Is it possible and how to make a query in the database to get statistical data?

Question

MySQL

I have the following task. There are two tables shopsand usersboth tables have a field create_dateof type timestamp. I need to get information about the number of rows added to these two tables by day. Those. as a result, I want to get a table like:

+---------------+------------+--------+
|     Date      |    Shops   | Users  |
+---------------+------------+--------+
| 01.01.2020    | 123        |    215 |
| 02.01.2020    | 314        |     22 |
| 03.01.2020    | 18         |     45 |
+---------------+------------+--------+

Is it possible to do this through sql and if possible, tell me how?
Thanks in advance to all who respond.

Answer 1

WITH RECURSIVE
cte1 AS ( SELECT MIN(DATE(create_date)) mindate, MAX(DATE(create_date)) maxdate
          FROM shops
          UNION ALL
          SELECT MIN(DATE(create_date)) mindate, MAX(DATE(create_date)) maxdate
          FROM users ),
cte2 AS ( SELECT MIN(mindate) mindate, MAX(maxdate) maxdate
          FROM cte1 ),
dates AS ( SELECT mindate thedate, maxdate
           FROM cte2
           UNION ALL
           SELECT thedate + INTERVAL 1 DAY, maxdate
           FROM dates
           WHERE thedate < maxdate ),
shopstat AS ( SELECT DATE(create_date) thedate, COUNT(*) cnt
              FROM shops
              GROUP BY thedate ),
userstat AS ( SELECT DATE(create_date) thedate, COUNT(*) cnt
              FROM users
              GROUP BY thedate )
SELECT thedate `date`, 
       COALESCE(shopstat.cnt, 0) shops, 
       COALESCE(userstat.cnt, 0) users
FROM dates
LEFT JOIN shopstat USING (thedate)
LEFT JOIN userstat USING (thedate)

If you need data for a certain period - remove cte1 and cte2 , use the range boundaries in dates (the maxdate field is not needed, remove), add resp. WHERE to other CTEs.