Kimahriman opened a new issue, #13682:
URL: https://github.com/apache/datafusion/issues/13682

   ### Describe the bug
   
   `array_has` handles nulls differently for scalars and arrays. Scalars return 
null if all the left hand side values are null, while arrays don't care what 
values in the left hand side are null. Additionally, other systems like Spark 
and Postgres have different null behavior, such that if at least one element of 
the left hand side is null, return null instead of false. I can't find any 
definitive SQL standard for this, but it might be good to behave consistent 
with those other systems.
   
   ### To Reproduce
   
   ```
   > create table arrays as values (make_array(1, 2, 3), 4), (make_array(1, 2, 
NULL), 4), (make_array(NULL, NULL, NULL), 4);
   0 row(s) fetched. 
   Elapsed 0.017 seconds.
   
   > select array_has(column1, column2) from arrays;
   +------------------------------------------+
   | array_has(arrays.column1,arrays.column2) |
   +------------------------------------------+
   | false                                    |
   | false                                    |
   | false                                    |
   +------------------------------------------+
   3 row(s) fetched. 
   Elapsed 0.007 seconds.
   
   > select array_has([1, 2, 3], 4),
   array_has([1, 2, NULL], 4),
   array_has([NULL, NULL, NULL], 4);
   
+------------------------------------------------------------+--------------------------------------------------------+------------------------------------------------+
   | array_has(make_array(Int64(1),Int64(2),Int64(3)),Int64(4)) | 
array_has(make_array(Int64(1),Int64(2),NULL),Int64(4)) | 
array_has(make_array(NULL,NULL,NULL),Int64(4)) |
   
+------------------------------------------------------------+--------------------------------------------------------+------------------------------------------------+
   | false                                                      | false         
                                         |                                      
          |
   
+------------------------------------------------------------+--------------------------------------------------------+------------------------------------------------+
   1 row(s) fetched. 
   Elapsed 0.007 seconds.
   ```
   
   ### Expected behavior
   
   These queries return the same results.
   
   ### Additional context
   
   _No response_


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: [email protected]

For queries about this service, please contact Infrastructure at:
[email protected]


---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]

Reply via email to