[ http://issues.apache.org/jira/browse/DERBY-424?page=all ]
Satheesh Bandaram updated DERBY-424:
------------------------------------
Version: 10.2.0.0
> Queryplan for a query using SESSION schema view is incorrectly put in
> statement cache. This could cause incorrect plan getting executed later if a
> temp. table is created with that name.
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-424
> URL: http://issues.apache.org/jira/browse/DERBY-424
> Project: Derby
> Type: Bug
> Components: SQL
> Versions: 10.1.1.0, 10.2.0.0
> Environment: generic
> Reporter: Satheesh Bandaram
> Priority: Minor
>
> See DERBY-405 for some discussion related this issue. I suspect this is
> because of statement caching. Derby doesn't seem to recognise we have a
> temporary table that just overloaded an existing physical table.
> It would have been good to avoid permanent tables/views/synonyms in SESSION
> schema. Not sure what we should do now about this, though.
> ij> create view session.st1 as select * from t;
> 0 rows inserted/updated/deleted
> ij> select * from session.st1;
> I |J |K
> -----------------------------------
> 1 |1 |NULL
> 2 |2 |NULL
> 3 |3 |NULL
> 4 |4 |NULL
> 4 rows selected
> ij> select * from t;
> I |J |K
> -----------------------------------
> 1 |1 |NULL
> 2 |2 |NULL
> 3 |3 |NULL
> 4 |4 |NULL
> 4 rows selected
> ij> declare global temporary table st1(c11 int, c12 int) on commit preserve
> rows
> not logged;
> 0 rows inserted/updated/deleted
> ij> select * from session.st1;
> I |J |K
> -----------------------------------
> 1 |1 |NULL
> 2 |2 |NULL
> 3 |3 |NULL
> 4 |4 |NULL
> 4 rows selected
> ij> select * from session.st1; <==== This statement has an extra space
> between FROM and session.st1
> C11 |C12
> -----------------------
> 0 rows selected
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