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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-4644) Sql query "select * from tablename where column1 in (?,?)" never ends when no parameter value have been set to PreparedStatement.
Date Thu, 06 May 2010 08:54:47 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen resolved DERBY-4644.
---------------------------------------

    Resolution: Duplicate

I believe this bug has been fixed by DERBY-4376. Resolving as a duplicate. Please reopen if
that didn't fix this issue.

The problematic query in DERBY-4376 was a different one: "select * from t where x=? or x=?".
However, it is rewritten internally to "select * from t where x in (?,?)" which is the same
as the query in this report.

> Sql query "select * from tablename where column1 in (?,?)" never ends when no parameter
value have been set to PreparedStatement.
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4644
>                 URL: https://issues.apache.org/jira/browse/DERBY-4644
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.5.3.0
>         Environment: window xp; jdk1.5
>            Reporter: xiaofeng.zhang
>
> Reproduce steps:
> 1. Create a PreparedStatement with sql text "select * from tablename where column1 in
(?,?)".
> 2. Call JDBC PreparedStatement .executeQuery( ) to execute this statement and it never
stop. I found my CPU Usage is 100% after this happened. 
> More info:
> 1. The SQL like "select * from tablename where column1 in (?)" can return an empty result
set
> 2. If call PreparedStatement .setInt( 1,1 ) to set a parameter value the query can work

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