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From "Thomas Hill (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5292) SQLAuthorisation and views
Date Wed, 22 Jun 2011 17:06:47 GMT
SQLAuthorisation and views
--------------------------

                 Key: DERBY-5292
                 URL: https://issues.apache.org/jira/browse/DERBY-5292
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.7.1.1
         Environment: windows xp
            Reporter: Thomas Hill


Hi,

in some cases there seem to be issues with SQLAuthorisation in conjunction with database VIEWS.
Please see attached files as repro (script.txt has only the SQL I executed, output is the
output resulting when running the script). 
I would think identical results should be returned in all cases and independent on how the
view has been defined, but this to my surprise not being the case:

1) Trying to select from view appl."VW_MyTasks" - which is a simple view defined on just one
table - leads to expected results, i.e. "my" tasks are being returned.
2) Trying to select from view appl."VW_MyPriorityTasks - which is a view defined on two joined
tables without using an inner join clause - leads to expected results, i.e. "my" priority
tasks are being returned.
3) Trying to select from view appl."VW2_MyPriorityTasks - which is the same view but now the
two tables joined using an inner join clause - leads to an error and no tasks returned (when
the same results as in 2) above were expected).
4) Trying to select from view appl."VW3_MyPriorityTasks" - which is a view defined using a
subselect - also unexpectedly leads to an error.

Note: While I could rewrite each inner join clause with changing the syntax like in 2) above,
this provides a simple work-around for such cases. May be there is a work-around for subselects
also (not sure if every subselect could be rewritten to a join?). However when depending on
using EXISTS constructs in the query there unfortunately is no way (I would know of) to get
around this problem. Unfortuanetly a view that makes use of EXISTS is also one I would need
to define in my data base...

Thanks

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