[jira] [Created] (CALCITE-3627) Incorrect null semantic for ROW function

["Feng Zhu (Jira)" <ji...@apache.org>]

Feng Zhu created CALCITE-3627:
---------------------------------

             Summary: Incorrect null semantic for ROW function
                 Key: CALCITE-3627
                 URL: https://issues.apache.org/jira/browse/CALCITE-3627
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Feng Zhu
            Assignee: Feng Zhu


In CALCITE-2464, an in-depth discussion on nullability of structured type has been conducted.
According to SQL standards, a record's value (with structure type) is considered null if and only if all of its fields are null.
Based on that, the *ROW* function's return type can be nullable.

Moreover, current implementor for ROW function's _*NullPolicy*_ (_NullPolicy.ANY_) contradicts its runtime behavior.
{code:java}
Query: 
select ROW(1, cast(null as int))

Result:
{1, null}{code}
However, according to the NullPolicy, the result should be null.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)