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https://issues.apache.org/jira/browse/EMPIREDB-303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rainer Döbele closed EMPIREDB-303.
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> Add support for Unique-Indexes which allow null values
> ------------------------------------------------------
>
> Key: EMPIREDB-303
> URL: https://issues.apache.org/jira/browse/EMPIREDB-303
> Project: Empire-DB
> Issue Type: Improvement
> Components: Core
> Reporter: Rainer Döbele
> Assignee: Rainer Döbele
> Priority: Major
> Fix For: empire-db-2.5.0
>
>
> Databases might support Unique-Indexes that allow Null values.
> In SQL-Server the Syntax is like:
> CREATE UNIQUE INDEX SOMECOLUMN_IDX ON SOMETABLE (SOMECOLUMN) WHERE SOMECOLUMN
> IS NOT NULL
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