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https://issues.apache.org/jira/browse/DERBY-5138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mamta A. Satoor updated DERBY-5138:
-----------------------------------

    Labels: derby_triage10_10 features  (was: features)
    
> Why can not create session indexes, session unique indexes and identity 
> columns in temporary session tables
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5138
>                 URL: https://issues.apache.org/jira/browse/DERBY-5138
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.7.1.1
>         Environment: windows, linux
>            Reporter: Oscar Bonilla
>              Labels: derby_triage10_10, features
>         Attachments: DB2 script.txt
>
>
> I am a senior programmer in sybase (transact sql) and Oracle. I had to 
> convert a lot of programs to work in DB2. There are many processes that 
> require a lot of rows in temporary tables that needs join together, and they 
> expends much time to execute without indexes. I have to transform the logic 
> to do that with permanent tables with indexes those I have to drop after the 
> process. Now, DB2 can do "create unique index SESSION.xx_I01 on SESSION xx" 
> and this resolve my problem with the efficienty of the processes. In another 
> hand, I do not have any problem to use "GENERATED ALWAYS AS IDENTITY" in a 
> temporary session table in DB2.  With this 2 issues it is imposible to 
> migrate all the systems to work with Derby. Thank.

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