自己手写的高效分页存储过程代码

CREATE PROCEDURE Pages
@TableNames VARCHAR(200), --表名，可以是多个表，但不能用别名
@PrimaryKey VARCHAR(100), --主键，可以为空，但@Order为空时该值不能为空
@Fields VARCHAR(800), --要取出的字段，可以是多个表的字段，可以为空，为空表示select *
@PageSize INT, --每页记录数
@CurrentPage INT, --当前页，0表示第1页
@Filter VARCHAR(200) = '', --条件，可以为空，不用填 where
@Order VARCHAR(200) = '' --排序，可以为空，为空默认按主键升序排列，不用填 order by
AS
BEGIN
declare @topRow varchar(12)
declare @tempPageSize varchar(12)
if(len(@Order)>0)
begin
set @Order=' order by '+@Order
end
else
begin
set @Order=''
end
if (len(@Filter)<1)
begin
set @Filter=' 1=1'
end
if(@CurrentPage-1<=0)
set @CurrentPage=0
set @topRow= rtrim(ltrim(str(@PageSize*(@CurrentPage-1))))
set @tempPageSize= rtrim(ltrim(str(@PageSize)))
exec('
declare @temptable table(rownum int identity(1,1),Gid varchar(12))'+'
declare @datatable table(Gid varchar(12))'+'
DECLARE @Timer datetime'+'
SET @Timer = getdate() '+'
SET NOCOUNT ON '+'
insert into @temptable(Gid) select '+@PrimaryKey+' from '+@TableNames+' where '+@Filter+@Order+'
insert into @datatable(Gid) select top '+@tempPageSize+'Gid from @temptable where rownum>'+@topRow+'
set rowcount '+@tempPageSize+'

select '+@Fields+' from '+@TableNames+' where '+@Filter+' and '+@PrimaryKey+' in (select Gid from @datatable)'+@Order+'
set rowcount 0'+'
print(DATEDIFF(millisecond, @Timer, getdate()))')
print('insert into @temptable(Gid) select '+@PrimaryKey+' from '+@TableNames+' where '+@Filter+@Order)
print('select '+@Fields+' from '+@TableNames+' where '+@Filter+' and '+@PrimaryKey+' in(select Gid from @datatable) '+@Order)
end
GO