Mellorsssss opened a new pull request, #17696:
URL: https://github.com/apache/doris/pull/17696
# Proposed changes
Issue Number: close #17487
## Problem summary
Implement array_zip.
<pre>
mysql> select array_zip(array('a', 'b'), array('c', 'd'));
+---------------------------------------------+
| array_zip(array('a', 'b'), array('c', 'd')) |
+---------------------------------------------+
| [{'a', 'c'}, {'b', 'd'}] |
+---------------------------------------------+
1 row in set (0.00 sec)
</pre>
## Checklist(Required)
* [ ] Does it affect the original behavior
* [ ] Has unit tests been added
* [x] Has document been added or modified
* [ ] Does it need to update dependencies
* [x] Is this PR support rollback (If NO, please explain WHY)
## Further comments
As the support for structs in Doris is not complete, some functions have
been added to compensate. Furthermore, the output scale of DateTimeV2 within
the struct is incorrect and requires correction.
For example:
<pre>
mysql> select array_zip(array(cast ('2023-03-05 12:23:24.999' as
datetimev2(1)),cast ('2023-03-05 15:23:23.997' as datetimev2(3))));
+----------------------------------------------------------------------------------------------------------------------+
| array_zip(array(CAST('2023-03-05 12:23:24.999' AS DATETIMEV2(1)),
CAST('2023-03-05 15:23:23.997' AS DATETIMEV2(3)))) |
+----------------------------------------------------------------------------------------------------------------------+
| [{2023-03-05 12:23:24.999000}, {2023-03-05 15:23:23.997000}]
|
+----------------------------------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)
mysql> select array_zip(array(cast ('2023-03-05 12:23:24.999' as
datetimev2(1)),cast ('2023-03-05 15:23:23.997' as datetimev2(2))));
+----------------------------------------------------------------------------------------------------------------------+
| array_zip(array(CAST('2023-03-05 12:23:24.999' AS DATETIMEV2(1)),
CAST('2023-03-05 15:23:23.997' AS DATETIMEV2(2)))) |
+----------------------------------------------------------------------------------------------------------------------+
| [{2023-03-05 12:23:24.990000}, {2023-03-05 15:23:23.990000}]
|
+----------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
</pre>
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