Question

我有以下存储过程，它从SQL Server数据库中为所选照片选择注释。我正在使用OFFSET和FETCH来加载帖子（10）的数量，然后有一个按钮，可以使用AJAX将更多帖子添加到DIV。

CREATE PROCEDURE [dbo].[SD_PhotoCmt]
    @IDphoto int,
    @IDuserInput nvarchar(150),
    @offset int,
    @fetch int = 10
AS
   SET NOCOUNT ON;

   SELECT 
       photoCmt.IDphotoCmt,
       photoCmt.photoCmt, 
       photoCmt.IDuser,
       photoCmt.photoCmtDate, //the date and time when the comment was added
       photoCmt.IDphoto,
   FROM 
       photoCmt 
   WHERE 
       photoCmt.IDphoto = @IDphoto 
   ORDER BY 
       photoCmt.photoCmtDate DESC 
   OFFSET @offset ROWS 
   FETCH NEXT @fetch ROWS ONLY

假设所选照片有12条评论，我希望评论在页面上显示如下（首次加载时）：

所需订单

[Button PREPEND More]
Comment3
Comment4
Comment5
Comment6
Comment7
Comment8
Comment9
Comment10
Comment11
Comment12

不幸的是，存储过程对请求的反馈如下：

不受欢迎的订单

[Button PREPEND More]
Comment12
Comment11
Comment10
Comment9
Comment8
Comment7
Comment6
Comment5
Comment4
Comment3

如何获得我想要的订单？我尝试了很多组合，但我做不到。我无法将TOP与OFFSET和FETCH一起使用。

Answer 1

首先进行OFFSET / FETCH，然后命令RESULT，如：

select * from
(SELECT 
 photoCmt.IDphotoCmt,
 photoCmt.photoCmt, 
 photoCmt.IDuser,
 photoCmt.photoCmtDate, //the date and time when the comment was added
 photoCmt.IDphoto,
 FROM photoCmt
 WHERE photoCmt.IDphoto = @IDphoto 
 ORDER BY photoCmt.photoCmtDate DESC
 OFFSET @offset ROWS FETCH NEXT @fetch ROWS ONLY)
order by photoCmtDate ASC

Answer 2

试试这个，

基本上，使用降序将页面转换为子查询，然后在外部查询中重新排序页面。

我会告诫我的建议，使用不同的显示顺序来分页可能会让用户感到非常困惑。

Fiddle Here

CREATE PROCEDURE [dbo].[SD_PhotoCmt]
        @IDphoto int,
        @IDuserInput nvarchar(150),
        @offset int,
        @fetch int = 10
AS
    SET NOCOUNT ON;
    SELECT
                [O].[IDphotoCmt],
                [O].[photoCmt], 
                [O].[IDuser],
                [O].[photoCmtDate],
                [O].[IDphoto]
        FROM
                (SELECT 
                            [C].[IDphotoCmt],
                            [C].[photoCmt], 
                            [C].[IDuser],
                            [C].[photoCmtDate],
                            [C].[IDphoto]
                    FROM
                            [photoCmt] [C]
                    WHERE
                            [C].[IDphoto] = @IDphoto 
                    ORDER BY
                            [C].[photoCmtDate] DESC
                        OFFSET @offset ROWS
                        FETCH NEXT @fetch ROWS ONLY) [O]
        ORDER BY
                   [O].[photoCmt] ASC;

Answer 3

使用pagination执行row_number()并使用Order by注释列获取所需的订单。试试这个。

SELECT *
FROM   (SELECT Row_number()
                 OVER(
                   ORDER BY photoCmt.photoCmtDate DESC) rn,
               photoCmt.IDphotoCmt,
               photoCmt.photoCmt,
               photoCmt.IDuser,
               photoCmt.photoCmtDate,--the date and time WHEN the comment was added
               photoCmt.IDphoto,
        FROM   photoCmt
        WHERE  photoCmt.IDphoto = @IDphoto) a
WHERE  rn BETWEEN @offset AND @offset + @fetch
ORDER  BY CONVERT(INT, Substring(photoCmt, Charindex('[0-9]', photoCmt), Len(photoCmt))) ASC

Answer 4

使用任何表变量并将查询中的数据加载到表变量中，然后选择该表变量作为您的订单

在存储过程中使用带有OFFSET和FETCH的ORDER获得正确的顺序

4 个答案: