sql_page.txt

MS SQL Server的两个分页存储过程

USE Test
--EXEC GetRecordFromPage 'SQL0','Id',100,1,0,1,'Name LIKE ''%'''  
--效率高
GO

--效率高
CREATE PROCEDURE GetRecordFromPage
    @tblName      varchar(255),       -- 表名
    @fldName      varchar(255),       -- 字段名
    @PageSize     int = 10,           -- 页尺寸
    @PageIndex    int = 1,            -- 页码
    @IsCount      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(1000) = ''  -- 查询条件 (注意: 不要加 where)
AS

declare @strSQL   varchar(6000)       -- 主语句
declare @strTmp   varchar(100)        -- 临时变量
declare @strOrder varchar(400)        -- 排序类型

if @OrderType != 0
begin
    set @strTmp = "<(select min"
    set @strOrder = " order by [" + @fldName +"] desc"
end
else
begin
    set @strTmp = ">(select max"
    set @strOrder = " order by [" + @fldName +"] asc"
end

set @strSQL = "select top " + str(@PageSize) + " * 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) + " * from ["
        + @tblName + "] where [" + @fldName + "]" + @strTmp + "(["
        + @fldName + "]) from (select top " + str((@PageIndex-1)*@PageSize) + " ["
        + @fldName + "] from [" + @tblName + "] where " + @strWhere + " "
        + @strOrder + ") as tblTmp) and " + @strWhere + " " + @strOrder

if @PageIndex = 1
begin
    set @strTmp = ""
    if @strWhere != ''
        set @strTmp = " where " + @strWhere

    set @strSQL = "select top " + str(@PageSize) + " * from ["
        + @tblName + "]" + @strTmp + " " + @strOrder
end

if @IsCount != 0
    set @strSQL = "select count(*) as Total from [" + @tblName + "] WHERE " + @strWhere

exec (@strSQL)
GO





/*
USE Test
EXEC spAll_ReturnRows 'SELECT * FROM SQL0',100,1,'Id','Id DESC'	 
--效率低
**GO
*/

--效率低
CREATE PROCEDURE dbo.spAll_ReturnRows
(
 @SQL nVARCHAR(4000),	--SQL语句
 @Page int,		--每页的大小
 @RecsPerPage int,	--当前页码
 @ID VARCHAR(255),	--索引字段
 @Sort VARCHAR(255)	--排序字段，可带排序方式，如"ID DESC"
)
AS

DECLARE @Str nVARCHAR(4000)

SET @Str='SELECT   TOP '+CAST(@RecsPerPage AS VARCHAR(20))+' * FROM ('+@SQL+') T WHERE T.'+@ID+' NOT IN 
(SELECT   TOP '+CAST((@RecsPerPage*(@Page-1)) AS VARCHAR(20))+' '+@ID+' FROM ('+@SQL+') T9 ORDER BY '+@Sort+') ORDER BY '+@Sort

--PRINT @Str

EXEC sp_ExecuteSql @Str
GO