MYSQL分页存储过程及事务处理--转自peace

MYSQL的分页过程，和事务处理的一个测试过程。

 

/*

--名称：MYSQL版查询分页存储过程 by peace 2013-8-14

--输入参数：@fields        -- 要查询的字段用逗号隔开

--输入参数：@tables        -- 要查询的表

--输入参数：@where        -- 查询条件

--输入参数：@orderby    -- 排序字段

--输出参数：@page        -- 当前页计数从1开始

--输出参数：@pagesize    -- 每页大小

--输出参数：@totalcount -- 总记录数

--输出参数：@pagecount  -- 总页数 

*/

DROP PROCEDURE IF EXISTS Query_Pagination; 

CREATE PROCEDURE Query_Pagination

(

    in _fields varchar(2000),   

    in _tables text, 

    in _where varchar(2000),  

    in _orderby varchar(200),

    in _pageindex int,

    in _pagesize int,

    in _sumfields  varchar(200),/*增加统计字段2013-5-8 peaceli*/

    out _totalcount int ,

    out _pagecount int 

)

begin

   set @startRow = _pageSize*(_pageIndex -1);

   set @pageSize = _pageSize;  set @rowindex = 0;

     set @strsql = CONCAT('select sql_calc_found_rows @rowindex:=@rowindex+1 as rownumber,',_fields,' from ',_tables,case ifnull(_where,'') when '' then '' else concat(' where ',_where) end,' order by ',_orderby,' limit ',@startRow,',',@pageSize);

     prepare strsql from @strsql;

     execute strsql;

   deallocate prepare strsql;

   set _totalcount = found_rows(); 

   if (_totalcount <= _pageSize) then

                    set _pagecount = 1;

                    else if (_totalcount % _pageSize > 0) then

                    set _pagecount = _totalcount / _pageSize + 1;

                    else

                     set _pagecount = _totalcount / _pageSize;

            end if;

        end if;

if(ifnull(_sumfields,'') <> '') then set @sumsql = contact('select ',_sumfields,' from ',_tables,case ifnull(_where,'') when '' then '' else concat(' where ',_where) end); prepare sumsql from @sumsql; execute sumsql; deallocate prepare sumsql; end if; end

CREATE PROCEDURE TransTest(in p1 VARCHAR(20),in p2 VARCHAR(50))

BEGIN

declare err int default 0;  

 /*如果出现sql异常，则将err设置为1后继续执行后面的操作 */  

declare continue handler for sqlexception set err=1; -- 出错处理  

set autocommit = 0;

insert into sy_queryconfig(syq_id) values(p1); 

insert into sy_queryconfig(syq_id) values(p2); 

if err=1 then  

 ROLLBACK;

ELSE

 COMMIT;

end if;

END

 

CREATE PROCEDURE TransTest2(in p1 VARCHAR(20),in p2 VARCHAR(50))

BEGIN

/*只要发生异常就回滚*/ 

declare exit handler for sqlexception 

BEGIN

    ROLLBACK;

  /*返回异常处理结果等其它操作*/  

END; 

START TRANSACTION;

insert into sy_queryconfig(syq_id) values(p1); 

insert into sy_queryconfig(syq_id) values(p2); 

COMMIT;

END