ylqjgm
/
canvas-lms
mirror of https://github.com/instructure/canvas-lms.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Optimize quiz_student_visibilities view 

refs ADMIN-1270

Test plan
- Specs pass

Change-Id: I77b4a75a98ada099bd69ee10e073558fb0a23b47
Reviewed-on: https://gerrit.instructure.com/161470
Tested-by: Jenkins
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
QA-Review: Jeremy Stanley <jeremy@instructure.com>
Product-Review: Mysti Sadler <mysti@instructure.com>
This commit is contained in:
Mysti Sadler 2018-08-20 20:33:52 -06:00
parent 5def4e91d5
commit de5c843f2b
1 changed files with 151 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

151
db/migrate/20180821015649_optimize_quiz_student_visibility_view.rb Normal file
View File

@ -0,0 +1,151 @@
#
# Copyright (C) 2018 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
class OptimizeQuizStudentVisibilityView < ActiveRecord::Migration[5.1]
tag :postdeploy
def up
self.connection.execute(<<-SQL)
CREATE OR REPLACE VIEW #{connection.quote_table_name('quiz_student_visibilities')} AS
SELECT DISTINCT q.id as quiz_id,
e.user_id as user_id,
e.course_id as course_id
FROM #{Quizzes::Quiz.quoted_table_name} q
JOIN #{Enrollment.quoted_table_name} e
ON e.course_id = q.context_id
AND q.context_type = 'Course'
AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
AND e.workflow_state NOT IN ('deleted', 'rejected', 'inactive')
WHERE q.workflow_state NOT IN ('deleted','unpublished')
AND COALESCE(q.only_visible_to_overrides, 'false') = 'false'
UNION
SELECT DISTINCT q.id as quiz_id,
e.user_id as user_id,
e.course_id as course_id
FROM #{Quizzes::Quiz.quoted_table_name} q
JOIN #{Enrollment.quoted_table_name} e
ON e.course_id = q.context_id
AND q.context_type = 'Course'
AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
AND e.workflow_state NOT IN ('deleted', 'rejected', 'inactive')
INNER JOIN #{AssignmentOverride.quoted_table_name} ao
ON q.id = ao.quiz_id
AND ao.set_type = 'ADHOC'
INNER JOIN #{AssignmentOverrideStudent.quoted_table_name} aos
ON ao.id = aos.assignment_override_id
AND aos.user_id = e.user_id
WHERE ao.workflow_state = 'active'
AND aos.workflow_state <> 'deleted'
AND q.workflow_state NOT IN ('deleted','unpublished')
AND q.only_visible_to_overrides = 'true'
UNION
SELECT DISTINCT q.id as quiz_id,
e.user_id as user_id,
e.course_id as course_id
FROM #{Quizzes::Quiz.quoted_table_name} q
JOIN #{Enrollment.quoted_table_name} e
ON e.course_id = q.context_id
AND q.context_type = 'Course'
AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
AND e.workflow_state NOT IN ('deleted', 'rejected', 'inactive')
INNER JOIN #{AssignmentOverride.quoted_table_name} ao
ON e.course_section_id = ao.set_id
AND ao.set_type = 'CourseSection'
AND ao.quiz_id = q.id
WHERE q.workflow_state NOT IN ('deleted','unpublished')
AND q.only_visible_to_overrides = 'true'
AND ao.workflow_state = 'active'
UNION
SELECT DISTINCT q.id as quiz_id,
e.user_id as user_id,
e.course_id as course_id
FROM #{Quizzes::Quiz.quoted_table_name} q
JOIN #{Enrollment.quoted_table_name} e
ON e.course_id = q.context_id
AND q.context_type = 'Course'
AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
AND e.workflow_state NOT IN ('deleted', 'rejected', 'inactive')
INNER JOIN #{Assignment.quoted_table_name} a
ON q.assignment_id = a.id
INNER JOIN #{Submission.quoted_table_name} s
ON s.user_id = e.user_id
AND s.assignment_id = a.id
AND s.workflow_state <> 'deleted'
WHERE a.workflow_state NOT IN ('deleted', 'unpublished')
AND q.workflow_state NOT IN ('deleted','unpublished')
AND q.only_visible_to_overrides = 'true'
SQL
end
def down
self.connection.execute %(CREATE OR REPLACE VIEW #{connection.quote_table_name('quiz_student_visibilities')} AS
SELECT DISTINCT q.id as quiz_id,
e.user_id as user_id,
c.id as course_id
FROM #{Quizzes::Quiz.quoted_table_name} q
JOIN #{Course.quoted_table_name} c
ON q.context_id = c.id
AND q.context_type = 'Course'
JOIN #{Enrollment.quoted_table_name} e
ON e.course_id = c.id
AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
AND e.workflow_state != 'deleted'
JOIN #{CourseSection.quoted_table_name} cs
ON cs.course_id = c.id
AND e.course_section_id = cs.id
LEFT JOIN #{AssignmentOverrideStudent.quoted_table_name} aos
ON aos.quiz_id = q.id
AND aos.user_id = e.user_id
LEFT JOIN #{AssignmentOverride.quoted_table_name} ao
ON ao.quiz_id = q.id
AND ao.workflow_state = 'active'
AND (
(ao.set_type = 'CourseSection' AND ao.set_id = cs.id)
OR (ao.set_type = 'ADHOC' AND ao.set_id IS NULL AND ao.id = aos.assignment_override_id)
)
LEFT JOIN #{Assignment.quoted_table_name} a
ON a.context_id = q.context_id
AND a.submission_types LIKE 'online_quiz'
AND a.id = q.assignment_id
LEFT JOIN #{Submission.quoted_table_name} s
ON s.user_id = e.user_id
AND s.assignment_id = a.id
AND s.workflow_state != 'deleted'
WHERE q.workflow_state NOT IN ('deleted','unpublished')
AND(
( q.only_visible_to_overrides = 'true' AND (ao.id IS NOT NULL OR s.id IS NOT NULL))
OR (COALESCE(q.only_visible_to_overrides, 'false') = 'false')
)
)
end
end