一. insert语句插入多条记录
Mysql数据库
insert into persons (id_p, lastname , firstName, city )values(200,'haha' , 'deng' , 'shenzhen'),(201,'haha2' , 'deng' , 'GD'),(202,'haha3' , 'deng' , 'Beijing');
Oracle数据库
insert all
into Student(id, name, sex, age, tel) values ('12', 'jack1', '男', 12, '13345674567' )
into Student(id, name, sex, age, tel) values ('13', 'jack2', '男', 13, '13345674567')
select * from dual;
二. string去掉最后一个字符
String str4 = "1,2,3,6,7,";
str4 = str4.substring(0, str4.length() -1);
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