what does it mean when there's no submission_fact entry for a submission_dim?

[pmichaud]

I stumbled over these while trying to do some aggregate functions.  There are 45,588 entries in my submission_dim table that don't have a match in the submission_fact table.  Does this mean something specific?  Is it a data error?

Here is an example:

canvas=> select * from submission_dim where id = 100000024123908;
-[ RECORD 1 ]--------------------+---------------------------
id                               | 100000024123908
canvas_id                        | 24123908
body                             | 
url                              | 
grade                            | 2
submitted_at                     | 
submission_type                  | 
workflow_state                   | graded
created_at                       | 2015-05-01 05:52:55.666434
updated_at                       | 2015-05-01 05:52:55.666434
processed                        | 
process_attempts                 | 0
grade_matches_current_submission | 
published_grade                  | 2
graded_at                        | 2015-05-01 05:52:55.52155
has_rubric_assessment            | 
attempt                          | 
has_admin_comment                | 

canvas=> select * from submission_fact  where submission_id = 100000024123908;

(No rows)

Since course, assignment, user and so on are in the _fact table, it's hard to tell what the source of this entry is.

[zac · Accepted solution]

Hi Patrick,

Seems like this is something I remember being an issue earlier this year, where the submission_fact and submission_dim tables didn't have the same count in the test instance I was using. Just checked today and the count currently matches up now. Can you let us know if you're still seeing this issue?

Thanks!