[jira] Updated: (DERBY-5111) NullPointerException on unique constraint violation with unique index

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-5111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Knut Anders Hatlen updated DERBY-5111:
--------------------------------------

    Issue & fix info: [Repro attached]

> NullPointerException on unique constraint violation with unique index
> ---------------------------------------------------------------------
>
>                 Key: DERBY-5111
>                 URL: https://issues.apache.org/jira/browse/DERBY-5111
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.6.1.0, 10.6.2.1, 10.7.1.1
>            Reporter: Mark La Rue
>
> Given the below DDL, violations of the unique constraint (an example follows the DDL) specified on table t1 will result in a NullPointerException that terminates the active connection.  The root cause appears to be related to the unique indexes; removing them results in the correct constraint violation.
> CREATE TABLE s.t0 (t0_id INTEGER NOT NULL, value VARCHAR(75) NOT NULL);
> ALTER TABLE s.t0 ADD CONSTRAINT pk_1 PRIMARY KEY (t0_id);
> CREATE TABLE s.t1 (t1_id INTEGER NOT NULL, t0_id INTEGER NOT NULL, value VARCHAR(75) NOT NULL);
> CREATE UNIQUE INDEX s.ui_1 ON s.t1 (t1_id);
> ALTER TABLE s.t1 ADD CONSTRAINT pk_2 PRIMARY KEY (t1_id);
> ALTER TABLE s.t1 ADD CONSTRAINT fk_1 FOREIGN KEY (t0_id) REFERENCES s.t0 (t0_id) ON DELETE CASCADE;
> CREATE UNIQUE INDEX s.ui_2 ON s.t1 (t0_id, value);
> ALTER TABLE s.t1 ADD CONSTRAINT uc_1 UNIQUE (t0_id, value);
> Minimal DML to trigger the constraint violation:
> INSERT INTO s.t0 VALUES (0, 'foobar');
> INSERT INTO s.t1 VALUES(0, 0, 'Test');
> INSERT INTO s.t1 VALUES(1, 0, 'Test');

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