In this PR, we will control whether the external data source query is a push-down function parameter in the filter condition, changing the enable_fun_pushdown of fe conf to the enable_ext_func_pred_pushdown of the variable
In this PR, we will control whether the external data source query is a push-down function parameter in the filter condition, changing the enable_fun_pushdown of fe conf to the enable_ext_func_pred_pushdown of the variable