add write database function

            area_deg2=self.get_area(),

            nmin=nmin,

        )

    def write_database(

        self, name_table: str, filename_database: str, debug=False, blocksize=4096, *args, **kwargs

    ):

        """

        Write the combined catalog into a sqlite3 database table.

        Parameters

        ----------

        name_table: str

            name of the database table

        filename_database: str

            filename of the sqlite3 database

        """

        import sqlite3

        from astropy.table import Table

        if os.path.exists(filename_database):

            raise FileExistsError(f"Filename {filename_database} exists. Will not overwrite.")

        with sqlite3.connect(filename_database) as con:

            for fst in range(0, len(self.catalog_combined), blocksize):

                lst = fst + blocksize

                logger.info(f"ingesting {filename_database} {name_table} {fst} {lst} ...")

                df = Table(self.catalog_combined[fst:lst]).to_pandas()

                df = df.reset_index(drop=True)

                df.to_sql(

                    f"{name_table}",

                    con,

                    index=False,

                    if_exists="append",

                    chunksize=1024,

                    method="multi",

                )

        return df