Moodle

Intermittent error from the quiz reports on MySQL because of subtracting two unsigned columns

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 1.9.11
  • Fix Version/s: 1.9.12
  • Component/s: Quiz
  • Environment:
    mysql 5.5.9, moodle 1.9.11+
  • Database:
    MySQL
  • Testing Instructions:
    Hide

    You need a quiz with some student attempts on an 1.9.x install using MySQL > 5.5.5. Make sure you can go to the quiz overview report without errors, and that the durations are displayed correctly.

    It would be good to also test an install using the minimum version of MySQL that Moodle 1.9 is meant to support.

    Show
    You need a quiz with some student attempts on an 1.9.x install using MySQL > 5.5.5. Make sure you can go to the quiz overview report without errors, and that the durations are displayed correctly. It would be good to also test an install using the minimum version of MySQL that Moodle 1.9 is meant to support.
  • Affected Branches:
    MOODLE_19_STABLE
  • Fixed Branches:
    MOODLE_19_STABLE
  • Pull from Repository:

Description

I am using mysql 5.5.9. I found that same issue was discussed
at http://tracker.moodle.org/browse/MDL-26416, but for moodle 1.9.11+.
The solution seems to be posted at https://github.com/moodle/moodle/blob/master/mod/quiz/report/overview/report.php#L210.

I wonder the patch will be available for moodle 1.9.11+ soon.

Thanks.

Issue Links

has been marked as being related by

Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-26416 Intermittent error from the quiz reports on MySQL because of subtracting two unsigned columns

  • Critical - Crashes server, loss of data, severe memory leak
  • Closed - The issue is considered finished, the resolution is correct. Issues which are closed should not be reopened.
is duplicated by

Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-29735 Unable to view assignment and quiz submission results

  • Major - Major loss of function, incorrect output
  • Closed - The issue is considered finished, the resolution is correct. Issues which are closed should not be reopened.

Activity

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Paul Nijbakker added a comment -

Ah, I found it at last. I knew there had to be an entry in the tracker for this. We experience the same problem (which according to Tim occurs with all MySql versions since 5.5.5 (we have 5.5.11). We hope this issue can be solved in Moodle 1.9.12 along with the similar issue in the assignment module.

Show
Paul Nijbakker added a comment - Ah, I found it at last. I knew there had to be an entry in the tracker for this. We experience the same problem (which according to Tim occurs with all MySql versions since 5.5.5 (we have 5.5.11). We hope this issue can be solved in Moodle 1.9.12 along with the similar issue in the assignment module.
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Tim Hunt added a comment -

It is basically the same fix as before: https://github.com/timhunt/moodle/commit/71ec5d19df4f506ca810cd55e25ebca4c5b94962

Are you in a position where you can test that change? It would be nice to have independent confirmation before I forward this for integration.

Show
Tim Hunt added a comment - It is basically the same fix as before: https://github.com/timhunt/moodle/commit/71ec5d19df4f506ca810cd55e25ebca4c5b94962 Are you in a position where you can test that change? It would be nice to have independent confirmation before I forward this for integration.
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Tim Hunt added a comment -

Just getting the workflow into the right state.

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Tim Hunt added a comment - Just getting the workflow into the right state.
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Paul Nijbakker added a comment -

I will try it out.

Show
Paul Nijbakker added a comment - I will try it out.
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Paul Nijbakker added a comment -

Yup, it works. Big thanks Tim and have a nice labour day weekend!

P.S. Will this fix make it into 1.9.12?

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Paul Nijbakker added a comment - Yup, it works. Big thanks Tim and have a nice labour day weekend! P.S. Will this fix make it into 1.9.12?
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Tim Hunt added a comment -

Should get in. Thanks for your testing.

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Tim Hunt added a comment - Should get in. Thanks for your testing.
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Eloy Lafuente (stronk7) added a comment -

Integrated, thanks!

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Eloy Lafuente (stronk7) added a comment - Integrated, thanks!
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David Mudrak added a comment -

Test passed on MySQL 4.1.22 with the attempt end time set manually 60 secs before the start time. The reported attempt time is 1 minute. Testing at MySQL 5.5.10 now...

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David Mudrak added a comment - Test passed on MySQL 4.1.22 with the attempt end time set manually 60 secs before the start time. The reported attempt time is 1 minute. Testing at MySQL 5.5.10 now...
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David Mudrak added a comment -

Done. I was able to reproduce the bug and see it is fixed in the integration repository.

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David Mudrak added a comment - Done. I was able to reproduce the bug and see it is fixed in the integration repository.
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Eloy Lafuente (stronk7) added a comment -

Closing as fixed. Many thanks!

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Eloy Lafuente (stronk7) added a comment - Closing as fixed. Many thanks!
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miki Alliel added a comment -

Thanks Tim - this worked to me too .
it fixed me this bug:
'(`BIGINT UNSIGNED value is out of range in '(`moodle`.`qa`.`timefinish` - `moodle`.`qa.`timestart SELECT CONCAT (u.id,'#', IFNULL (qa.attampt, 0)) AS uniqueid,(CASE WHEN qa.sumgrades = ….

Thanks!

Show
miki Alliel added a comment - Thanks Tim - this worked to me too . it fixed me this bug: '(`BIGINT UNSIGNED value is out of range in '(`moodle`.`qa`.`timefinish` - `moodle`.`qa.`timestart SELECT CONCAT (u.id,'#', IFNULL (qa.attampt, 0)) AS uniqueid,(CASE WHEN qa.sumgrades = …. Thanks!

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Dates

  • Created:
    Updated:
    Resolved: