numerics lose scale and precision in views of unions

It appears that when you create a view of a union, numeric data types
loose their scale and precision.

db=> create table t1 (c1 numeric(4,2));
CREATE TABLE

db=> create view v1 as select c1 from t1;
CREATE VIEW

db=> \d v1
View "brian.v1"
Column | Type | Modifiers
--------+--------------+-----------
c1 | numeric(4,2) |
View definition:
SELECT t1.c1
FROM t1;

db=> create view v2 as select c1 from t1 union select c1 from t1;
CREATE VIEW
db=> \d v2
View "brian.v2"
Column | Type | Modifiers
--------+---------+-----------
c1 | numeric |
View definition:
SELECT t1.c1
FROM t1
UNION
SELECT t1.c1
FROM t1;

db=> create view v3 as select c1::numeric(4,2) from t1 union select c1::numeric(4,2) from t1;
CREATE VIEW

db=> \d v3
View "brian.v3"
Column | Type | Modifiers
--------+---------+-----------
c1 | numeric |
View definition:
SELECT t1.c1
FROM t1
UNION
SELECT t1.c1
FROM t1;

--
Brian C. DeRocher @ Mitretek Systems
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