-- 創(chuàng)建一個 名為sub_track的存儲過程CREATE PROCEDURE sub_track()begin  declare i int;  -- 定義 循環(huán)變量i  set @imei =0;  -- 定義imei最后兩位  set @t_count=0; -- 定義 表有多少條記錄變量  SET i=0;  SELECT COUNT(*)INTO @t_count FROM track;        -- 獲取表的條數(shù)while i <= @t_count do                   -- 循環(huán) SELECT RIGHT(mac_id,2) INTO @imei FROM track ORDER BY gpstime DESC LIMIT i, 1;  -- 獲取 imei 最后兩位   set @imei =CONVERT(@imei,SIGNED);                       -- 轉(zhuǎn)為數(shù)字  -- SQL 語句  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語句  PREPARE insert_track from @inset_sql;                  -- 預(yù)編譯  EXECUTE insert_track;                          -- 執(zhí)行sql語句  set i=i+1;-- 結(jié)束循環(huán)end while;  commit;end-- 執(zhí)行存儲過程CALL sub_track();@flm