-- 创建一个 名为sub_track的存储过程
CREATE PROCEDURE sub_track()


begin

    declare i int;   -- 定义 循环变量i

    set @imei =0;    -- 定义imei最后两位

    set @t_count=0;  -- 定义 表有多少条记录变量

    SET i=0;

    SELECT COUNT(*)INTO @t_count FROM track;               -- 获取表的条数

while i <= @t_count do                                      -- 循环

  SELECT RIGHT(mac_id,2) INTO @imei FROM track ORDER BY gpstime DESC LIMIT i, 1;   -- 获取 imei 最后两位

    set @imei =CONVERT(@imei,SIGNED);                                              -- 转为数字

    -- SQL 语句

    set @sql1=" (

                             mac_id,mac_type,channel,type,x,y,gpstime,bvalid,speed,dir,s1,s2,s3,s4,ins_date,imagefile,battery

                          )

                        SELECT

                             mac_id,mac_type,channel,type,x,y,gpstime,bvalid,speed,dir,s1,s2,s3,s4,ins_date,imagefile,battery

                        FROM track

                        ORDER BY

                            gpstime DESC

                        LIMIT ";

    set @inset_sql=CONCAT("INSERT INTO track_",@imei,@sql1,i,",",1);        -- 拼接完整的插入 sql语句

    PREPARE insert_track from @inset_sql;                                   -- 预编译

    EXECUTE insert_track;                                                   -- 执行sql语句

    set i=i+1;

-- 结束循环

end while;

    commit;

end

-- 执行存储过程

CALL sub_track();