dtenedor opened a new pull request, #47834:
URL: https://github.com/apache/spark/pull/47834
### What changes were proposed in this pull request?
This PR make the `TO_AVRO` SQL function `jsonFormatSchema` argument optional.
For example, now it is possible to just call it with a single input argument:
```
create table t as
select named_struct('u', named_struct('member0', member0, 'member1',
member1)) as s
from values (1, null), (null, 'a') tab(member0, member1);
select length(to_avro(s)) > 0 from t;
> true
true
```
### Why are the changes needed?
This makes the `TO_AVRO` SQL function easier to use.
### Does this PR introduce _any_ user-facing change?
Yes, see above.
### How was this patch tested?
This PR adds unit test coverge.
### Was this patch authored or co-authored using generative AI tooling?
No.
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