Mysql必读SQL分页查询存储过程代码分享

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-----作者:张欣宇
-----时间:2013-06-28
-----简介:根据参数和条件分页查询
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Create proc [dbo].[Up_PagingQueryByParameter]
(
 ----- 表名或能查询到结果的SQL语句{SQL语句左右必须有括号例:(select * from tbl1)}
 @TableName varchar(max),
 ----- 要查询的列名语句; 可空默认*
 @ColumnName varchar(5000),
 ----- 用来排序的列; 不可为空
 @OrderByColumnName varchar(50),
 ----- 排序desc(倒序5.4.3.2.1)或asc(正序1.2.3.4.5); 可空默认asc
 @ShrtBy varchar(4),
 ----- Where条件; 可空默认1=1
 @Where varchar(5000),
 ----- 每页显示数; 可空默认20
 @PageShows int,
 ----- 当前页数; 可空默认1
 @CurrentPage int,
 ----- 0为分页查询;其他为查询全部; 可空默认0
 @IsPaging int
)
as
begin
 ----- 参数检查及规范
 if isnull(@Where,N'')=N'' set @Where = N'1=1';
 if isnull(@ColumnName,N'')=N'' set @ColumnName = N'*';
 if isnull(@PageShows,0)<1 set @PageShows = 20;
 if isnull(@CurrentPage,0)<1 set @CurrentPage = 1;
 if isnull(@ShrtBy,N'')=N'' set @ShrtBy = 'asc';
 if isnull(@IsPaging,0)<>1 set @IsPaging = 0;
 ----- 定义
 -- 拼接的SQL语句
 declare @SqlStr nvarchar(max);
 declare @SqlWithStr nvarchar(max);
 -- 开始条数
 declare @StartIndex int;
 -- 结束条数
 declare @EndIndex int;
 ----- 赋值
 set @StartIndex = (@CurrentPage-1)*@PageShows+1;
 print(@CurrentPage);
 print(@PageShows);
 print(@StartIndex);
 set @EndIndex = @CurrentPage*@PageShows;
 print(@EndIndex);
 set @OrderByColumnName=@OrderByColumnName+' '+@ShrtBy;
 ----- 分页查询
 set @SqlWithStr = N'with temp as(select ROW_NUMBER() over(order by '+@OrderByColumnName+N') as RowNumber,'+@ColumnName+N' from '+@TableName+N' as tableName where '+@Where+N')';
 if(@IsPaging = 0)
 begin
 set @SqlStr = @SqlWithStr + N' select '+@ColumnName+N' from temp where temp.RowNumber between '+convert(nvarchar(20),@StartIndex)+N' and '+convert(nvarchar(20),@EndIndex)+N'';
 ---- print(@SqlStr);
 exec(@SqlStr);
 ----- 总数查询
 set @SqlStr = @SqlWithStr + N' select count(*) as TotalNumber from temp';
 ---- print(@SqlStr);
 exec(@SqlStr);
 end
 else
 begin
 set @SqlStr = @SqlWithStr + N' select '+@ColumnName+N' from temp';
 ---- print(@SqlStr);
 exec(@SqlStr);
 end
end