An exception should be thrown when aggregate function and data type do not match

Hi IoTDBers,

 When I usingiotdb-cli in master branch,I hava a confuse.

First, I have many timeseries in my IoTDB,

Second, I use SQL: select min_value(s_1) from root.test.g_0.d_0 group by ([now() - 80s, now()), 10s) ,I got a result set like below:

But If I use SQL : select min_value(s_1) from root.test.g_0.d_0 (wtihout group by), I got an error meaasge:

Please help us to check this.Which one is right.

Thanks.

B.R.