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Date: Fri, 10 Sep 2010 12:06:35 -0400 (EDT)
From: "Dag H. Wanvik (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Updated: (DERBY-4712) Complex nested joins problems
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     [ https://issues.apache.org/jira/browse/DERBY-4712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dag H. Wanvik updated DERBY-4712:
---------------------------------

    Affects Version/s: 10.5.3.0
                       10.5.2.0
                       10.5.1.1
                       10.4.2.0
                       10.4.1.3
                       10.3.3.0
                       10.3.2.1
                       10.3.1.4
                       10.2.2.0
                       10.2.1.6
                       10.1.3.1
                       10.1.2.1
                       10.1.1.0
                       10.0.2.1

The original NPE fixed by the uploaded patch is visible all way back to 10.0, marking.

> Complex nested joins problems
> -----------------------------
>
>                 Key: DERBY-4712
>                 URL: https://issues.apache.org/jira/browse/DERBY-4712
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1, 10.2.1.6, 10.2.2.0, 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1, 10.5.2.0, 10.5.3.0, 10.6.1.0
>            Reporter: Thomas Mueller
>            Assignee: Dag H. Wanvik
>            Priority: Minor
>             Fix For: 10.7.0.0
>
>         Attachments: assert-bind-opt-trees.log, assert-bind-opt-trees.txt, derby.log.analyzed, derby.log.simpler, derby4712a.diff, derby4712a.stat, drawing.txt
>
>
> I ran a randomized test for nested joins against PostgreSQL, Derby, and H2, and found some problems with Derby. The queries below throw NullPointerExceptions; the last query an assertion. The test case is here: http://code.google.com/p/h2database/source/browse/trunk/h2/src/test/org/h2/test/db/TestNestedJoins.java . There are probably shorter queries that are problematic, but I can't test it because Derby closes the connection after the assertion.
> create table t0(x int);
> create table t1(x int);
> create table t2(x int);
> create table t3(x int);
> create table t4(x int);
> insert into t4 values(0);
> insert into t4 values(1);
> insert into t4 values(2);
> insert into t4 values(3);
> create table t5(x int);
> insert into t5 values(0);
> insert into t5 values(1);
> insert into t5 values(2);
> insert into t5 values(3);
> insert into t5 values(4);
> create table t6(x int);
> insert into t6 values(0);
> insert into t6 values(1);
> insert into t6 values(2);
> insert into t6 values(3);
> insert into t6 values(4);
> insert into t6 values(5);
> create table t7(x int);
> insert into t7 values(0);
> insert into t7 values(1);
> insert into t7 values(2);
> insert into t7 values(3);
> insert into t7 values(4);
> insert into t7 values(5);
> insert into t7 values(6);
> create table t8(x int);
> insert into t8 values(0);
> insert into t8 values(1);
> insert into t8 values(2);
> insert into t8 values(3);
> insert into t8 values(4);
> insert into t8 values(5);
> insert into t8 values(6);
> insert into t8 values(7);
> create table t9(x int);
> insert into t9 values(0);
> insert into t9 values(1);
> insert into t9 values(2);
> insert into t9 values(3);
> insert into t9 values(4);
> insert into t9 values(5);
> insert into t9 values(6);
> insert into t9 values(7);
> insert into t9 values(8);
> insert into t0 values(1);
> insert into t1 values(2);
> insert into t0 values(3);
> insert into t1 values(3);
> insert into t2 values(4);
> insert into t0 values(5);
> insert into t2 values(5);
> insert into t1 values(6);
> insert into t2 values(6);
> insert into t0 values(7);
> insert into t1 values(7);
> insert into t2 values(7);
> insert into t3 values(8);
> insert into t0 values(9);
> insert into t3 values(9);
> insert into t1 values(10);
> insert into t3 values(10);
> insert into t0 values(11);
> insert into t1 values(11);
> insert into t3 values(11);
> insert into t2 values(12);
> insert into t3 values(12);
> insert into t0 values(13);
> insert into t2 values(13);
> insert into t3 values(13);
> insert into t1 values(14);
> insert into t2 values(14);
> insert into t3 values(14);
> insert into t0 values(15);
> insert into t1 values(15);
> insert into t2 values(15);
> insert into t3 values(15);
> select t0.x , t1.x , t2.x , t3.x , t4.x , t5.x , t6.x , t7.x , t8.x from (((t0 inner join ((t1 right outer join (t2 inner join t3 on t2.x = t3.x ) on t1.x = t2.x ) left outer join (t4 inner join t5 on t4.x = t5.x ) on t1.x = t4.x ) on t0.x = t2.x ) left outer join (t6 inner join t7 on t6.x = t7.x ) on t1.x = t6.x ) inner join t8 on t5.x = t8.x );
> select t0.x , t1.x , t2.x , t3.x , t4.x , t5.x , t6.x , t7.x from ((t0 right outer join t1 on t0.x = t1.x ) inner join (((t2 inner join (t3 left outer join t4 on t3.x = t4.x ) on t2.x = t3.x ) right outer join t5 on t2.x = t5.x ) left outer join (t6 inner join t7 on t6.x = t7.x ) on t4.x = t6.x ) on t0.x = t5.x );
> select t0.x , t1.x , t2.x , t3.x , t4.x , t5.x , t6.x , t7.x from ((((t0 left outer join t1 on t0.x = t1.x ) right outer join t2 on t0.x = t2.x ) right outer join t3 on t0.x = t3.x ) inner join ((t4 inner join t5 on t4.x = t5.x ) right outer join (t6 right outer join t7 on t6.x = t7.x ) on t4.x = t6.x ) on t1.x = t4.x );
> select t0.x , t1.x , t2.x , t3.x , t4.x , t5.x from (((t0 inner join t1 on t0.x = t1.x ) right outer join (t2 right outer join t3 on t2.x = t3.x ) on t0.x = t2.x ) inner join (t4 left outer join t5 on t4.x = t5.x ) on t1.x = t4.x );
> select t0.x , t1.x , t2.x , t3.x , t4.x , t5.x , t6.x from ((t0 right outer join (t1 right outer join (t2 left outer join (t3 left outer join t4 on t3.x = t4.x ) on t2.x = t3.x ) on t1.x = t3.x ) on t0.x = t1.x ) left outer join (t5 inner join t6 on t5.x = t6.x ) on t2.x = t5.x );

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