sql存儲過程實例--動態(tài)根據表數據復制一個表的數據到另一個表

-- 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
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);                       -- 轉為數字
  -- 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;                  -- 預編譯
  EXECUTE insert_track;                          -- 執(zhí)行sql語句
  set i=i+1;
-- 結束循環(huán)
end while;
  commit;
end
-- 執(zhí)行存儲過程
CALL sub_track();
@flm