Codeigniter count using month? - php

Question

The scenario is I am the admin and I have a session to make, the session table consists of a session_id, coach_name, date(format Y-m-d).
Now I want to count the total activity of the coach every "MONTH".
So my point is how will I get this kind of output in a SQL query.
The desired output is the amount of activity per month, per coach.
Name | No. of session this month
Coach_name1 = 13
Coach_name2 = 5
This is my current query that gives me the coach name but I don't know how to get for each MONTH
public function getAll(){
$query = $this->db->query('SELECT DISTINCT coach_name FROM sessions);
return $query->result();
}

Answer 1

Use this query to get the result.
Use mysql MONTH() to get Month number from date and group by it. You will get all month wise data.
SELECT coach_name,
Count(*) AS activities
FROM sessions
WHERE Month(date) = 8 //for specfic month
GROUP BY coach_name, Month(date) // for all months
Use this query to dynamincally get current month based on system date
SELECT coach_name,
Count(*) AS activities
FROM sessions
WHERE Month(date) = MONTH(CURRENT_DATE()) //for selecting current month.
GROUP BY coach_name

Answer 2

You have to prepare query like below:
select
coach_name,
month(your_date_field),
count(1)
from
your_table
where
month(your_date_field) = 8
group by
coach_name, month(your_date_field)
Which would return records like below,
| coach_name | month(your_date_field) | count(1) |
+---------------+------------------------+------------+
| Coach_name1 | 8 | x |
| Coach_name2 | 8 | x |
| Coach_name3 | 8 | x |
+---------------+------------------------+------------+
In codeigniter
$this->db->select("coach_name, month(your_date_field) as month_number,count(1) as counts");
$this->db->where('month(your_date_field)',8);
$this->db->group_by('coach_name,MONTH(your_date_field)');
$query = $this->db->get('your_table');
// results
foreach ($query->result_array() as $row)
{
// do this to see array
print_r($row);
// to access individual fields
echo $row['coach_name'];
echo $row['month_number'];
echo $row['counts'];
}

Answer 3

Use MySQL's MONTH() in your query. So basically if all your data is in your sessions table try the following in your query.
SELECT DISTINCT(`name`),COUNT(`name`) AS `activity` FROM `session`
WHERE MONTH(`date`)=8 GROUP BY `name`;
Check in SQLFiddle