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Posted to derby-dev@db.apache.org by "Yip Ng (JIRA)" <de...@db.apache.org> on 2006/10/17 17:22:36 UTC
[jira] Assigned: (DERBY-1967) UNION (ALL) contraint violation
problem
[ http://issues.apache.org/jira/browse/DERBY-1967?page=all ]
Yip Ng reassigned DERBY-1967:
-----------------------------
Assignee: Yip Ng
> UNION (ALL) contraint violation problem
> ---------------------------------------
>
> Key: DERBY-1967
> URL: http://issues.apache.org/jira/browse/DERBY-1967
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.2.1.6, 10.1.3.1
> Environment: derby v10.1.3.1 and v10.2.1.6 on linux (FC5), jdk 1.5.0_06-b05
> and jdk 1.6.0-rc-b99.
> Reporter: Radu Radutiu
> Assigned To: Yip Ng
>
> The following simple test case gives an error:
> create table a (f1 varchar(10));
> create table b (f2 varchar(10));
> insert into b values('test');
> select nullif('x','x') as f0, f1 from a
> union all
> select nullif('x','x') as f0, nullif('x','x') as f1 from b;
> ERROR 23502: Column 'F0' cannot accept a NULL value.
> SQLState(23502) vendor code(30000)
> However the following works ok:
> drop table a;
> drop table b;
> create table a (f1 int);
> create table b (f2 int);
> insert into b values(1);
> select nullif('x','x') as f0, f1 from a
> union all
> select nullif('x','x') as f0, nullif(1,1) as f1 from b;
> The test case is a simplification of a query generated by Hibernate
> with the table per class inheritance strategy. Both queries work ok on
> MSSQL and PostgreSQL. On Derby only the second query works, the first
> one giving a contraint violation.
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