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From "Chua Chee Seng (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4284) All Columns become Nullable when Using left join
Date Mon, 22 Jun 2009 07:50:07 GMT
All Columns become Nullable when Using left join
------------------------------------------------

                 Key: DERBY-4284
                 URL: https://issues.apache.org/jira/browse/DERBY-4284
             Project: Derby
          Issue Type: Bug
    Affects Versions: 10.5.1.1
         Environment: Microsoft Windows XP SP3, Sun JDK 6 Update 14
            Reporter: Chua Chee Seng


Consider following:-

create table person (
  id varchar(20) not null,
  name varchar(100) not null
);

create table car (
  id varchar(20) not null,
  person_id varchar(20) not null,
  model varchar(100) not null,
  plat_no varchar(100) not null
);

When select :-
select
p.name,
c.model,
c.plat_no
from person p
left join car c on (p.id = c.person_id);

>From the ResultSet, get the ResultSetMetaData and inspect each column's isNullable() value,
which is always = 1 (always nullable).  Expected : column 'p.name' isNullable = 0 (not nullable),
but I get 'p.name' isNullable = 1 (nullable)

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