eyevz commented on issue #3485:
URL: https://github.com/apache/arrow-adbc/issues/3485#issuecomment-3580157807
Here is a very simple reproduction.
Environment:
- python 3.12.6
- pyarrow 22.0.0
- adbc-driver-manager 1.9.0
- adbc-driver-postgresql 1.9.0
The code
```python
from decimal import Decimal
import pyarrow as pa
from adbc_driver_postgresql import dbapi
URI = "postgresql://postgres:password@localhost/postgres"
table = pa.Table.from_arrays(
[[Decimal("0.01"), Decimal("0.20"), Decimal("3.00")]],
schema=pa.schema([("bar", pa.decimal128(38, 9))])
)
print(table)
print("===")
with dbapi.connect(URI) as conn:
with conn.cursor() as cur:
cur.execute("create table if not exists foo (bar numeric)")
cur.adbc_ingest("foo", table, mode="append")
cur.execute("select * from foo")
data = cur.fetchall()
cur.execute("drop table if exists foo")
print(data)
```
produces output
```
pyarrow.Table
bar: decimal128(38, 9)
----
bar: [[0.010000000,0.200000000,3.000000000]]
===
[('0.10',), ('2.0',), ('30',)]
```
As you can see, values have been scaled by a factor of ten.
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