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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('<neo4j>', Tags) > 0 THEN 1 ELSE 0 END AS Neo4jTag,
    CASE WHEN CHARINDEX('<cassandra>', Tags) > 0 THEN 1 ELSE 0 END AS CassandraTag,
    CASE WHEN CHARINDEX('<couchbase>', Tags) > 0 THEN 1 ELSE 0 END AS CouchbaseTag
  FROM PostsWithDeleted
  WHERE
    PostTypeId = 1 AND 
    CreationDate >= @StartDate AND
    CreationDate <= @EndDate
),
MonthlyCounts AS (
  SELECT
    DATEADD(month, DATEDIFF(month, 0, CreationDate), 0) AS Month,
    SUM(Neo4jTag) AS Neo4j,
    SUM(CassandraTag) AS Cassandra,
    SUM(CouchbaseTag) AS Couchbase
  FROM TaggedQuestions
  GROUP BY DATEADD(month, DATEDIFF(month, 0, CreationDate), 0)
)
SELECT
  Month,
  Neo4j,
  Cassandra,
  Couchbase
FROM MonthlyCounts
ORDER BY Month;

view current version

edited mar 2

created mar 2 Karsten.Silz