code: def execute(self, expr, params=None, limit='default', **kwargs):
          
          query_ast = self._build_ast_ensure_limit(expr, limit, params=params)
          result = self._execute_query(query_ast, **kwargs)
          return result
docs: Compile and execute Ibis expression using this backend client
          interface, returning results in-memory in the appropriate object type
  
          Parameters
          ----------
          expr : Expr
          limit : int, default None
            For expressions yielding result yets; retrieve at most this number of
            values/rows. Overrides any limit already set on the expression.
          params : not yet implemented
  
          Returns
          -------
          output : input type dependent
            Table expressions: pandas.DataFrame
            Array expressions: pandas.Series
            Scalar expressions: Python scalar value