mysql动态执行sql，这边重点代码是：
set f_sql=CONCAT('rename table cw_computer_resulttest to cw_computer_result',f_last,';');
set @ms=f_sql;
PREPARE stmt1 FROM @ms;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1 ;
其中@ms是系统变量，不用declare，这是重点
下面是写的 全部存储过程：（本例中还给出了嵌套cursor的应用）
drop PROCEDURE IF EXISTS cw_year1_deal;
delimiter $$
create PROCEDURE cw_year1_deal()
BEGIN
DECLARE f_date VARCHAR(20);
DECLARE f_month VARCHAR(20);
DECLARE f_last VARCHAR(20);
DECLARE DONE INT;
DECLARE I int DEFAULT 0;
DECLARE f_sql VARCHAR(200);
DECLARE d_cursor CURSOR FOR select date from tb_date where date>='2016-01-11' ;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET DONE = 1;
set f_last='201601';
set f_month='201601';
START TRANSACTION;
OPEN d_cursor;
READ_LOOP :LOOP
FETCH d_cursor INTO f_date;
IF DONE THEN
LEAVE READ_LOOP;
END IF;
set f_last=f_month;
set f_month =CONCAT(SUBSTR(f_date FROM 1 FOR 4),SUBSTR(f_date FROM 6 FOR 2));
if f_last<>f_month THEN
-- SET cal1=CONCAT(cal1," ","AND OPEDOC_ID = ","'",DoctorId,"'");
set f_sql=CONCAT('rename table cw_computer_resulttest to cw_computer_result',f_last,';');
set @ms=f_sql;
PREPARE stmt1 FROM @ms;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1 ;
DROP TABLE IF EXISTS `cw_computer_result`;
CREATE TABLE `cw_computer_result` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`date` date DEFAULT NULL,
`bianhao` varchar(20) DEFAULT NULL,
`licairenbh` varchar(500) DEFAULT NULL,
`licairen` varchar(200) DEFAULT NULL,
`SCHEDULE_ID` varchar(32) COMMENT '主键',
`jiekuandanhao` varchar(50) DEFAULT '0' COMMENT '借款ID',
`dangqistarttime` datetime DEFAULT NULL COMMENT '每期开始计时时间',
`dangqiyhtime` datetime DEFAULT NULL COMMENT '预计还款时间',
`dangqishtime` varchar(19) DEFAULT '',
`jiekuanhetongrfl` decimal(18,8) DEFAULT NULL,
`jiekuanhetongts` int(11) DEFAULT '0' COMMENT '每期天数',
`fangkuanje` decimal(21,2) DEFAULT NULL,
`dangqije` decimal(20,2) DEFAULT '0.00' COMMENT '预还本金',
`jiekuanfuwufeilx` decimal(20,2) DEFAULT '0.00' COMMENT '预还利息',
`jiekuangudingfy` varchar(10) DEFAULT '',
`jiekuanzjzyqfy` decimal(20,8) DEFAULT '0.00' COMMENT '借款-资金占用期费用',
`userid` varchar(32) DEFAULT NULL COMMENT '用户ID',
`username` varchar(255) DEFAULT NULL COMMENT '借款客户姓名',
`jiekuanhetongje` decimal(20,2) DEFAULT NULL COMMENT '借款总金额',
`fankuandate` datetime DEFAULT NULL COMMENT '借款成功时间',
`jiekuanyhdate` datetime DEFAULT NULL COMMENT '最后还款时间',
`licaibenjin` int(11) DEFAULT NULL,
`zijinduanrfl` varchar(200) DEFAULT NULL,
`zijinduanstarttime` date DEFAULT NULL,
`zijinduanendtime` date DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `date_index` (`date`),
KEY `SCHEDULE_ID` (`SCHEDULE_ID`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
end if;
-- select f_month;
call cw_deal(f_date);
SET I=I+1;
IF I%10000=0
THEN
SELECT I;
COMMIT;
START TRANSACTION;
END IF;
END LOOP READ_LOOP;
COMMIT;
CLOSE d_cursor;
END $$
delimiter ;
引用的存储过程代码：
drop PROCEDURE IF EXISTS cw_deal;
delimiter $$
create PROCEDURE cw_deal(IN indate varchar(20))
BEGIN
DECLARE f_date VARCHAR(20);
DECLARE I int DEFAULT 0;
DECLARE f_licairen VARCHAR(60);
DECLARE f_schedule_id varchar(32);
DECLARE f_jiekuandanghao varchar(50);
DECLARE f_dangqistarttime datetime;
DECLARE f_dangqiyhtime datetime;
DECLARE f_dangqishtime varchar(19);
DECLARE f_jiekuanhetongrfl decimal(18,8);
DECLARE f_jiekuanhetongts int(11);
DECLARE f_fangkuanje decimal(21,2);
DECLARE f_dangqije decimal(20,2);
DECLARE f_jiekuanfuwulx decimal(20,2);
DECLARE f_jiekuangudingfy varchar(10);
DECLARE f_userid varchar(32);
DECLARE f_username varchar(255);
DECLARE f_jiekuanhetongje decimal(20,2);
DECLARE f_jiekuanhetongksr datetime;
DECLARE f_jiekuanhetongyhr datetime;
DECLARE f_zijinduanje int(11);
DECLARE f_zijinduanfl varchar(200);
DECLARE f_zijinduanstarttime date;
DECLARE f_zijinduanendtime date;
DECLARE f_bianhao varchar(20);
DECLARE f_licairenbh varchar(100);
DECLARE f_fkje decimal(20,2);
DECLARE f_fkje2 decimal(20,2);
DECLARE f_lcbj decimal(20,2);
DECLARE f_ziyou decimal(20,2);
DECLARE flag INT;
DECLARE DONE INT;
DECLARE dcheck_cursor CURSOR FOR select bianhao,licairenbh,licairen,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime from temp_datecheck_20170122 where `date`=indate ORDER BY zijinduanrfl desc;
DECLARE cw_cursor CURSOR FOR select SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,userid,username,jiekuanhetongje, fankuandate ,jiekuanyhdate from tmp_detail
where is_deal =0 ;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET DONE = 1;
DROP temporary TABLE IF EXISTS `tmp_detail`;
CREATE temporary TABLE `tmp_detail` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`SCHEDULE_ID` varchar(32) NOT NULL COMMENT '主键',
`jiekuandanhao` varchar(50) DEFAULT '0' COMMENT '借款ID',
`dangqistarttime` datetime DEFAULT NULL COMMENT '每期开始计时时间',
`dangqiyhtime` datetime DEFAULT NULL COMMENT '预计还款时间',
`dangqishtime` varchar(19) NOT NULL DEFAULT '',
`jiekuanhetongrfl` decimal(18,8) DEFAULT NULL,
`jiekuanhetongts` int(11) DEFAULT '0' COMMENT '每期天数',
`fangkuanje` decimal(21,2) DEFAULT NULL,
`dangqije` decimal(20,2) DEFAULT '0.00' COMMENT '预还本金',
`jiekuanfuwufeilx` decimal(20,2) DEFAULT '0.00' COMMENT '预还利息',
`jiekuangudingfy` varchar(10) NOT NULL DEFAULT '',
`userid` varchar(32) NOT NULL COMMENT '用户ID',
`username` varchar(255) DEFAULT NULL COMMENT '借款客户姓名',
`jiekuanhetongje` decimal(20,2) DEFAULT NULL COMMENT '借款总金额',
`fankuandate` datetime DEFAULT NULL COMMENT '借款成功时间',
`jiekuanyhdate` datetime DEFAULT NULL COMMENT '最后还款时间',
is_deal int(1) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`),
KEY `SCHEDULE_IDindex` (`SCHEDULE_ID`),
KEY `is_dealindex` (`is_deal`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
insert into tmp_detail(SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,userid,username,jiekuanhetongje, fankuandate ,jiekuanyhdate)
select SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,userid,username,jiekuanhetongje, fankuandate ,jiekuanyhdate from temp_cw_result_20170119
where `date`=indate;
SET flag=1;
SET f_fkje=0;
SET f_fkje2=0;
START TRANSACTION;
OPEN dcheck_cursor;
READ_LOOP :LOOP
FETCH dcheck_cursor INTO f_bianhao,f_licairenbh,f_licairen,f_zijinduanje,f_zijinduanfl,f_zijinduanstarttime,f_zijinduanendtime;
set f_lcbj=f_zijinduanje;
IF DONE THEN
set f_ziyou=0;
select sum(fangkuanje) into f_ziyou from tmp_detail where is_deal =0;
INSERT INTO cw_computer_result(bianhao,licairenbh,date,licairen,SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,jiekuanzjzyqfy,userid,username,jiekuanhetongje,fankuandate,jiekuanyhdate,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime)
select 'bh_999','ziyou_999',indate,'自由资金',SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,0,userid,username,jiekuanhetongje, fankuandate ,jiekuanyhdate,f_ziyou,0.0,indate,indate from tmp_detail
where is_deal =0;
LEAVE READ_LOOP;
END IF;
OPEN cw_cursor;
inner_loop:LOOP
FETCH cw_cursor INTO f_schedule_id,f_jiekuandanghao,f_dangqistarttime,f_dangqiyhtime,f_dangqishtime,f_jiekuanhetongrfl,f_jiekuanhetongts,f_fangkuanje,f_dangqije,f_jiekuanfuwulx,f_jiekuangudingfy,f_userid,f_username,f_jiekuanhetongje,f_jiekuanhetongksr,f_jiekuanhetongyhr;
IF DONE = 1 THEN
IF flag =0
THEN
INSERT INTO cw_computer_result(bianhao,licairenbh,date,licairen,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime)
select f_bianhao,f_licairenbh,indate,f_licairen,f_zijinduanje,f_zijinduanfl,f_zijinduanstarttime,f_zijinduanendtime;
end if;
LEAVE inner_loop;
end IF;
SET flag=0;
IF f_fkje2>0
THEN
set f_lcbj=f_lcbj-f_fkje2;
IF f_lcbj>0
THEN
INSERT INTO cw_computer_result(bianhao,licairenbh,date,licairen,SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,jiekuanzjzyqfy,userid,username,jiekuanhetongje,fankuandate,jiekuanyhdate,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime)
select f_bianhao,f_licairenbh,indate,f_licairen,f_schedule_id,f_jiekuandanghao,f_dangqistarttime,f_dangqiyhtime,f_dangqishtime,f_jiekuanhetongrfl,f_jiekuanhetongts,f_fkje2,f_dangqije,f_jiekuanfuwulx,f_jiekuangudingfy,f_fkje2*f_zijinduanfl,f_userid,f_username,f_jiekuanhetongje,f_jiekuanhetongksr,f_jiekuanhetongyhr,f_zijinduanje,f_zijinduanfl,f_zijinduanstarttime,f_zijinduanendtime;
update tmp_detail set is_deal=1 where SCHEDULE_ID=f_schedule_id;
SET f_fkje2=0;
END IF;
IF f_lcbj<=0
THEN
set f_fkje = f_fkje2+f_lcbj;
set f_fkje2 = -f_lcbj;
INSERT INTO cw_computer_result(bianhao,licairenbh,date,licairen,SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,jiekuanzjzyqfy,userid,username,jiekuanhetongje,fankuandate,jiekuanyhdate,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime)
select f_bianhao,f_licairenbh,indate,f_licairen,f_schedule_id,f_jiekuandanghao,f_dangqistarttime,f_dangqiyhtime,f_dangqishtime,f_jiekuanhetongrfl,f_jiekuanhetongts,f_fkje,f_dangqije,f_jiekuanfuwulx,f_jiekuangudingfy,f_fkje*f_zijinduanfl,f_userid,f_username,f_jiekuanhetongje,f_jiekuanhetongksr,f_jiekuanhetongyhr,f_zijinduanje,f_zijinduanfl,f_zijinduanstarttime,f_zijinduanendtime;
set DONE =1;
SET flag=1;
END IF;
else
set f_lcbj=f_lcbj-f_fangkuanje;
IF f_lcbj>0
THEN
INSERT INTO cw_computer_result(bianhao,licairenbh,date,licairen,SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,jiekuanzjzyqfy,userid,username,jiekuanhetongje,fankuandate,jiekuanyhdate,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime)
select f_bianhao,f_licairenbh,indate,f_licairen,f_schedule_id,f_jiekuandanghao,f_dangqistarttime,f_dangqiyhtime,f_dangqishtime,f_jiekuanhetongrfl,f_jiekuanhetongts,f_fangkuanje,f_dangqije,f_jiekuanfuwulx,f_jiekuangudingfy,f_fangkuanje*f_zijinduanfl,f_userid,f_username,f_jiekuanhetongje,f_jiekuanhetongksr,f_jiekuanhetongyhr,f_zijinduanje,f_zijinduanfl,f_zijinduanstarttime,f_zijinduanendtime;
update tmp_detail set is_deal=1 where SCHEDULE_ID=f_schedule_id;
END IF;
IF f_lcbj<=0
THEN
set f_fkje = f_fangkuanje+f_lcbj;
set f_fkje2 = -f_lcbj;
INSERT INTO cw_computer_result(bianhao,licairenbh,date,licairen,SCHEDULE_ID,jiekuandanhao,dangqistarttime,dangqiyhtime,dangqishtime,jiekuanhetongrfl,jiekuanhetongts,fangkuanje,dangqije,jiekuanfuwufeilx,jiekuangudingfy,jiekuanzjzyqfy,userid,username,jiekuanhetongje,fankuandate,jiekuanyhdate,licaibenjin,zijinduanrfl,zijinduanstarttime,zijinduanendtime)
select f_bianhao,f_licairenbh,indate,f_licairen,f_schedule_id,f_jiekuandanghao,f_dangqistarttime,f_dangqiyhtime,f_dangqishtime,f_jiekuanhetongrfl,f_jiekuanhetongts,f_fkje,f_dangqije,f_jiekuanfuwulx,f_jiekuangudingfy,f_fkje*f_zijinduanfl,f_userid,f_username,f_jiekuanhetongje,f_jiekuanhetongksr,f_jiekuanhetongyhr,f_zijinduanje,f_zijinduanfl,f_zijinduanstarttime,f_zijinduanendtime;
set DONE =1;
SET flag=1;
END IF;
END IF;
end LOOP inner_loop;
CLOSE cw_cursor;
SET DONE=0;
SET I=I+1;
IF I%10000=0
THEN
SELECT I;
COMMIT;
START TRANSACTION;
END IF;
END LOOP READ_LOOP;
COMMIT;
CLOSE dcheck_cursor;
END $$
delimiter ;