sqlserver 支持定位当前页,自定义排序的分页SQL(拒绝动态SQL)

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1,场景:根据学生编号查询,返回该学生所在班级的所有学生。支持分页自定义排序及结果集自动定位到查询条件的学生编号所在页。
<div class="codetitle"><a style="CURSOR: pointer" data="47709" class="copybut" id="copybut47709" onclick="doCopy('code47709')"> 代码如下:

<div class="codebody" id="code47709">
CREATE PROC [dbo].[Sp_testpagerandsorting] (@GroupID INT,
@CurrentId INT,
@TimeFrom DATETIME,
@TimeTo DATETIME,
@OrderBy CHAR(50),
@PageSize INT,
@CurrentPage INT)
AS
SET nocount ON
BEGIN
DECLARE @StartNumber INT,
@EndNumber INT,
@CurrentIdRowNumber INT,
@RecordCount INT,
@EndPageIndex INT
DECLARE @RowNumberTable TABLE (
rownumber INT IDENTITY (1,1),
id INT )
--step 1: Build sort id list -------------------------------------------------------
INSERT INTO @RowNumberTable
(id)
SELECT sm.id AS id
FROM dbo.test sm WITH (nolock)
WHERE indate BETWEEN Coalesce(@TimeFrom,indate) AND
Coalesce(@TimeTo,indate)
AND sm.groupid = @GroupID
ORDER BY CASE
WHEN @OrderBy = 'InDate desc' THEN ( Row_number() OVER (ORDER BY indate DESC))
WHEN @OrderBy = 'InDate asc' THEN (Row_number() OVER (ORDER BY indate ASC))
WHEN @OrderBy = 'Id asc' THEN (Row_number() OVER (ORDER BY sm.id ASC))
WHEN @OrderBy = 'Id desc' THEN (Row_number() OVER (ORDER BY sm.id DESC))
WHEN @OrderBy = 'Name asc' THEN (Row_number() OVER (ORDER BY sm.name ASC))
WHEN @OrderBy = 'Name desc' THEN (Row_number() OVER (ORDER BY sm.name DESC) )
END
--step 2: Reset page index with current id -----------------------------------------
IF @CurrentIdNumber > 0
BEGIN
SELECT TOP 1 @CurrentIdRowNumber = rownumber
FROM @RowNumberTable
WHERE id = @CurrentIdNumber
IF @CurrentIdRowNumber > 0
BEGIN
IF @CurrentPage = 0
BEGIN
SET @CurrentPage = Ceiling(CAST(@CurrentIdRowNumber AS DECIMAL) / CAST (@PageSize AS DECIMAL))
END
END
END
ELSE
BEGIN
IF @CurrentPage = 0
BEGIN
SET @CurrentPage = 1
END
END
--step 3: Set recordCount -----------------------------------------
SELECT @RecordCount = COUNT(1)
FROM @RowNumberTable
--step 4: Calc startNumber & endNumber -----------------------------------------
SELECT @StartNumber = @PageSize ( @CurrentPage - 1 ),
@EndNumber = @PageSize
( @CurrentPage - 1 ) + @pageSize,
@EndPageIndex = Ceiling(CAST(@RecordCount AS DECIMAL) / CAST(@PageSize AS DECIMAL))
IF @CurrentPage = @EndPageIndex
BEGIN
SET @EndNumber = @RecordCount
END
--step 5: Get sorted id of current page -----------------------------------------
;WITH a
AS (SELECT TOP (@EndNumber - @StartNumber) id,
rownumber
FROM (SELECT TOP (@EndNumber) id,
rownumber
FROM @RowNumberTable) AS b
ORDER BY rownumber DESC)
--step 6: Return current page idList -------------------------------------------------------
SELECT [ID],
[GroupID] [Name],
[Address]
FROM dbo.test sm WITH(nolock)
INNER JOIN a
ON a.id = sm.id
ORDER BY a.rownumber
-- step 7:return current page & record count ----------------------------------
SELECT @CurrentPage AS currentpage,
@RecordCount AS recordcount
END

2,简单条件的,动态where语句(关于Like查询的动态where,建议使用笨办法做)
<div class="codetitle"><a style="CURSOR: pointer" data="39423" class="copybut" id="copybut39423" onclick="doCopy('code39423')"> 代码如下:
<div class="codebody" id="code39423">
CREATE PROC [dbo].[Getstudentlistbycondition] @Name NVARCHAR(20),
@Class INT
AS
SET nocount ON
BEGIN
BEGIN
SELECT [Name],
[class]
FROM [testtable]
WHERE [Class] = CASE
WHEN @Class > 0 THEN @Class ELSE [Class] END
AND [name] = CASE
WHEN @Name <> '' THEN @Name ELSE [Name] END
END
END

原文链接:https://www.f2er.com/mssql/64151.html

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