Holds an aggregate of page view stats for a course and differnet types of devices for a given day. For example, this table can be used to figure out what browsers people are using on the courses usually.
| Name | Type | Default | Nullable | Children | Parents | Comment |
|---|---|---|---|---|---|---|
| browser | varchar(255) | true | What browser the visitor was using e.g. Firefox. | |||
| browser_version | varchar(255) | true | What what was the version of the browser the visitor was using e.g. 252.0 | |||
| course_id | uuid | true | public.courses | If the statistic is for a course, the course that the page belongs to. | ||
| created_at | timestamp with time zone | now() | false | Timestamp when the record was created. | ||
| deleted_at | timestamp with time zone | true | Timestamp when the record was deleted. If null, the record is not deleted. | |||
| device_type | varchar(255) | true | What kind of device the user was using e.g. mobile or pc. | |||
| exam_id | uuid | true | public.exams | If the statistic is for an exam, the exam that the page belongs to. | ||
| id | uuid | uuid_generate_v4() | false | A unique, stable identifier for the record. | ||
| num_visitors | integer | 0 | false | The number of visitors that visited the page with the given referrer | ||
| operating_system | varchar(255) | true | What was the visitor’s operating system e.g. Linux | |||
| updated_at | timestamp with time zone | now() | false | Timestamp when the record was last updated. The field is updated automatically by the set_timestamp trigger. | ||
| visit_date | date | false | The date that the page was visited |
| Name | Type | Definition |
|---|---|---|
| exam_xor_course_id | CHECK | CHECK ((num_nonnulls(course_id, exam_id) = 1)) |
| num_visitors_positive | CHECK | CHECK ((num_visitors >= 0)) |
| page_visit_datum_summary_by_courses_device_types_course_id_fkey | FOREIGN KEY | FOREIGN KEY (course_id) REFERENCES courses(id) |
| page_visit_datum_summary_by_courses_device_types_exam_id_fkey | FOREIGN KEY | FOREIGN KEY (exam_id) REFERENCES exams(id) |
| page_visit_datum_summary_by_courses_device_types_pkey | PRIMARY KEY | PRIMARY KEY (id) |
| pvdsbcdt_no_duplicate_data | UNIQUE | UNIQUE NULLS NOT DISTINCT (course_id, exam_id, visit_date, browser, browser_version, operating_system, device_type, deleted_at) |
| Name | Definition |
|---|---|
| page_visit_datum_summary_by_courses_device_types_pkey | CREATE UNIQUE INDEX page_visit_datum_summary_by_courses_device_types_pkey ON public.page_visit_datum_summary_by_courses_device_types USING btree (id) |
| pvdsbcdt_no_duplicate_data | CREATE UNIQUE INDEX pvdsbcdt_no_duplicate_data ON public.page_visit_datum_summary_by_courses_device_types USING btree (course_id, exam_id, visit_date, browser, browser_version, operating_system, device_type, deleted_at) NULLS NOT DISTINCT |
| Name | Definition |
|---|---|
| set_timestamp | CREATE TRIGGER set_timestamp BEFORE UPDATE ON public.page_visit_datum_summary_by_courses_device_types FOR EACH ROW EXECUTE FUNCTION trigger_set_timestamp() |
Generated by tbls