Class hvPlotTabularDuckDB

hvplot/plotting/core.py:1483–1579

class hvPlotTabularDuckDB(hvPlotTabular):
    def _get_converter(self, x=None, y=None, kind=None, **kwds):
        import duckdb

        if Version(duckdb.__version__).release < (1, 4, 1):
            from duckdb.typing import (
                BIGINT,
                FLOAT,
                DOUBLE,
                INTEGER,
                SMALLINT,
                TINYINT,
                UBIGINT,
                UINTEGER,
                USMALLINT,
                UTINYINT,
                HUGEINT,
            )
        else:
            from duckdb.sqltypes import (
                BIGINT,
                FLOAT,
                DOUBLE,
                INTEGER,
                SMALLINT,
                TINYINT,
                UBIGINT,
                UINTEGER,
                USMALLINT,
                UTINYINT,
                HUGEINT,
            )

        params = dict(self._metadata, **kwds)
        x = x or params.pop('x', None)
        y = y or params.pop('y', None)
        kind = kind or params.pop('kind', None)

        # Handle DuckDB Relation and Connection objects
        if isinstance(self._data, (duckdb.DuckDBPyConnection, duckdb.DuckDBPyRelation)):
            if isinstance(self._data, duckdb.DuckDBPyConnection):
                data = self._data.df()
            else:
                data = self._data

            if params.get('hover_cols') != 'all':
                data_columns = data.columns
                possible_columns = [
                    [v] if isinstance(v, str) else v
                    for v in params.values()
                    if isinstance(v, (str, list))
                ]

                columns = (set(data_columns) & set(itertools.chain(*possible_columns))) or {
                    data_columns[0]
                }
                if y is None:
                    # When y is not specified HoloViewsConverter finds all the numeric