Get total views per day including leaving “0 views” for a day that has no record

Question

I am creating a graph where I can get the total views everyday for a certain range, or as long it goes back.

The problem I am having is to fill a default number of

Answer 1

When I did this a couple of years ago I created an empty array with the date as key and the default value 0. Then I simply looped through the result att changed the value for those dates I had.

for each($result as $row){
   $date_stats_array[$row['date']] = $row['value'];
}

Answer 2

In situations like this I create a temporary table which I fill with all the dates you want. After that, you can use that table to join your original query against.

To fill the table you can use this procedure:

DROP PROCEDURE IF EXISTS filldates;
DELIMITER |
CREATE PROCEDURE filldates(dateStart DATE, dateEnd DATE)
BEGIN
  WHILE dateStart <= dateEnd DO
    INSERT INTO tablename (_date) VALUES (dateStart);
    SET dateStart = date_add(dateStart, INTERVAL 1 DAY);
  END WHILE;
END;
|
DELIMITER ;
CALL filldates('2011-01-01','2011-12-31');

Courtesy of https://stackoverflow.com/a/10132142/375087