get specific data along with group by - mysql

Question

I've a table named log.
Table: log
ID user_id time_of_action
I want to get result for each user for each date i.e. group by date,user_id.
So, here's the expected output structure:
user_id date occurred_in_afternoon occurred_at_night total_action_count
Explanation:
occurred_in_afternoon: whether any action of a user occurred in between 12:00 PM to 4:00 PM
occurred_at_night: whether any action of a user occurred between 8:00 PM to 12:00 AM (next day)
Schema and sample data:
DROP TABLE IF EXISTS `logs`;
CREATE TABLE `logs` (
`Id` int(11) NOT NULL AUTO_INCREMENT,
`user_id` int(11) DEFAULT NULL,
`time_of_action` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`Id`)
);
INSERT INTO `logs` VALUES ('1', '71', '2016-03-10 10:07:34');
INSERT INTO `logs` VALUES ('2', '66', '2016-03-10 14:07:57');
INSERT INTO `logs` VALUES ('3', '71', '2016-03-10 22:08:27');
INSERT INTO `logs` VALUES ('4', '71', '2016-03-10 15:08:40');
And here's my current query:
SELECT
user_id,
DATE(time_of_action) `date`,
CASE WHEN time_of_action BETWEEN TIMESTAMPADD(HOUR,12,DATE(time_of_action)) AND TIMESTAMPADD(HOUR,16,DATE(time_of_action)) THEN 1 ELSE 0 END occurred_in_afternoon,
CASE WHEN time_of_action BETWEEN TIMESTAMPADD(HOUR,20,DATE(time_of_action)) AND TIMESTAMPADD(HOUR,24,DATE(time_of_action)) THEN 1 ELSE 0 END occurred_at_night,
COUNT(*) total_action_count
FROM `logs`
GROUP BY `date`,user_id
my current output:
user_id date occurred_in_afternoon occurred_at_night total_action_count
66 2016-03-10 1 0 1
71 2016-03-10 0 0 3
Expected output:
user_id date occurred_in_afternoon occurred_at_night total_action_count
66 2016-03-10 1 0 1
71 2016-03-10 1 1 3
The problem is that I am not getting the expected result. I guess occurred in afternoon value is reset by another time_of_action which doesn't lie in that afternoon region.
And is it possible to implement it in a single query?

Answer 1

You missed to use an aggregate function. You can use MAX() or BIT_OR() for your purpose:
SELECT
user_id,
DATE(time_of_action) `date`,
MAX(CASE WHEN time_of_action BETWEEN TIMESTAMPADD(HOUR,12,DATE(time_of_action)) AND TIMESTAMPADD(HOUR,16,DATE(time_of_action)) THEN 1 ELSE 0 END) occurred_in_afternoon,
MAX(CASE WHEN time_of_action BETWEEN TIMESTAMPADD(HOUR,20,DATE(time_of_action)) AND TIMESTAMPADD(HOUR,24,DATE(time_of_action)) THEN 1 ELSE 0 END) occurred_at_night,
COUNT(*) total_action_count
FROM `logs`
GROUP BY `date`,user_id
Update: I would also prefer a more readable version like
SELECT
user_id,
DATE(time_of_action) `date`,
BIT_OR(TIME(time_of_action) BETWEEN '12:00:00' AND '16:00:00') occurred_in_afternoon,
BIT_OR(TIME(time_of_action) BETWEEN '20:00:00' AND '23:59:59') occurred_at_night,
COUNT(*) total_action_count
FROM `logs`
GROUP BY `date`,user_id

Answer 2

I was thinking to have an alias of the result table that I've got through SUM in order to get Binary value for those two fields.
SELECT
t.user_id,
t.date,
CASE WHEN t.occurred_in_afternoon > 0 THEN 1 ELSE 0 END AS occurred_in_afternoon,
CASE WHEN t.occurred_at_night > 0 THEN 1 ELSE 0 END AS occurred_at_night,
t.total_action_count
FROM
(SELECT
user_id,
DATE(time_of_action) `date`,
SUM(CASE WHEN time_of_action BETWEEN TIMESTAMPADD(HOUR,12,DATE(time_of_action)) AND TIMESTAMPADD(HOUR,16,DATE(time_of_action)) THEN 1 ELSE 0 END) occurred_in_afternoon,
SUM(CASE WHEN time_of_action BETWEEN TIMESTAMPADD(HOUR,20,DATE(time_of_action)) AND TIMESTAMPADD(HOUR,24,DATE(time_of_action)) THEN 1 ELSE 0 END) occurred_at_night,
COUNT(*) total_action_count
FROM `logs`
GROUP BY `date`,user_id) t