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Posted to issues@calcite.apache.org by "Julian Stenzel (JIRA)" <ji...@apache.org> on 2016/12/23 15:47:58 UTC

[jira] [Created] (CALCITE-1554) Supporting NULL as column in SELECT Statement

Julian Stenzel created CALCITE-1554:
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             Summary: Supporting NULL as column in SELECT Statement
                 Key: CALCITE-1554
                 URL: https://issues.apache.org/jira/browse/CALCITE-1554
             Project: Calcite
          Issue Type: Wish
            Reporter: Julian Stenzel
            Assignee: Julian Hyde


it would be cool to support null as an column in the SELECT statement.

Use Case:

UNION two tables x,y with different number of columns e.g.

Select id, name, age from x
Union
Select id, name, Null as age from y

this should be a useful use case for adressing NoSQL databases where our data exist in different schemes



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