MYSQL分页存储过程及事务处理--转自peace

/*
--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