how to count min, max and average from this query mysql 5.7

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this is my fiddle https://dbfiddle.uk/?rdbms=mysql_5.7&fiddle=1dbde0d6227268a4eee4dee539a5d930

assume i have this table

CREATE TABLE test (
  ID INT,
  user_id INT,
  createdAt DATE,
  status_id INT
);

INSERT INTO test VALUES
  (1, 13, '2020-01-01', 8),
  (2, 13, '2020-01-03', 8),
  (3, 13, '2020-01-06', 8),
  (4, 13, '2020-01-02', 7),
  (5, 13, '2020-01-03', 7),
  (6, 14, '2020-03-03', 8),
  (7, 13, '2020-03-04', 4),
  (8, 15, '2020-04-04', 7),
  (9, 14, '2020-03-02', 6),
  (10, 14, '2020-03-10', 5),
  (11, 13, '2020-04-10', 8);

i want to count time different for every users in range date time that i need with this query

SELECT t1.user_id, 
       t1.createdAt cretecompare1, 
       t2.createdAt cretecompare2,
       DATEDIFF(t2.createdAt, t1.createdAt) diff
-- table for a transaction
FROM test t1
-- table for prev. transaction
JOIN test t2 ON t1.user_id = t2.user_id 
            AND t1.createdAt < t2.createdAt
            AND 7 NOT IN (t1.status_id, t2.status_id)
JOIN (SELECT t3.user_id
      FROM test t3
      WHERE t3.status_id != 7
      GROUP BY t3.user_id
      HAVING SUM(t3.createdAt < '2020-04-01') > 1
         AND SUM(t3.createdAt BETWEEN '2020-02-01' AND '2020-04-01')) t4 ON t1.user_id = t4.user_id
WHERE NOT EXISTS (SELECT NULL
                   FROM test t5
                   WHERE t1.user_id = t5.user_id
                     AND t5.status_id != 7
                     AND t1.createdAt < t5.createdAt
                     AND t5.createdAt < t2.createdAt) 
HAViNG cretecompare2  BETWEEN '2020-02-01' AND '2020-04-01';

after that, the results was like this

+----------+---------------+---------------+------+
|  user_id | cretecompare1 | cretecompare2 | diff |
+----------+---------------+---------------+------+
|       14 | 2020-03-02    | 2020-03-03    |    1 |
|       13 | 2020-01-06    | 2020-03-04    |   58 |
|       14 | 2020-03-03    | 2020-03-10    |    7 |
+----------+---------------+---------------+------+

i want to count the max diff, min diff and the average for diff with this query

SELECT t1.user_id, 
       t1.createdAt cretecompare1, 
       t2.createdAt cretecompare2,
       DATEDIFF(t2.createdAt, t1.createdAt) diff,
       MIN(DATEDIFF(t2.createdAt, t1.createdAt)) min_diff, 
       MAX(DATEDIFF(t2.createdAt, t1.createdAt)) max_diff, 
       AVG(DATEDIFF(t2.createdAt, t1.createdAt)) avg_diff
-- table for a transaction
FROM test t1
-- table for prev. transaction
JOIN test t2 ON t1.user_id = t2.user_id 
            AND t1.createdAt < t2.createdAt
            AND 7 NOT IN (t1.status_id, t2.status_id)
JOIN (SELECT t3.user_id
      FROM test t3
      WHERE t3.status_id != 7
      GROUP BY t3.user_id
      HAVING SUM(t3.createdAt < '2020-04-01') > 1
         AND SUM(t3.createdAt BETWEEN '2020-02-01' AND '2020-04-01')) t4 ON t1.user_id = t4.user_id
WHERE NOT EXISTS (SELECT NULL
                   FROM test t5
                   WHERE t1.user_id = t5.user_id
                     AND t5.status_id != 7
                     AND t1.createdAt < t5.createdAt
                     AND t5.createdAt < t2.createdAt) 
HAViNG cretecompare2  BETWEEN '2020-02-01' AND '2020-04-01'

and its says

In aggregated query without GROUP BY, expression #1 of SELECT list contains nonaggregated column 'db_2015623402.t1.user_id'; this is incompatible with sql_mode=only_full_group_by

expected results

+-----+-----+---------+
| MIN | MAX | AVERAGE |
+-----+-----+---------+
|   1 |  58 |      22 |
+-----+-----+---------+
mysql
1 Answers

This will do the trick. You are looking for a summary of data within the data you have so you can wrap it in SELECT (), give the whole thing an alias at the end (t) and use the functions like min(), max(), and avg() like normal.

SELECT min(diff) as min, max(diff) as max, format(avg(diff),0) as avg  FROM (SELECT t1.user_id, 
       t1.createdAt cretecompare1, 
       t2.createdAt cretecompare2,
       DATEDIFF(t2.createdAt, t1.createdAt) diff
-- table for a transaction
FROM test t1
-- table for prev. transaction
JOIN test t2 ON t1.user_id = t2.user_id 
            AND t1.createdAt < t2.createdAt
            AND 7 NOT IN (t1.status_id, t2.status_id)
JOIN (SELECT t3.user_id
      FROM test t3
      WHERE t3.status_id != 7
      GROUP BY t3.user_id
      HAVING SUM(t3.createdAt < '2020-04-01') > 1
         AND SUM(t3.createdAt BETWEEN '2020-02-01' AND '2020-04-01')) t4 ON t1.user_id = t4.user_id
WHERE NOT EXISTS (SELECT NULL
                   FROM test t5
                   WHERE t1.user_id = t5.user_id
                     AND t5.status_id != 7
                     AND t1.createdAt < t5.createdAt
                     AND t5.createdAt < t2.createdAt) 
HAViNG cretecompare2  BETWEEN '2020-02-01' AND '2020-04-01') t
user_41012100
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