Surpassing MySQL's TIME value limit of 838:59:59

Question

The title might be a bit confusing so allow me to explain. I\'m using a table to record my work logs. Every day I\'ll create an entry stating from what time to what time I h

Answer 1

Counting the days separately is enough.
Here's the concatenation I used.

I illustrated with a fully copy/pastable example to ease the understanding of the limit we hit (TIME format's max value)
A free unicorn is bundled to simplify comma management

SELECT 'pq7~' AS unicorn
#######################
##  Expected result  ##
#######################
## Total, formatted as days:hh:mm:ss ##
  ,CONCAT(
    FLOOR(TIMESTAMPDIFF(SECOND, '2017-01-01 09:17:45', '2017-03-07 17:06:24') / 86400)
    , ':'
    , SEC_TO_TIME(TIMESTAMPDIFF(SECOND, '2017-01-01 09:17:45', '2017-03-07 17:06:24') % 86400)
  ) AS Real_expected_result

---

#########################
## Calculation details ##
#########################
## Extracted days from diff ##
  ,FLOOR(TIMESTAMPDIFF(SECOND, '2017-01-01 09:17:45', '2017-03-07 17:06:24') / 86400) AS Real_days
## Extracted Hours/minutes/seconds from diff ##
  ,SEC_TO_TIME(TIMESTAMPDIFF(SECOND, '2017-01-01 09:17:45', '2017-03-07 17:06:24') % 86400) AS Real_hours_minutes_seconds

---

###################################
## Demo of wrong values returned ##
###################################
  ,TIMESTAMPDIFF(SECOND, '2017-01-01 09:17:45', '2017-03-07 17:06:24') AS Real_seconds_diff

## WRONG value returned. 5.64M is truncated to 3.02 ! ##
  ,TIME_TO_SEC(SEC_TO_TIME(5644119)) AS WRONG_result

## Result is effectively limited to 838h59m59s ##
  ,SEC_TO_TIME(TIMESTAMPDIFF(SECOND, '2017-01-01 09:17:45', '2017-03-07 17:06:24')) AS Limit_hit

## Lights on said limit ##
  ,SEC_TO_TIME( 3020398) AS Limit_value_check1
  ,SEC_TO_TIME( 3020400) AS Limit_value_check2

Answer 2

I'd just retrieve the total number of seconds worked, and convert to hours/minutes as required in the presentation layer of my application (it is, after all, a simple case of division by 60):

<?
  $dbh = new PDO("mysql:dbname=$dbname", $username, $password);
  $dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, FALSE);

  $qry = $dbh->prepare('
    SELECT SUM(TIME_TO_SEC(entry_end_time)-TIME_TO_SEC(entry_start_time))
    FROM   entry 
    WHERE  entry_date BETWEEN :start_date AND :end_date
       AND user_id = :user_id
  ');

  $qry->execute([
    ':start_date' => '2012-01-01',
    ':end_date'   => '2012-12-31',
    ':user_id'    => 3
  ]);

  list ($totalMins, $remngSecs) = gmp_div_qr($qry->fetchColumn(), 60);
  list ($totalHour, $remngMins) = gmp_div_qr($totalMins, 60);

  echo "Worked a total of $totalHour:$remngMins:$remngSecs.";
?>

Answer 3

First calculating the days difference then multiply it with 24*60*60 to convert it into seconds then add to it time_to_sec value result

DATEDIFF(start_date,end_date)*24*60*60 + TIME_TO_SEC(TIMEDIFF(TIME(start_date),TIME(end_date))) 
AS sec_diff

For more details check codebucket- Surpassing time_to_sec() function maximum limit

Answer 4

Some simple math can do the trick,I hardcoded a random number of seconds(10000000)

SELECT CONCAT(FLOOR(10000000/3600),':',FLOOR((10000000%3600)/60),':',(10000000%3600)%60)

Fiddle

2777:46:40

Answer 5

select  concat(truncate(sum(time_to_sec(TIMEDIFF(hora_fim, hora_ini)))/3600,0), ':', 
TIME_FORMAT(sec_to_time(sum(time_to_sec(TIMEDIFF(hora_fim, hora_ini))) - truncate(sum(time_to_sec(TIMEDIFF(hora_fim, hora_ini)))/3600,0)*3600), '%i:%s'))
as hms from  tb_XXXXXX

Answer 6

Have a look at timestampdiff which doesn't have the TIME limitation. I.e. something like (untested):

SELECT CONCAT(
        TIMESTAMPDIFF(HOURS, entry_end_time, entry_start_time), 
        ":",
        MOD(TIMESTAMPDIFF(MINUTES, entry_end_time, entry_start_time),60)
      )
AS total FROM entry 
WHERE entry_date BETWEEN '2012-01-01' AND '2012-12-31' AND user_id = 3

The concats not ideal, I'm sure there will be a more elegant solution.