waitingkuo commented on issue #2995:
URL: https://github.com/apache/arrow-rs/issues/2995#issuecomment-1299013479
@comphead
extracting second in postgresql contains microseconds
```bash
willy=# select date_part('second', now());
date_part
-----------
21.070954
(1 row)
```
since the resolution for it's timestamp is microsecond
https://www.postgresql.org/docs/7.3/datatype-datetime.html
In datafusion, our default Timestamp's resolution is nanoseconds, so I
think we might need that
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