phpsxg commented on issue #35441:
URL: https://github.com/apache/arrow/issues/35441#issuecomment-1535901171
@mapleFU
I also have a question, how to automatically type conversion, for example,
id is int type, want to save is the string type, thank you
```
import random
import pandas as pd
import pyarrow as pa
import pyarrow.dataset as ds
schema = pa.schema([
pa.field('id', pa.string(), metadata={b"table_field": b"ID"}),
pa.field('age', pa.int64(), metadata={b"table_field": b"AGE"})
])
data = {
"id": [i for i in range(3)],
"age": [random.randint(10, 30) for i in range(3)]
}
df = pd.DataFrame(data)
table = pa.Table.from_pandas(df,schema=schema)
file_path = 'test'
ds.write_dataset(table, file_path, format='parquet',
existing_data_behavior='delete_matching',schema=schema)
```
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