lightjacket commented on issue #1604:
URL:
https://github.com/apache/arrow-datafusion/issues/1604#issuecomment-1015521579
@Jimexist thanks for the suggestion! I did consider that as an alternative
but would need to `unnest` the result in order to be able to join against
additional tables like so:
Set-returning
```sql
SELECT * FROM
(SELECT inverted_index_search('some query') as item_id) t
LEFT JOIN additional_data ON t.item_id = additional_data.item_id;
```
Single row w/ a list
```sql
SELECT * FROM
(SELECT unnest(inverted_index_search('some query')) as item_id) t
LEFT JOIN additional_data ON t.item_id = additional_data.item_id;
```
So if the `unnest` function existed, I would be unblocked. I _think_ if I
could create a set-returning UDF I could also implement `unnest` myself as a
user and wouldn't need to wait on a built-in `unnest`.
If there is an alternative to `unnest` to get that join I am looking for
though, that would absolutely work. I just haven't found it yet if it exists.
--
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]
