MDL-84135 completion: correct entity table name to match schema.

.upgradenotes/MDL-78118-2024100717482890.yml

@@ -16,7 +16,7 @@ notes:
 
         - `enrolment:method` (plus enrolment formatter `enrolment_name` method)
 
-        - 'enrolment:role`
+        - `enrolment:role`
 
         - `file:context`
 

.upgradenotes/MDL-84135-2025010820040470.yml

@@ -0,0 +1,7 @@
+issueNumber: MDL-84135
+notes:
+  core_reportbuilder:
+    - message: >-
+        Use of the `course_completion` table is deprecated in the `completion`
+        entity, please use `course_completions` instead
+      type: deprecated

course/classes/reportbuilder/datasource/participants.php

@@ -132,7 +132,7 @@ class participants extends datasource {
                 'course' => $course,
                 'user' => $user,
             ]);
-        $completion = $completionentity->get_table_alias('course_completion');
+        $completion = $completionentity->get_table_alias('course_completions');
         $this->add_entity($completionentity
             ->add_joins($userentity->get_joins())
             ->add_join("

course/classes/reportbuilder/local/entities/completion.php

@@ -48,14 +48,25 @@ class completion extends base {
      */
     protected function get_default_tables(): array {
         return [
-            'course_completion',
             'course',
+            'course_completions',
             'grade_grades' ,
             'grade_items',
             'user',
         ];
     }
 
+    /**
+     * Database tables that this entity no longer uses
+     *
+     * @return string[]
+     */
+    protected function get_deprecated_tables(): array {
+        return [
+            'course_completions' => 'course_completion',
+        ];
+    }
+
     /**
      * The default title for this entity in the list of columns/conditions/filters in the report builder
      *
@@ -92,8 +103,8 @@ class completion extends base {
      */
     protected function get_all_columns(): array {
         [
-            'course_completion' => $coursecompletion,
             'course' => $course,
+            'course_completions' => $coursecompletion,
             'grade_grades' => $grade,
             'grade_items' => $gradeitem,
             'user' => $user,
@@ -295,7 +306,7 @@ class completion extends base {
      * @return filter[]
      */
     protected function get_all_filters(): array {
-        $coursecompletion = $this->get_table_alias('course_completion');
+        $coursecompletion = $this->get_table_alias('course_completions');
 
         // Completed status filter.
         $filters[] = (new filter(