SQL分页存储过程支持连接查询等复杂的SQL

CREATE PROCEDURE Pagination
(
@SQL nvarchar(1024),
@PageSize int = 20, --分页大小
@PageIndex int = 0, --分页索引
@Sort nvarchar(100) = '''', --排序字段
@TotalCount int = 0 output --总数
)
AS

set nocount on
/*声明查询字符串*/
declare @strSQL nvarchar(4000)

set @strSQL = '' select @TotalCount=count(*) from () as t ''

/*取得查询结果总数*/
exec sp_executesql
@strSQL,
int=0 OUTPUT'',
@TotalCount=@TotalCount OUTPUT

declare @ItemCount int
declare @_PageIndex int

set @_PageIndex = @PageIndex + 1;
/*确定搜索边界*/
set @ItemCount = @TotalCount - @PageSize * @_PageIndex

if(@ItemCount <0)
set @ItemCount = @ItemCount + @PageSize
else
set @ItemCount = @PageSize

if(@ItemCount <0) return 1

if(@Sort != '''')
begin
/*声明排序变量*/
declare @IndexSort1 nvarchar(50), @IndexSort2 nvarchar(50), @Sort1 nvarchar(50), @Sort2 nvarchar(50)

SET @Sort1 = @Sort
SET @Sort2 = Replace(Replace(Replace(@Sort, ''DESC'', ), ''ASC'', ''DESC''), , ''ASC'')

print @Sort1
print @Sort2

set @strSQL = ''SELECT * FROM
(SELECT TOP '' + STR(@ItemCount) + '' * FROM
(SELECT TOP '' + STR(@PageSize * @_PageIndex) + '' * FROM
() AS t0
ORDER BY +'') AS t1
ORDER BY +'') AS t2
ORDER BY ''
end
else
begin
set @strSQL = ''SELECT * FROM
(SELECT TOP '' + STR(@ItemCount)