Q&A for professional and enthusiast programmers
/* SELECT P.Id, P.ParentId, P.CreationDate, P.ViewCount, P.Title, P.Body, P.Tags FROM Posts as P WHERE LOWER(P.Tags) LIKE '%<java>%' AND P.CreationDate BETWEEN '2018-12-01' AND '2020-09-30' -- AND P.ParentId IS NOT NULL ORDER BY P.ViewCount DESC; */ /* SELECT COUNT(Id) FROM Posts WHERE -- LOWER(P.Tags) LIKE '<javascript>' -- AND P.CreationDate BETWEEN '2018-12-01' AND '2020-09-30' -- AND P.ParentId IS NULL PostTypeId = 1 -- Tags = 'java' */ SELECT COUNT(p.Id) FROM Posts p JOIN PostTags pt on pt.PostId = p.Id JOIN Tags t on t.Id = pt.TagId WHERE TagId in ( SELECT id from Tags where tagname LIKE 'https' or tagname LIKE 'authentication' ) AND p.PostTypeId = 1