ion-elgreco opened a new issue, #12370:
URL: https://github.com/apache/datafusion/issues/12370
### Describe the bug
Recently we made a change in delta-rs to make the schema's agnostic of
large/normal/view types. However datafusion can't properly coerce `List` and
`LargeList` yet
### To Reproduce
import polars as pl
tmp_path = "test_table"
pl.DataFrame({"a": ["test"], "b": [[1]]}).write_delta(tmp_path)
pl.DataFrame({"a": ["test1"], "b": [[1]]}).write_delta(
tmp_path,
mode="merge",
delta_merge_options={
"predicate": "s.a = t.a",
"source_alias": "s",
"target_alias": "t",
},
).when_not_matched_insert_all().execute()
```
DeltaError: Generic DeltaTable error: type_coercion
caused by
Error during planning: Failed to coerce then ([LargeList(Field { name:
"item", data_type: Int64, nullable: true, dict_id: 0, dict_is_ordered: false,
metadata: {} }), List(Field { name: "item", data_type: Int64, nullable: true,
dict_id: 0, dict_is_ordered: false, metadata: {} }), List(Field { name: "item",
data_type: Int64, nullable: true, dict_id: 0, dict_is_ordered: false, metadata:
{} }), List(Field { name: "item", data_type: Int64, nullable: true, dict_id: 0,
dict_is_ordered: false, metadata: {} })]) and else (None) to common types in
CASE WHEN expression
```
### Expected behavior
Be able to coerce any list type combination, whether its large, view or
normal
### Additional context
_No response_
--
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]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
