coffeebreak的专栏

delete from lamostv29Pilot where target in (select target from lamostDRsumstd);大概有7万条数据卡死出不来 delete a from  lamostv29Pilot as a inner join  lamostDRsumstd  as b on a.target=b.target;Query OK, 75

create table file_download(id int(5) not null auto_increment,login_name varchar(20) not null, name_id int(5) not null, file_name varchar(50) not null, download_time timestamp not null default current_