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From "Mamta A. Satoor (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2879) CREATE TABLE AS <subquery> does not maintain the collation for character types.
Date Mon, 02 Jul 2007 16:31:04 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509609

Mamta A. Satoor commented on DERBY-2879:

Changes merged into codeline with revision 552534.

> CREATE TABLE AS <subquery> does not maintain the collation for character types.
> -------------------------------------------------------------------------------
>                 Key: DERBY-2879
>                 URL: https://issues.apache.org/jira/browse/DERBY-2879
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions:,,
>            Reporter: Daniel John Debrunner
>            Assignee: Mamta A. Satoor
>            Priority: Critical
> create table t as select tablename from sys.systables with no data;
> This creates a column TABLENAME with collation based upon the user schema, but the type
of  sys.systables.tablename has collation UCS_BASIC.
> The required behaviour should be verified with the SQL standard (11.3 SR6), but since
collation is an attribute of a type it seems logical that the collation is maintained by the
> Fixing this to keep the collation of the system column will cause problems though as
there would be no way to recreate this table through a regular create table, say if the schema
is dumped and recreated using ddlutils.
> I think this is critical as fixing it after a release would lead to a change in behaviour
for applications.

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