分页存储过程(转)

http://www.594jsh.cn/Look.asp?id=75

  • 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
  • posted @ 2007-11-29 15:29  jambol  阅读(212)  评论(0编辑  收藏  举报