avm19 commented on issue #3319:
URL: https://github.com/apache/arrow-adbc/issues/3319#issuecomment-3208628889
Before, I was able to do `cursor.executemany("INSERT INTO test1 (id, val)
VALUES ($1, $2);", [])` without any errors.
From looking at the old Python code, it seems that the passed empty Python
list `[]` would be automatically replaced by an empty batch
`pyarrow.record_batch([])` and then bound as a parameter to the prepared
statement. (I have no idea what happens next at a deeper level, in C code or in
libpq). In the new code no binding seems to take place, as the passed empty
list `[]` is replaced by `None`.
From reading the docstring of `executemany()`, I take away that parameter
value `None` has a special meaning, separate from `[]`. But `elif
seq_of_parameters: ` makes no distinction between them.
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