PyRSA opened a new pull request, #8561:
URL: https://github.com/apache/paimon/pull/8561
### Purpose
Introduce the listagg field aggregator for pypaimon.
This change adds support for the listagg aggregation function in the Python
reader, aligning its behavior with the Java implementation. It supports
configurable delimiters through `fields.<field-name>.list-agg-delimiter` and
optional deduplication via `ields.<field-name>.distinct`.
### Tests
pytest tests/test_field_aggregators.py::FieldListaggAggTest
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