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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