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CREATE TABLE table_a (timestamp datetime) ; INSERT INTO table_a (timestamp) VALUES ('2020-11-28 04:00:00'), ('2020-11-28 05:00:00'), ('2020-11-29 01:00:00'), ('2020-11-29 02:00:00'), ('2020-11-29 03:00:00') ;
SELECT CAST(DATE(timestamp) AS DATETIME) AS my_datetime, COUNT(*) AS count FROM table_a GROUP BY my_datetime;
my_datetime
count
2020-11-28 00:00:00
2
2020-11-29 00:00:00
3