分页存储过程

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Create PROC P_viewPage_A
/*
nzperfect [no_mIss] 高效通用分页存储过程(双向检索) 2007.5.7  QQ:34813284
敬告：适用于单一主键或存在唯一值列的表或视图
ps:Sql语句为8000字节,调用时请注意传入参数及sql总长度不要超过指定范围
*/
@TableName VARCHAR(200),     --表名
@FieldList VARCHAR(2000),    --显示列名，如果是全部字段则为*
@PrimaryKey VARCHAR(100),    --单一主键或唯一值键
@Where VARCHAR(2000),        --查询条件 不含where字符，如id>10 and len(userid)>9
@Order VARCHAR(1000),        --排序 不含order by字符，如id asc,userid desc，必须指定asc或desc
--注意当@SortType=3时生效，记住一定要在最后加上主键，否则会让你比较郁闷
@SortType INT,               --排序规则 1:正序asc 2:倒序desc 3:多列排序方法
@RecorderCount INT,          --记录总数 0:会返回总记录
@PageSize INT,               --每页输出的记录数
@PageIndex INT,              --当前页数
@TotalCount INT OUTPUT,      --记返回总记录
@TotalPageCount INT OUTPUT   --返回总页数
AS
SET NOCOUNT ON
IF ISNULL(@TotalCount,) = SET @TotalCount = 0
SET @Order = RTRIM(LTRIM(@Order))
SET @PrimaryKey = RTRIM(LTRIM(@PrimaryKey))
SET @FieldList = REPLACE(RTRIM(LTRIM(@FieldList)), ,)
WHILE CHARINDEX(, ,@Order) > 0 OR CHARINDEX( ,,@Order) > 0
BEGIN
SET @Order = REPLACE(@Order,, ,,)
SET @Order = REPLACE(@Order, ,,,)
END
IF ISNULL(@TableName,) = OR ISNULL(@FieldList,) =
OR ISNULL(@PrimaryKey,) =
OR @SortType < 1 OR @SortType >3
OR @RecorderCount  < 0 OR @PageSize < 0 OR @PageIndex < 0
BEGIN
PRINT(ERR_00)
RETURN
END
IF @SortType = 3
BEGIN
IF (UPPER(RIGHT(@Order,4))!= ASC AND UPPER(RIGHT(@Order,5))!= DESC)
BEGIN PRINT(ERR_02) RETURN END
END
DECLARE @new_where1 VARCHAR(1000)
DECLARE @new_where2 VARCHAR(1000)
DECLARE @new_order1 VARCHAR(1000)
DECLARE @new_order2 VARCHAR(1000)
DECLARE @new_order3 VARCHAR(1000)
DECLARE @Sql VARCHAR(8000)
DECLARE @SqlCount NVARCHAR(4000)
IF ISNULL(@where,) =
BEGIN
SET @new_where1 =
SET @new_where2 = WHERE 
END
ELSE
BEGIN
SET @new_where1 = WHERE + @where
SET @new_where2 = WHERE + @where + AND
END
IF ISNULL(@order,) = OR @SortType = 1  OR @SortType = 2
BEGIN
IF @SortType = 1
BEGIN
SET @new_order1 = ORDER BY + @PrimaryKey + ASC
SET @new_order2 = ORDER BY + @PrimaryKey + DESC
END
IF @SortType = 2
BEGIN
SET @new_order1 = ORDER BY + @PrimaryKey + DESC
SET @new_order2 = ORDER BY + @PrimaryKey + ASC
END
END
ELSE
BEGIN
SET @new_order1 = ORDER BY + @Order
END
IF @SortType = 3 AND  CHARINDEX(,+@PrimaryKey+ ,,+@Order)>0
BEGIN
SET @new_order1 = ORDER BY + @Order
SET @new_order2 = @Order + ,
SET @new_order2 = REPLACE(REPLACE(@new_order2,ASC,,{ASC},),DESC,,{DESC},)
SET @new_order2 = REPLACE(REPLACE(@new_order2,{ASC},,DESC,),{DESC},,ASC,)
SET @new_order2 = ORDER BY + SUBSTRING(@new_order2,1,LEN(@new_order2)-1)
IF @FieldList <> *
BEGIN
SET @new_order3 = REPLACE(REPLACE(@Order + ,,ASC,,,),DESC,,,)
SET @FieldList = , + @FieldList
WHILE CHARINDEX(,,@new_order3)>0
BEGIN
IF CHARINDEX(SUBSTRING(,+@new_order3,1,CHARINDEX(,,@new_order3)),,+@FieldList+,)>0
BEGIN
SET @FieldList =
@FieldList + , + SUBSTRING(@new_order3,1,CHARINDEX(,,@new_order3))
END
SET @new_order3 =
SUBSTRING(@new_order3,CHARINDEX(,,@new_order3)+1,LEN(@new_order3))
END
SET @FieldList = SUBSTRING(@FieldList,2,LEN(@FieldList))
END
END
SET @SqlCount = SELECT @TotalCount=COUNT(*),@TotalPageCount=CEILING((COUNT(*)+0.0)/
+ CAST(@PageSize AS VARCHAR)+) FROM + @TableName + @new_where1
IF @RecorderCount  = 0
BEGIN
EXEC SP_EXECUTESQL @SqlCount,N@TotalCount INT OUTPUT,@TotalPageCount INT OUTPUT,
@TotalCount OUTPUT,@TotalPageCount OUTPUT
END
ELSE
BEGIN
SELECT @TotalCount = @RecorderCount
END
IF @PageIndex > CEILING((@TotalCount+0.0)/@PageSize)
BEGIN
SET @PageIndex =  CEILING((@TotalCount+0.0)/@PageSize)
END
IF @PageIndex = 1 OR @PageIndex >= CEILING((@TotalCount+0.0)/@PageSize)
BEGIN
IF @PageIndex = 1 --返回第一页数据
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM
+ @TableName + @new_where1 + @new_order1
END
IF @PageIndex >= CEILING((@TotalCount+0.0)/@PageSize)  --返回最后一页数据
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(ABS(@PageSize*@PageIndex-@TotalCount-@PageSize))
+ + @FieldList + FROM
+ @TableName + @new_where1 + @new_order2 + ) AS TMP
+ @new_order1
END
END
ELSE
BEGIN
IF @SortType = 1  --仅主键正序排序
BEGIN
IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2  --正向检索
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM
+ @TableName + @new_where2 + @PrimaryKey + >
+ (SELECT MAX( + @PrimaryKey + ) FROM (SELECT TOP
+ STR(@PageSize*(@PageIndex-1)) + + @PrimaryKey
+ FROM + @TableName
+ @new_where1 + @new_order1 + ) AS TMP) + @new_order1
END
ELSE  --反向检索
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(@PageSize) +
+ @FieldList + FROM
+ @TableName + @new_where2 + @PrimaryKey + <
+ (SELECT MIN( + @PrimaryKey + ) FROM (SELECT TOP
+ STR(@TotalCount-@PageSize*@PageIndex) + + @PrimaryKey
+ FROM + @TableName
+ @new_where1 + @new_order2 + ) AS TMP) + @new_order2
+ ) AS TMP + @new_order1
END
END
IF @SortType = 2  --仅主键反序排序
BEGIN
IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2  --正向检索
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM
+ @TableName + @new_where2 + @PrimaryKey + <
+ (SELECT MIN( + @PrimaryKey + ) FROM (SELECT TOP
+ STR(@PageSize*(@PageIndex-1)) + + @PrimaryKey
+ FROM + @TableName
+ @new_where1 + @new_order1 + ) AS TMP) + @new_order1
END
ELSE  --反向检索
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(@PageSize) +
+ @FieldList + FROM
+ @TableName + @new_where2 + @PrimaryKey + >
+ (SELECT MAX( + @PrimaryKey + ) FROM (SELECT TOP
+ STR(@TotalCount-@PageSize*@PageIndex) + + @PrimaryKey
+ FROM + @TableName
+ @new_where1 + @new_order2 + ) AS TMP) + @new_order2
+ ) AS TMP + @new_order1
END
END
IF @SortType = 3  --多列排序，必须包含主键，且放置最后，否则不处理
BEGIN
IF CHARINDEX(, + @PrimaryKey + ,, + @Order) = 0
BEGIN PRINT(ERR_02) RETURN END
IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2  --正向检索
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(@PageSize*@PageIndex) + + @FieldList
+ FROM + @TableName + @new_where1 + @new_order1 + ) AS TMP
+ @new_order2 + ) AS TMP + @new_order1
END
ELSE  --反向检索
BEGIN
SET @Sql = SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(@PageSize) + + @FieldList + FROM (
+ SELECT TOP + STR(@TotalCount-@PageSize *@PageIndex+@PageSize) + + @FieldList
+ FROM + @TableName + @new_where1 + @new_order2 + ) AS TMP
+ @new_order1 + ) AS TMP + @new_order1
END
END
END
EXEC(@Sql)
GO