Did you ever find an answer to this? I am running into a similar issue, where I have made a heatmap using a table, but the days dissapear when there is no hour data, and the VP’s are demanding the days always show…even though, it logically makes sense as to why they are gone.
I attempted to do a subquery like so, but it failed, as I do not think Grafana can handle something like this…and I cannot add dummy data to the source mariadb.
CREATE TEMPORARY TABLE HelperTable AS
(
SELECT ‘Sunday’ AS day_name, 1 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Sunday’, 1, 1
UNION ALL SELECT ‘Sunday’, 1, 2
UNION ALL SELECT ‘Sunday’, 1, 3
UNION ALL SELECT ‘Sunday’, 1, 4
UNION ALL SELECT ‘Sunday’, 1, 5
UNION ALL SELECT ‘Sunday’, 1, 6
UNION ALL SELECT ‘Sunday’, 1, 7
UNION ALL SELECT ‘Sunday’, 1, 8
UNION ALL SELECT ‘Sunday’, 1, 9
UNION ALL SELECT ‘Sunday’, 1, 10
UNION ALL SELECT ‘Sunday’, 1, 11
UNION ALL SELECT ‘Sunday’, 1, 12
UNION ALL SELECT ‘Sunday’, 1, 13
UNION ALL SELECT ‘Sunday’, 1, 14
UNION ALL SELECT ‘Sunday’, 1, 15
UNION ALL SELECT ‘Sunday’, 1, 16
UNION ALL SELECT ‘Sunday’, 1, 17
UNION ALL SELECT ‘Sunday’, 1, 18
UNION ALL SELECT ‘Sunday’, 1, 19
UNION ALL SELECT ‘Sunday’, 1, 20
UNION ALL SELECT ‘Sunday’, 1, 21
UNION ALL SELECT ‘Sunday’, 1, 22
UNION ALL SELECT ‘Sunday’, 1, 23
)
UNION ALL
(
SELECT ‘Monday’ AS day_name, 2 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Monday’, 2, 1
UNION ALL SELECT ‘Monday’, 2, 2
UNION ALL SELECT ‘Monday’, 2, 3
UNION ALL SELECT ‘Monday’, 2, 4
UNION ALL SELECT ‘Monday’, 2, 5
UNION ALL SELECT ‘Monday’, 2, 6
UNION ALL SELECT ‘Monday’, 2, 7
UNION ALL SELECT ‘Monday’, 2, 8
UNION ALL SELECT ‘Monday’, 2, 9
UNION ALL SELECT ‘Monday’, 2, 10
UNION ALL SELECT ‘Monday’, 2, 11
UNION ALL SELECT ‘Monday’, 2, 12
UNION ALL SELECT ‘Monday’, 2, 13
UNION ALL SELECT ‘Monday’, 2, 14
UNION ALL SELECT ‘Monday’, 2, 15
UNION ALL SELECT ‘Monday’, 2, 16
UNION ALL SELECT ‘Monday’, 2, 17
UNION ALL SELECT ‘Monday’, 2, 18
UNION ALL SELECT ‘Monday’, 2, 19
UNION ALL SELECT ‘Monday’, 2, 20
UNION ALL SELECT ‘Monday’, 2, 21
UNION ALL SELECT ‘Monday’, 2, 22
UNION ALL SELECT ‘Monday’, 2, 23
)
UNION ALL
(
SELECT ‘Tuesday’ AS day_name, 2 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Tuesday’, 3, 1
UNION ALL SELECT ‘Tuesday’, 3, 2
UNION ALL SELECT ‘Tuesday’, 3, 3
UNION ALL SELECT ‘Tuesday’, 3, 4
UNION ALL SELECT ‘Tuesday’, 3, 5
UNION ALL SELECT ‘Tuesday’, 3, 6
UNION ALL SELECT ‘Tuesday’, 3, 7
UNION ALL SELECT ‘Tuesday’, 3, 8
UNION ALL SELECT ‘Tuesday’, 3, 9
UNION ALL SELECT ‘Tuesday’, 3, 10
UNION ALL SELECT ‘Tuesday’, 3, 11
UNION ALL SELECT ‘Tuesday’, 3, 12
UNION ALL SELECT ‘Tuesday’, 3, 13
UNION ALL SELECT ‘Tuesday’, 3, 14
UNION ALL SELECT ‘Tuesday’, 3, 15
UNION ALL SELECT ‘Tuesday’, 3, 16
UNION ALL SELECT ‘Tuesday’, 3, 17
UNION ALL SELECT ‘Tuesday’, 3, 18
UNION ALL SELECT ‘Tuesday’, 3, 19
UNION ALL SELECT ‘Tuesday’, 3, 20
UNION ALL SELECT ‘Tuesday’, 3, 21
UNION ALL SELECT ‘Tuesday’, 3, 22
UNION ALL SELECT ‘Tuesday’, 3, 23
)
UNION ALL
(
SELECT ‘Wednesday’ AS day_name, 2 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Wednesday’, 4, 1
UNION ALL SELECT ‘Wednesday’, 4, 2
UNION ALL SELECT ‘Wednesday’, 4, 3
UNION ALL SELECT ‘Wednesday’, 4, 4
UNION ALL SELECT ‘Wednesday’, 4, 5
UNION ALL SELECT ‘Wednesday’, 4, 6
UNION ALL SELECT ‘Wednesday’, 4, 7
UNION ALL SELECT ‘Wednesday’, 4, 8
UNION ALL SELECT ‘Wednesday’, 4, 9
UNION ALL SELECT ‘Wednesday’, 4, 10
UNION ALL SELECT ‘Wednesday’, 4, 11
UNION ALL SELECT ‘Wednesday’, 4, 12
UNION ALL SELECT ‘Wednesday’, 4, 13
UNION ALL SELECT ‘Wednesday’, 4, 14
UNION ALL SELECT ‘Wednesday’, 4, 15
UNION ALL SELECT ‘Wednesday’, 4, 16
UNION ALL SELECT ‘Wednesday’, 4, 17
UNION ALL SELECT ‘Wednesday’, 4, 18
UNION ALL SELECT ‘Wednesday’, 4, 19
UNION ALL SELECT ‘Wednesday’, 4, 20
UNION ALL SELECT ‘Wednesday’, 4, 21
UNION ALL SELECT ‘Wednesday’, 4, 22
UNION ALL SELECT ‘Wednesday’, 4, 23
)
UNION ALL
(
SELECT ‘Thursday’ AS day_name, 2 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Thursday’, 5, 1
UNION ALL SELECT ‘Thursday’, 5, 2
UNION ALL SELECT ‘Thursday’, 5, 3
UNION ALL SELECT ‘Thursday’, 5, 4
UNION ALL SELECT ‘Thursday’, 5, 5
UNION ALL SELECT ‘Thursday’, 5, 6
UNION ALL SELECT ‘Thursday’, 5, 7
UNION ALL SELECT ‘Thursday’, 5, 8
UNION ALL SELECT ‘Thursday’, 5, 9
UNION ALL SELECT ‘Thursday’, 5, 10
UNION ALL SELECT ‘Thursday’, 5, 11
UNION ALL SELECT ‘Thursday’, 5, 12
UNION ALL SELECT ‘Thursday’, 5, 13
UNION ALL SELECT ‘Thursday’, 5, 14
UNION ALL SELECT ‘Thursday’, 5, 15
UNION ALL SELECT ‘Thursday’, 5, 16
UNION ALL SELECT ‘Thursday’, 5, 17
UNION ALL SELECT ‘Thursday’, 5, 18
UNION ALL SELECT ‘Thursday’, 5, 19
UNION ALL SELECT ‘Thursday’, 5, 20
UNION ALL SELECT ‘Thursday’, 5, 21
UNION ALL SELECT ‘Thursday’, 5, 22
UNION ALL SELECT ‘Thursday’, 5, 23
)
UNION ALL
(
SELECT ‘Friday’ AS day_name, 2 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Friday’, 6, 1
UNION ALL SELECT ‘Friday’, 6, 2
UNION ALL SELECT ‘Friday’, 6, 3
UNION ALL SELECT ‘Friday’, 6, 4
UNION ALL SELECT ‘Friday’, 6, 5
UNION ALL SELECT ‘Friday’, 6, 6
UNION ALL SELECT ‘Friday’, 6, 7
UNION ALL SELECT ‘Friday’, 6, 8
UNION ALL SELECT ‘Friday’, 6, 9
UNION ALL SELECT ‘Friday’, 6, 10
UNION ALL SELECT ‘Friday’, 6, 11
UNION ALL SELECT ‘Friday’, 6, 12
UNION ALL SELECT ‘Friday’, 6, 13
UNION ALL SELECT ‘Friday’, 6, 14
UNION ALL SELECT ‘Friday’, 6, 15
UNION ALL SELECT ‘Friday’, 6, 16
UNION ALL SELECT ‘Friday’, 6, 17
UNION ALL SELECT ‘Friday’, 6, 18
UNION ALL SELECT ‘Friday’, 6, 19
UNION ALL SELECT ‘Friday’, 6, 20
UNION ALL SELECT ‘Friday’, 6, 21
UNION ALL SELECT ‘Friday’, 6, 22
UNION ALL SELECT ‘Friday’, 6, 23
)
UNION ALL
(
SELECT ‘Saturday’ AS day_name, 2 AS day_of_week, 0 AS hour
UNION ALL SELECT ‘Saturday’, 7, 1
UNION ALL SELECT ‘Saturday’, 7, 2
UNION ALL SELECT ‘Saturday’, 7, 3
UNION ALL SELECT ‘Saturday’, 7, 4
UNION ALL SELECT ‘Saturday’, 7, 5
UNION ALL SELECT ‘Saturday’, 7, 6
UNION ALL SELECT ‘Saturday’, 7, 7
UNION ALL SELECT ‘Saturday’, 7, 8
UNION ALL SELECT ‘Saturday’, 7, 9
UNION ALL SELECT ‘Saturday’, 7, 10
UNION ALL SELECT ‘Saturday’, 7, 11
UNION ALL SELECT ‘Saturday’, 7, 12
UNION ALL SELECT ‘Saturday’, 7, 13
UNION ALL SELECT ‘Saturday’, 7, 14
UNION ALL SELECT ‘Saturday’, 7, 15
UNION ALL SELECT ‘Saturday’, 7, 16
UNION ALL SELECT ‘Saturday’, 7, 17
UNION ALL SELECT ‘Saturday’, 7, 18
UNION ALL SELECT ‘Saturday’, 7, 19
UNION ALL SELECT ‘Saturday’, 7, 20
UNION ALL SELECT ‘Saturday’, 7, 21
UNION ALL SELECT ‘Saturday’, 7, 22
UNION ALL SELECT ‘Saturday’, 7, 23
)