[jira] [Updated] (DERBY-6013) Assert failure with ORDER BY in UNION used in sub-query

["Dag H. Wanvik (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-6013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dag H. Wanvik updated DERBY-6013:
---------------------------------

              Urgency: Normal
    Affects Version/s: 10.6.1.0
                       10.6.2.1
                       10.7.1.1
                       10.8.1.2
                       10.8.2.2
                       10.8.3.0
                       10.10.1.1
               Labels: derby_triage10_11  (was: )

Triaged for 10.11. Wrong back to 10.6 where ORDER BY in subqueries was introduced.
                
> Assert failure with ORDER BY in UNION used in sub-query
> -------------------------------------------------------
>
>                 Key: DERBY-6013
>                 URL: https://issues.apache.org/jira/browse/DERBY-6013
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.6.1.0, 10.6.2.1, 10.7.1.1, 10.8.1.2, 10.8.2.2, 10.8.3.0, 10.9.1.0, 10.10.1.1
>            Reporter: Knut Anders Hatlen
>              Labels: derby_triage10_11
>
> I see an assert failure when executing this sequence of statements using a debug version of 10.9.1.0 or trunk:
> ij version 10.9
> ij> connect 'jdbc:derby:memory:db;create=true';
> ij> create table t(x int);
> 0 rows inserted/updated/deleted
> ij> create table u(x int);
> 0 rows inserted/updated/deleted
> ij> insert into t values 1,2,3,4,5;
> 5 rows inserted/updated/deleted
> ij> insert into u values 4,5,6,7;
> 4 rows inserted/updated/deleted
> ij> select * from sysibm.sysdummy1 where exists ((select * from t) union (select * from u where x = 4) order by x);
> ERROR XJ001: Java exception: 'ASSERT FAILED getMatchingColumn() not expected to be called for tableConstructor: false
> all: false
> nestedInParens: false
> correlation Name: null
> null
> tableNumber 3
> level 1
> resultSetNumber: 0
> referencedTableMap: null
> statementResultSet: false
> : org.apache.derby.shared.common.sanity.AssertFailure'.
> Using a non-debug build makes it fail more gracefully:
> ij> select * from sysibm.sysdummy1 where exists ((select * from t) union (select * from u where x = 4) order by x);
> ERROR 42X04: Column 'X' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE  statement then 'X' is not a column in the target table.
> However, I think the error message is misleading, as X is a valid column in the query. Seen for example by executing the nested query as a top-level query:
> ij> (select * from t) union all (select * from u where x = 4) order by x;
> X          
> -----------
> 1          
> 2          
> 3          
> 4          
> 4          
> 5          
> 6 rows selected
> However, possibly related, if I simply add parentheses around the working query, it again fails with a complaint about the column X:
> ij> ((select * from t) union all (select * from u where x = 4) order by x);
> ERROR 42X78: Column 'X' is not in the result of the query expression.

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