oracle一次插入多条的方法

1.采用union all拼接查询方式

insert into table_name(ID,NAME,AME)select 001,'张三',21 from dual
union all select 002,'Multi',31 from dual

2.采用insert all的方法

由于insert all方式插入多条时，通过sequence获取的值是同一个，不会自动获取多个，所以id需要通过其他方式设置，(我这里采用触发器方式自动设置id)
(1).创建表

create or replace trigger tr_test_insert
before insert on test_insert
for each row
beginselect seq_test_insert.nextval into :new.data_id from dual;
end;  

(2).创建序列

create sequence seq_test_insert 
minvalue 1
maxvalue 999999999999999999999999
start with 1
increment by 1
cache 20;

(3).创建触发器
通过触发器自动给insert语句设置id值

create or replace trigger tr_test_insert
before insert on test_insert
for each row
beginselect seq_test_insert.nextval into :new.data_id from dual;
end; 

(4).插入测试数据：

insert all 
into test_insert(user_name,address) values('aaa','henan')
into test_insert(user_name,address) values('bbb','shanghai')
into test_insert(user_name,address) values('ccc','beijing')
select * from dual;

另外，insert all还支持往不同的表里插入数据，如：

insert all 
into table1(filed1,filed2)values('value1','value2')
into table2(字段1，字段2，字段3) values(值1，值2，值3)
select * from dual;

3.ibatis结合oracle批量插入数据

<insert id="insert_table" parameterClass="java.util.List">
insert  into sj_test( col1 , col2 , col3 ) values   select 
col1 , col2 , col3 
from (
<iterate conjunction=" union all ">
select 
#test[].col1# as col1  , #test []. col2# as col2, # test[].col3#  as col3  from dual
</iterate>
)
</insert>

使用这种方法需要向dao层传递一个List集合