matthewmturner commented on issue #696:
URL: https://github.com/apache/arrow-rs/issues/696#issuecomment-917427288
@seddonm1 i believe postgres works as expected. i did the below.
```
postgres=# WITH vals(a) AS (VALUES ('Animal'), (null), ('House'))
SELECT a, regexp_matches(a, '^[A]') m from vals;
```
Resulting in
```
a | m
--------+-----
Animal | {A}
(1 row)
```
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