ORACLE SQL一條語句同時插入多個表

今天在網上看到乙個貼子，用一條語句，將資料同時插入多個表中，覺得很新奇，就自己練了一下，將語句記錄下來

step1：建立三個表，用於實驗測試：

create table t_table(object_id number, object_name varchar2(128), object_type varchar2(19));

create table t_index(object_id number, object_name varchar2(128), object_type varchar2(19));
create table t_view(object_id number, object_name varchar2(128), object_type varchar2(19));

step2：向三個表中插入資料

insert all 

into t_table(object_id, object_name,object_type)
values(object_id, object_name,object_type)
into t_index(object_id, object_name,object_type)
values(object_id, object_name,object_type)
into t_view(object_id, object_name,object_type)
values(object_id, object_name,object_type)
select object_id, object_name,object_type 
from dba_objects where object_type in('view','table','index');

step3：清空三張表，分類插入資料，即帶條件插入

truncate table t_table;

truncate table t_index;
truncate table t_view;

將資料分類插入

insert all 

when   object_type='table' then 
into t_table(object_id, object_name,object_type)
values(object_id, object_name,object_type)
when   object_type='view' then 
into t_index(object_id, object_name,object_type)
values(object_id, object_name,object_type)
else   into t_view(object_id, object_name,object_type)
values(object_id, object_name,object_type)
select object_id, object_name, object_type
from dba_objects where object_type in ('view','table','index');

insert first 

when   object_id<1000 then 
into t_table(object_id, object_name,object_type)
values(object_id, object_name,object_type)
when   object_id>=1000 and object_id<2000 then 
into t_index(object_id, object_name,object_type)
values(object_id, object_name,object_type)
else   into t_view(object_id, object_name,object_type)
values(object_id, object_name,object_type)
select object_id, object_name, object_type
from dba_objects where object_type in ('view','table','index');

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