sql server2000分页方式很多,效率吗 当到达10万级以上就有些吃力了,这里暂时不例出来了
sql server2005以上就有了row_number 也是一大进步,详情如下参考
复制代码 代码如下:
Sql Server2005通用分页存储过程
CREATE PROCEDURE [dbo].[Common_GetPagedList]
(
@TableName nvarchar(100), --表名
@ColumnNames nvarchar(1000) = "*", --字段名集合(全部字段为*,其它逗号分隔)
@OrderClause nvarchar(1000), --排序从句(不包含order by)
@WhereClause nvarchar(1000) =N" 1=1 ", --条件从句(不包含where)
@PageSize int = 0, --每页记录数(0为所有)
@PageIndex int = 1, --页索引(从1开始)
@TotalRecord int output --返回总记录数
)
AS
BEGIN
if (@ColumnNames is null or @ColumnNames="") set @ColumnNames=" * "
if (@WhereClause is null or @WhereClause="") set @WhereClause=" 1=1 "
if (@OrderClause is null or @OrderClause="") set @OrderClause=" Id desc "
--处理开始点和结束点
Declare @StartRecord int;
Declare @EndRecord int;
Declare @TotalCountSql nvarchar(1200);
Declare @SqlString nvarchar(4000);
--统计记录
if(@TotalRecord is null OR @TotalRecord>=0)
begin
SET @TotalCountSql= N"select @TotalRecord = count(*) from " + @TableName +" where "+@WhereClause;
--select @TotalCountSql
EXEC sp_executesql @totalCountSql,N"@TotalRecord int out",@TotalRecord output;--返回总记录数
end
if @PageSize>0
begin
if @PageIndex<1 set @PageIndex=1
set @StartRecord = (@PageIndex-1)*@PageSize + 1
set @EndRecord = @StartRecord + @PageSize - 1
set @SqlString = N"select row_number() over (order by "+ @OrderClause +") as rowId,"+@ColumnNames+" from "+ @TableName+" where "+@WhereClause;
set @SqlString ="select * from (" + @SqlString + ") as t where rowId between " + ltrim(str(@StartRecord)) + " and " + ltrim(str(@EndRecord));
end
else
begin
set @SqlString="select "+@ColumnNames+" from "+ @TableName+" where "+@WhereClause +" order by "+@OrderClause
end
--select @SqlString
Exec(@SqlString)
END