comphead commented on PR #4385:
URL:
https://github.com/apache/arrow-datafusion/pull/4385#issuecomment-1328149457
@waitingkuo finally we can get back to #3997 resolution.
Please check the PR.
Now date_part supports second fraction, but its still not the same as in
PSQL like
```
willy=# select date_part('second', timestamp '2000-01-01T00:00:00.1');
date_part
-----------
0.1
(1 row)
```
To do the same you need to run
```
select date_part('milliseconds', timestamp)
```
Let me know if this is ok
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