p1c2u commented on issue #1797:
URL:
https://github.com/apache/iceberg-python/issues/1797#issuecomment-2728701377
I had similar problem when trying to create table with pyarrow schema. You
need to covert the schema into iceberg schema and assign field ids first:
```python
schema_without_ids = _pyarrow_to_schema_without_ids(batches.get_schema())
schema_with_ids = assign_fresh_schema_ids(schema_without_ids)
```
Then you can grab ids to use inside partition spec
```python
event_time_field_id = schema_with_ids.find_field("event_time").field_id
partition_spec = PartitionSpec(PartitionField(
source_id = event_time_field_id,
field_id = 1000,
name="event_date",
transform=DayTransform(),
))
```
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