--------------------------------------------------------------- -- 分页存储过程支持多表查询,即支持使用视图 -- 获取表或表集合的分页数据 -- 当多表连接时,sort列必须指定表名 ---------------------------------------------------------------CREATE PROCEDURE UP_GetRecordByPage ( @Tables varchar(1000), @PK varchar(100), @Sort varchar(200) = NULL, @PageNumber int = 1, @PageSize int = 10, @Fields varchar(1000) = '*', @Filter varchar(1000) = NULL, @Group varchar(1000) = NULL, @RecordCount int = 0 output ) AS/**//*Default Sorting*/ IF @Sort IS NULL OR @Sort = '' SET @Sort = @PK /**//*Find the @PK type*/ DECLARE @SortTable varchar(100) DECLARE @SortName varchar(100) DECLARE @strSortColumn varchar(200) DECLARE @operator char(2) DECLARE @type varchar(100) DECLARE @prec int/**//*Set sorting variables.*/ IF CHARINDEX('DESC',@Sort)>0 BEGIN SET @strSortColumn = REPLACE(@Sort, 'DESC', '') SET @operator = '<' END ELSE BEGIN IF CHARINDEX('ASC', @Sort) > 0 SET @strSortColumn = REPLACE(@Sort, 'ASC', '') ELSE SET @strSortColumn = @Sort SET @operator = '>' END IF CHARINDEX('.', @strSortColumn) > 0 BEGIN SET @SortTable = SUBSTRING(@strSortColumn, 0, CHARINDEX('.',@strSortColumn)) SET @SortName = SUBSTRING(@strSortColumn, CHARINDEX('.',@strSortColumn) + 1, LEN(@strSortColumn)) END ELSE BEGIN SET @SortTable = @Tables SET @SortName = @strSortColumn ENDSELECT @type=t.name, @prec=c.prec FROM sysobjects o JOIN syscolumns c on o.id=c.id JOIN systypes t on c.xusertype=t.xusertype WHERE o.name = @SortTable AND c.name = @SortNameIF CHARINDEX('char', @type) > 0 SET @type = @type + '(' + CAST(@prec AS varchar) + ')'DECLARE @strPageSize varchar(50) DECLARE @strStartRow varchar(50) DECLARE @strFilter varchar(1000) DECLARE @strSimpleFilter varchar(1000) DECLARE @strGroup varchar(1000)/**//*Default Page Number*/ IF @PageNumber < 1 SET @PageNumber = 1/**//*Set paging variables.*/ SET @strPageSize = CAST(@PageSize AS varchar(50)) SET @strStartRow = CAST(((@PageNumber - 1)*@PageSize + 1) AS varchar(50))/**//*Set filter & group variables.*/ IF @Filter IS NOT NULL AND @Filter != '' BEGIN SET @strFilter = ' WHERE ' + @Filter + ' ' SET @strSimpleFilter = ' AND ' + @Filter + ' ' END ELSE BEGIN SET @strSimpleFilter = '' SET @strFilter = '' END IF @Group IS NOT NULL AND @Group != '' SET @strGroup = ' GROUP BY ' + @Group + ' ' ELSE SET @strGroup = ''/**//*Get rows count.*/ DECLARE @str_Count_SQL nvarchar(500) SET @str_Count_SQL= 'SELECT @TotalCount=count(*) FROM ' + @Tables + @strFilter EXEC sp_executesql @str_Count_SQL,N'@TotalCount int=0 output',@RecordCount output
/**//*Execute dynamic query*/ IF @Sort = @PK BEGIN EXEC( ' DECLARE @SortColumn ' + @type + ' SET ROWCOUNT ' + @strStartRow + ' SELECT @SortColumn=' + @strSortColumn + ' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + ' SET ROWCOUNT ' + @strPageSize + ' SELECT ' + @Fields + ' FROM ' + @Tables + ' WHERE ' + @strSortColumn + @operator + '= @SortColumn ' + @strSimpleFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + ' ' ) END ELSE BEGIN EXEC( ' DECLARE @SortColumn ' + @type + ' DECLARE @SortNullValue ' + @type + ' DECLARE @PKStartValue int SET @SortNullValue=CAST('''' as '+ @type +') SET ROWCOUNT ' + @strStartRow + ' SELECT @SortColumn= isNull(' + @strSortColumn + ',@SortNullValue), @PKStartValue = '+ @PK +' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + ','+ @PK +' Desc SET ROWCOUNT ' + @strPageSize + ' SELECT ' + @Fields + ' FROM ' + @Tables + ' WHERE (isNull(' + @strSortColumn+',@SortNullValue)' + @operator + ' @SortColumn or (isNull(' + @strSortColumn+',@SortNullValue)=@SortColumn and '+ @PK +'<=@PKStartValue))' + @strSimpleFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + ','+ @PK +' Desc ' ) END GO
cast
进行类型转换
-- 分页存储过程支持多表查询,即支持使用视图
-- 获取表或表集合的分页数据
-- 当多表连接时,sort列必须指定表名
---------------------------------------------------------------CREATE PROCEDURE UP_GetRecordByPage
(
@Tables varchar(1000),
@PK varchar(100),
@Sort varchar(200) = NULL,
@PageNumber int = 1,
@PageSize int = 10,
@Fields varchar(1000) = '*',
@Filter varchar(1000) = NULL,
@Group varchar(1000) = NULL,
@RecordCount int = 0 output
)
AS/**//*Default Sorting*/
IF @Sort IS NULL OR @Sort = ''
SET @Sort = @PK /**//*Find the @PK type*/
DECLARE @SortTable varchar(100)
DECLARE @SortName varchar(100)
DECLARE @strSortColumn varchar(200)
DECLARE @operator char(2)
DECLARE @type varchar(100)
DECLARE @prec int/**//*Set sorting variables.*/
IF CHARINDEX('DESC',@Sort)>0
BEGIN
SET @strSortColumn = REPLACE(@Sort, 'DESC', '')
SET @operator = '<'
END
ELSE
BEGIN
IF CHARINDEX('ASC', @Sort) > 0
SET @strSortColumn = REPLACE(@Sort, 'ASC', '')
ELSE
SET @strSortColumn = @Sort SET @operator = '>'
END
IF CHARINDEX('.', @strSortColumn) > 0
BEGIN
SET @SortTable = SUBSTRING(@strSortColumn, 0, CHARINDEX('.',@strSortColumn))
SET @SortName = SUBSTRING(@strSortColumn, CHARINDEX('.',@strSortColumn) + 1, LEN(@strSortColumn))
END
ELSE
BEGIN
SET @SortTable = @Tables
SET @SortName = @strSortColumn
ENDSELECT @type=t.name, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
WHERE o.name = @SortTable AND c.name = @SortNameIF CHARINDEX('char', @type) > 0
SET @type = @type + '(' + CAST(@prec AS varchar) + ')'DECLARE @strPageSize varchar(50)
DECLARE @strStartRow varchar(50)
DECLARE @strFilter varchar(1000)
DECLARE @strSimpleFilter varchar(1000)
DECLARE @strGroup varchar(1000)/**//*Default Page Number*/
IF @PageNumber < 1
SET @PageNumber = 1/**//*Set paging variables.*/
SET @strPageSize = CAST(@PageSize AS varchar(50))
SET @strStartRow = CAST(((@PageNumber - 1)*@PageSize + 1) AS varchar(50))/**//*Set filter & group variables.*/
IF @Filter IS NOT NULL AND @Filter != ''
BEGIN
SET @strFilter = ' WHERE ' + @Filter + ' '
SET @strSimpleFilter = ' AND ' + @Filter + ' '
END
ELSE
BEGIN
SET @strSimpleFilter = ''
SET @strFilter = ''
END
IF @Group IS NOT NULL AND @Group != ''
SET @strGroup = ' GROUP BY ' + @Group + ' '
ELSE
SET @strGroup = ''/**//*Get rows count.*/
DECLARE @str_Count_SQL nvarchar(500)
SET @str_Count_SQL= 'SELECT @TotalCount=count(*) FROM ' + @Tables + @strFilter
EXEC sp_executesql @str_Count_SQL,N'@TotalCount int=0 output',@RecordCount output
/**//*Execute dynamic query*/
IF @Sort = @PK
BEGIN
EXEC(
'
DECLARE @SortColumn ' + @type + '
SET ROWCOUNT ' + @strStartRow + '
SELECT @SortColumn=' + @strSortColumn + ' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '
SET ROWCOUNT ' + @strPageSize + '
SELECT ' + @Fields + ' FROM ' + @Tables + ' WHERE ' + @strSortColumn + @operator + '= @SortColumn ' + @strSimpleFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '
'
)
END
ELSE
BEGIN
EXEC(
'
DECLARE @SortColumn ' + @type + '
DECLARE @SortNullValue ' + @type + '
DECLARE @PKStartValue int
SET @SortNullValue=CAST('''' as '+ @type +')
SET ROWCOUNT ' + @strStartRow + '
SELECT @SortColumn= isNull(' + @strSortColumn + ',@SortNullValue), @PKStartValue = '+ @PK +' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + ','+ @PK +' Desc
SET ROWCOUNT ' + @strPageSize + '
SELECT ' + @Fields + ' FROM ' + @Tables + ' WHERE (isNull(' + @strSortColumn+',@SortNullValue)' + @operator + ' @SortColumn or (isNull(' + @strSortColumn+',@SortNullValue)=@SortColumn and '+ @PK +'<=@PKStartValue))' + @strSimpleFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + ','+ @PK +' Desc
'
)
END
GO