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Q&A for anime and manga fans

DECLARE @StartDate DATE = '2009-01-01';
DECLARE @EndDate DATE = '2023-12-31';

WITH TaggedQuestions AS (
  SELECT
    Id,
    CreationDate,
    CASE WHEN CHARINDEX('<thymeleaf>', Tags) > 0 THEN 1 ELSE 0 END AS ThymeleafTag,
    CASE WHEN CHARINDEX('<jsf>', Tags) > 0 THEN 1 ELSE 0 END AS JSFTag,
    CASE WHEN CHARINDEX('<vaadin>', Tags) > 0 THEN 1 ELSE 0 END AS VaadinTag
  FROM PostsWithDeleted
  WHERE
    PostTypeId = 1 AND 
    CreationDate >= @StartDate AND
    CreationDate <= @EndDate
),
MonthlyCounts AS (
  SELECT
    DATEADD(month, DATEDIFF(month, 0, CreationDate), 0) AS Month,
    SUM(ThymeleafTag) AS Thymeleaf,
    SUM(JSFTag) AS JSF,
    SUM(VaadinTag) AS Vaadin
  FROM TaggedQuestions
  GROUP BY DATEADD(month, DATEDIFF(month, 0, CreationDate), 0)
)
SELECT
  Month,
  Thymeleaf,
  JSF,
  Vaadin
FROM MonthlyCounts
ORDER BY Month;

view current version

edited mar 2

created mar 2 Karsten.Silz