基於ID的SQL偏移量

Question

嘗試根據用戶標識查找3行。

87. John Snow 1000p 
88. YOU 990p 
89. Jane Doe 900p 

我已經存儲在@currentUser用戶變量和使用下面的查詢，該查詢獲取所有有關的行動：

結果應與當前用戶和行之前和之後所抵消

SELECT u.UserID, 
     u.ContentID, 
     (u.FirstName + ' ' + u.LastName) AS theUser, 
     SUM(l.Action) as thePoints 
FROM [AccessLog] l 
     LEFT JOIN [User] u 
      ON l.UserID = u.UserID 
WHERE l.Action = 13 
     OR l.Action = 2 
     AND l.Timestamp BETWEEN CONVERT(datetime, '2014-09-01') AND CONVERT(datetime, '2014-09-11') 
GROUP BY u.UserID, 
     u.ContentID, 
     u.FirstName, 
     u.LastName 
ORDER BY thePoints DESC 

我將如何去列出例如。 ＃87到＃89如果我的地方是＃88？

Answer 1

你應該看看OFFSET和FETCH FIRST，但我相信它取決於你使用的數據庫版本。

SELECT u.UserID, 
     u.ContentID, 
     (u.FirstName + ' ' + u.LastName) AS theUser, 
     SUM(l.Action) as thePoints 
FROM [AccessLog] l 
     LEFT JOIN [User] u 
      ON l.UserID = u.UserID 
WHERE l.Action = 13 
     OR l.Action = 2 
     AND l.Timestamp BETWEEN CONVERT(datetime, '2014-09-01') AND CONVERT(datetime, '2014-09-11') 
GROUP BY u.UserID, 
     u.ContentID, 
     u.FirstName, 
     u.LastName 
ORDER BY thePoints DESC 
offset 87 rows 
fetch first 3 rows only