mysql 的sql语句

Posted 2020-11-21

1 procdure 存储过程 用游标循环
BEGIN
DECLARE devsn varchar(100) default null;
DECLARE serialNo varchar(40) default null;
DECLARE fcloor int(11) DEFAULT NULL ;
DECLARE nextIntime dateTime default null;
Declare modelName varchar(200) default null;
Declare maintainName varchar(200) default null;
Declare propertyName varchar(200) default null;
DECLARE flg boolean default true;
DECLARE name varchar(200) default null;
// 获取结果集游标
DECLARE cur CURSOR FOR
select * from ems.sheet3 where ems.sheet3.设备注册代码 not in (select ems.tbl_user_dev.user_dev_sn
from ems.tbl_user_dev );
// 当不能发现时设置为false
DECLARE CONTINUE HANDLER FOR NOT FOUND SET flg = false;

 open cur; 
                while(flg) do
                FETCH cur into devsn,name,serialNo,nextIntime,fcloor,propertyName,maintainName;
                    if(flg) then
                    insert into tbl_user_dev (tbl_user_dev.user_dev_sn,
               tbl_user_dev.factory_no,
                        tbl_user_dev.user_dev_model_id,
                        tbl_user_dev.maintenance_organization_id,
                        tbl_user_dev.using_organization_id)
                    select devsn,serialNo,
                (select tbl_user_dev_model.id from tbl_user_dev_model where tbl_user_dev_model.model_name=name),
                (select tbl_org.id from tbl_org where tbl_org.org_name=maintainName and tbl_org.org_type=‘01‘),
                (select tbl_org.id from tbl_org where tbl_org.org_name=propertyName and tbl_org.org_type=‘02‘);                     

        insert into tbl_elevator ( 
            tbl_elevator.user_dev_id,
            tbl_elevator.nextin_spection_date,
            tbl_elevator.floor )
            select (select tbl_user_dev.id from tbl_user_dev where tbl_user_dev.user_dev_sn=devsn),
                        nextIntime,
                        fcloor;
                end if;
        end WHILE;
 close cur;

end

// 注意：当插入的值要去继续查找时要用select 而不是 values() 而且将select的结果用扩好括起来