instruction: How to search linked question with specific tag?. https://meta.stackoverflow.com/questions/371789/how-to-search-linked-question-with-specific-tag
response: SELECT CONCAT('site://q/', q.Id, '|', q.Title) AS "linked_post" FROM PostLinks AS pl INNER JOIN Posts AS q ON q.Id = pl.PostId INNER JOIN PostTags AS pt ON pt.PostId = q.Id INNER JOIN Tags AS t ON t.Id = pt.TagId WHERE RelatedPostId = '##postid:int?588004##' AND t.TagName = '##tagname:string?php##' AND LinkTypeId = 1