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Posted to dev@empire-db.apache.org by "Rainer Döbele (Jira)" <ji...@apache.org> on 2020/05/04 10:56:00 UTC
[jira] [Resolved] (EMPIREDB-303) Add support for Unique-Indexes
which allow null values
[ https://issues.apache.org/jira/browse/EMPIREDB-303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rainer Döbele resolved EMPIREDB-303.
------------------------------------
Fix Version/s: empire-db-2.5.0
Resolution: Fixed
> 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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