使用SQL ORDER BY对给定元素进行排序

Question

鉴于:

  SELECT projectID, urlID, COUNT(1) AS totalClicks, projectPage,
         (SELECT COUNT(1)
           FROM   tblStatSessionRoutes, tblStatSessions
           WHERE  tblStatSessionRoutes.statSessionID = tblStatSessions.ID
           AND    tblStatSessions.projectID = tblAdClicks.projectID
           AND    (tblStatSessionRoutes.leftPageID = tblAdClicks.projectPage OR
                 tblStatSessionRoutes.rightPageID = tblAdClicks.projectPage)) AS totalViews
  FROM   tblAdClicks
  WHERE  projectID IN (SELECT projectID FROM tblProjects WHERE userID = 5)
  GROUP  BY projectID, urlID, projectPage

我需要对它们进行排序,以便ID = 111的所有项目在返回的数据集中都是最后的.

例如,它可能会返回:

Project ID
---------
100
100
100
156
156
143
122
111
111
111
190
154
87

但我需要所有的111出现在列表的END,不使用两个查询,一个选择111,另一个选择其余的不幸不幸,因为这是一个资源密集型查询.

Answer 1

ORDER BY
 CASE projectID WHEN 111 THEN 1 ELSE 0 END,
 projectID /* etc... */