def __init__(self, table_name, schema, database=None, max_rows=None):
    self.table_name = table_name
    self.database = database
    self.schema = schema
    self.max_rows = max_rows
def __init__(self, table_name, schema, database=None, max_rows=None):
    self.table_name = table_name
    self.database = database
    self.schema = schema
    self.max_rows = max_rows