks):

i have two tables, contains a varchar(N)-column. Now i create a VIEW
based on this tables. The resulting view contains now a varchar without
length. How can i prevent this? How can i force that the column in the
view contains the *exact* typ?


Example:

test=# create table h1 (t varchar(8));
CREATE TABLE
test=*# create table h2 (t varchar(8));
CREATE TABLE
test=*# create view h as select t from h1 union all select t from h2;
CREATE VIEW
test=*# \d h
            View "public.h"
 Column |       Type        | Modifiers
--------+-------------------+-----------
 t      | character varying |


thx, Andreas
-- 
Andreas Kretschmer
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