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https://issues.apache.org/jira/browse/DERBY-2207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12563612#action_12563612
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Daniel John Debrunner commented on DERBY-2207:
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Another question around SET ROLE.

What happens to a connection's prepared statements that were prepared when a 
role was in effect and now the role is not in effect?

E.g.

SET ROLE PAYROLL_ADMIN

prepare statement P1 -- which requires role PAYROLL_ADMIN

execute P1

SET ROLE NONE

execute P1 -- what happens here?

> Improve usability of Derby's client/server security by implementing ANSI Roles
> ------------------------------------------------------------------------------
>
>                 Key: DERBY-2207
>                 URL: https://issues.apache.org/jira/browse/DERBY-2207
>             Project: Derby
>          Issue Type: New Feature
>          Components: Security, SQL
>            Reporter: Rick Hillegas
>            Assignee: Dag H. Wanvik
>         Attachments: spec.html, spec.html, spec.html, spec.html, spec.html, 
> spec.html
>
>
> Implementing ANSI Roles will make it easier to manage security for multi-user 
> applications with high user turnover.

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