Closed
Description
Environment
Delta-rs version:
python = "^3.11"
deltalake = "^0.13.0"
pandas = "^2.1.3"
Environment:
- OS: Ubuntu
Bug
What happened:
_internal.DeltaError: Generic DeltaTable error: Schema error: No field named source.y. Valid fields are source.x, source."Y", source.__delta_rs_source, target.x, target."Y", target.__delta_rs_target.
What you expected to happen:
Successful merge.
How to reproduce it:
from deltalake import DeltaTable, write_deltalake
import pyarrow as pa
data = pa.table({"x": [1, 2, 3], "Y": [4, 5, 6]})
write_deltalake(tmp_path, data)
dt = DeltaTable(tmp_path)
new_data = pa.table({"x": [1], "Y": [7]})
(
dt.merge(
source=new_data,
predicate="target.x = source.x",
source_alias="source",
target_alias="target")
.when_matched_update_all()
.execute()
)
More details:
Note that the delta table was originally created with an uppercase Y column. This was intentional.
Activity