存储过程分页（3）

CREATE PROC P_viewPage

/**//*
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
PRINT(@Sql)
EXEC(@Sql)
GO

CREATE PROC P_public_ViewPage
/**//*
no_mIss 通用分页存储过程 2007.3.1  QQ:34813284
适用于联合主键/单主键/存在能确定唯一行列/存在能确定唯一行的多列 (用英文,隔开)
调用：
第一页查询时返回总记录和总页数及第一页记录：
EXECUTE P_public_ViewPage_per 'TableName','col1,col2,col3,col4','pk1,pk2,pk3',
'col5>0 and col7<9','pk1 asc,pk2 asc,pk3 asc',0,10,1,
@TotalCount OUTPUT,@TotalPageCount OUTPUT
其它页调用，比如第89页(假设第一页查询时返回总记录为2000000)：
EXECUTE P_public_ViewPage_per 'TableName','col1,col2,col3,col4','pk1,pk2,pk3',
'col5>0 and col7<9','pk1 asc,pk2 asc,pk3 asc',2000000,10,89,
@TotalCount OUTPUT,@TotalPageCount OUTPUT
*/

@TableName VARCHAR(200),     --表名
@FieldList VARCHAR(2000),    --显示列名
@PrimaryKey VARCHAR(100),    --单一主键或唯一值键或联合主键列表(用英文,隔开)或能确定唯一行的多列列表(用英文,隔开)
@Where VARCHAR(1000),        --查询条件 不含'where'字符
@Order VARCHAR(1000),        --排序 不含'order by'字符,用英文,隔开
@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,      --返回记录总数
@TotalPageCount INT OUTPUT   --返回总页数
AS

SET NOCOUNT ON

SET @FieldList = REPLACE(@FieldList,' ','')
IF @FieldList = '*'
BEGIN SET @FieldList = 'A.*'END
ELSE
BEGIN
SET @FieldList = 'A.' + REPLACE(@FieldList,',',',A.')
END

WHILE CHARINDEX(', ',@Order)>0
BEGIN
SET @Order = REPLACE(@Order,', ',',')
END

IF ISNULL(@TableName,'') = '' OR ISNULL(@PrimaryKey,'') = ''
OR @RecorderCount < 0 OR @PageSize < 0 OR @PageIndex < 0
BEGIN
RETURN
END

DECLARE @new_where1 VARCHAR(1000)
DECLARE @new_where2 VARCHAR(1000)
DECLARE @new_where3 VARCHAR(1000)
DECLARE @new_where4 VARCHAR(1000)
DECLARE @new_order1 VARCHAR(1000)
DECLARE @new_order2 VARCHAR(1000)
DECLARE @Fields VARCHAR(1000)
DECLARE @Sql VARCHAR(8000)
DECLARE @SqlCount NVARCHAR(4000)

SET @Fields = @PrimaryKey + ','
SET @new_where2 = ''
SET @new_where4 = ''

IF ISNULL(@where,'') = ''
BEGIN
SET @new_where1 = ' '
SET @new_where3 = ' WHERE '
END
ELSE
BEGIN
SET @new_where1 = ' WHERE ' + @where + ' '
SET @new_where3 = ' WHERE 1=1 '
+ REPLACE(' AND ' + @where,' AND ',' AND A.')+ ' AND '
END

WHILE CHARINDEX(',',@Fields)>0
BEGIN
SET @new_where2 = @new_where2
+ 'A.' + LTRIM(LEFT(@Fields,CHARINDEX(',',@Fields)-1))
+ ' = B.' + LTRIM(LEFT(@Fields,CHARINDEX(',',@Fields)-1)) + ' AND '
SET @new_where4 = @new_where4
+ 'B.' + LTRIM(LEFT(@Fields,CHARINDEX(',',@Fields)-1)) + ' IS NULL AND '
SET @Fields = SUBSTRING(@Fields,CHARINDEX(',',@Fields)+1,LEN(@Fields))
END
SET @new_where2 = LEFT(@new_where2,LEN(@new_where2)-4)
SET @new_where4 = LEFT(@new_where4,LEN(@new_where4)-4)

IF ISNULL(@order,'') = ''
BEGIN
SET @new_order1 = ''
SET @new_order2 = ''
END
ELSE
BEGIN
SET @new_order1 = ' ORDER BY ' + @Order
SET @new_order2 = ' ORDER BY '
+ RIGHT(REPLACE(',' + @Order,',',', A.' ),
LEN(REPLACE(',' + @Order,',',', A.' ))-1)
END

SET @SqlCount = 'SELECT @TotalCount=COUNT(*),@TotalPageCount=CEILING((COUNT(*)+0.0)/'
+ CAST(@PageSize AS VARCHAR)+') FROM ' + @TableName
+ ' A ' +  @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
BEGIN
SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM '
+ @TableName + ' A'+ @new_where1 + @new_order1
END
ELSE
BEGIN
SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM '
+ @TableName + ' A LEFT JOIN (SELECT TOP '
+ STR(@PageSize*(@PageIndex-1))
+ ' ' + @PrimaryKey + ' FROM ' + @TableName + @new_where1
+ @new_order1 + ' )B ON ' + @new_where2 + @new_where3
+ @new_where4 + @new_order2
END

EXEC(@Sql)
GO