How to graph from these values?

Hi to all.
I have a mysql DB, i add the database to grafana and is working fine.
But, i have a problem i dont know have to solve.
I have this kind of Value (like “Fecha”) and want to have in my graph like “hourly repeats”. I dont care if it says 05:00, or 5am… what i want is have how many times does one incident per hour happen? I mean, to graph the values of hourly repeats having as input data those of “fecha”.

FECHA ///////////// Hourly Repeats
30/7/2019 05:44 ///////// 5 /////////1
30/7/2019 06:11 ///////// 6 /////////4
30/7/2019 06:14 ///////// 7 ////////6
30/7/2019 06:55
30/7/2019 06:56
30/7/2019 07:00
30/7/2019 07:20
30/7/2019 07:23
30/7/2019 07:24
30/7/2019 07:24
30/7/2019 07:58

Thanks to all!