Table: Views
+---------------+---------+ | Column Name | Type | +---------------+---------+ | article_id | int | | author_id | int | | viewer_id | int | | view_date | date | +---------------+---------+ There is no primary key for this table, it may have duplicate rows. Each row of this table indicates that some viewer viewed an article (written by some author) on some date. Note that equal author_id and viewer_id indicate the same person.
Write an SQL query to find all the people who viewed more than one article on the same date.
Return the result table sorted by id in ascending order.
The query result format is in the following example.
Example 1:
Input: Views table: +------------+-----------+-----------+------------+ | article_id | author_id | viewer_id | view_date | +------------+-----------+-----------+------------+ | 1 | 3 | 5 | 2019-08-01 | | 3 | 4 | 5 | 2019-08-01 | | 1 | 3 | 6 | 2019-08-02 | | 2 | 7 | 7 | 2019-08-01 | | 2 | 7 | 6 | 2019-08-02 | | 4 | 7 | 1 | 2019-07-22 | | 3 | 4 | 4 | 2019-07-21 | | 3 | 4 | 4 | 2019-07-21 | +------------+-----------+-----------+------------+ Output: +------+ | id | +------+ | 5 | | 6 | +------+
# Write your MySQL query statement below
SELECT
DISTINCT(viewer_id) as id
FROM
Views
GROUP BY
view_date, viewer_id
HAVING
COUNT(DISTINCT(article_id)) > 1
ORDER BY
id;