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不错的sql分页存储过程

2011-05-22 12:15 441 查看
create PROCEDURE Sp_Conn_Sort
(
@tblName   varchar(255),       -- 表名

@strGetFields varchar(1000) = '*',  -- 需要返回的列

@fldName varchar(255)='',      -- 排序的字段名

@PageSize   int = 40,          -- 页尺寸

@PageIndex  int = 1,           -- 页码

@doCount  bit = 0,   -- 返回记录总数, 非 0 值则返回

@OrderType bit = 0,  -- 设置排序类型, 非 0 值则降序
@strWhere  varchar(1500)=''  -- 查询条件 (注意: 不要加 where)
)
AS

declare @strSQL   varchar(5000)       -- 主语句

declare @strTmp   varchar(110)        -- 临时变量

declare @strOrder varchar(400)        -- 排序类型

if @doCount != 0

  begin

    if @strWhere !=''

    set @strSQL = 'select count(*) as Total from ' + @tblName + ' where '+@strWhere

    else

    set @strSQL = 'select count(*) as Total from ' + @tblName

end 

--以上代码的意思是如果@doCount传递过来的不是0,就执行总数统计。以下的所有代码都是@doCount为0的情况

else

begin

if @OrderType != 0

begin

    set @strTmp = '<(select min'

set @strOrder = ' order by ' + @fldName +' desc'

--如果@OrderType不是0,就执行降序,这句很重要!

end

else

begin

    set @strTmp = '>(select max'

    set @strOrder = ' order by ' + @fldName +' asc'

end

if @PageIndex = 1

begin

    if @strWhere != ''  

    set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from ' + @tblName + ' where ' + @strWhere + ' ' + @strOrder

     else

     set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from '+ @tblName + ' '+ @strOrder

--如果是第一页就执行以上代码,这样会加快执行速度

end

else

begin

--以下代码赋予了@strSQL以真正执行的SQL代码

set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from '

    + @tblName + ' where ' + @fldName + '' + @strTmp + '('+ @fldName + ') from (select top ' + str((@PageIndex-1)*@PageSize) + ' '+ @fldName + ' from ' + @tblName + '' + @strOrder + ') as tblTmp)'+ @strOrder

if @strWhere != ''

    set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from '

        + @tblName + ' where ' + @fldName + '' + @strTmp + '('

        + @fldName + ') from (select top ' + str((@PageIndex-1)*@PageSize) + ' '

        + @fldName + ' from ' + @tblName + ' where ' + @strWhere + ' '

        + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder

end

end  

exec (@strSQL)
-----------------

sql server 2000 单主键高效分页存储过程 (支持多字段排序)

Create PROC P_viewPage         
@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 (Select * FROM ' + @TableName + @new_where1+') AS T'
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 * FROM (Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM '
+ @TableName + @new_where1 + @new_order1 +') AS TMP ' + @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
PRINT(@SQL)          
EXEC(@Sql)
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