發表：csdn
日期：20090828
在oracle中關於多表插入的有四種分別是：
1.無條件的多表insert all
2.帶條件的多表insert all
3.帶條件的多表insert first
4．pivoting insert
語法：insert
[all] [first]
[when condition then] [insert_into_clause values_clause]
[else] [insert_into_clause values_clause]
(subquery)
用例子說明，表結構如下：
drop table table_all;
create table table_all(
main varchar2(10),
col1 varchar2(10),
col2 varchar2(10),
col3 varchar2(10),
col4 varchar2(10),
col5 varchar2(10),
col6 varchar2(10));
---插入資料
insert into table_all select 'main1','1','2','3','4','5','6' from dual;
insert into table_all select 'main2','1','2','3','4','5','6' from dual;
insert into table_all select 'main3','1','2','3','4','5','6' from dual;
insert into table_all select 'main4','1','2','3','4','5','6' from dual;
insert into table_all select 'main5','1','2','3','4','5','6' from dual;
insert into table_all select 'main6','1','2','3','4','5','6' from dual;
insert into table_all select 'main7','7','7','7','4','5','6' from dual;
insert into table_all select 'main7','7','7','7','4','5','6' from dual;
insert into table_all select 'main7','7','7','7','4','5','6' from dual;
insert into table_all select 'main7','7','7','7','4','5','6' from dual;
insert into table_all select 'main7','8','8','8','4','5','6' from dual;
---子表
create table table_b as select main,col1,col2,col3 from table_all where 1=0
create table table_a as select main,col4,col5,col6 from table_all where 1=0
create table table_col as select main,col1 col from table_all
where 1=0
create table table_all_1 as select * from table_all where 1=0
create table table_
all_2
as select * from table_all where 1=0
create table table_
all_3
as select * from table_all where 1=0
無條件的多表insert all
insert all
into table_b (main,col1,col2,col3) values (main,col1,col2,col3)
into table_a (main,col4,col5,col6) values (main,col4,col5,col6)
select main,col1,col2,col3,col4,col5,col6 from table_all;
2.帶條件的多表insert all
insert all
when main = 'main7' then
into table_all_1
when col1 = '8' then
into table_all_2
else
into table_all_3
select * from table_all
3.帶條件的多表insert first
delete from table_all_1
delete from table_all_2
delete from table_all_3
insert first
when main = 'main7' then
into table_all_1
when col1 = '8' then
into table_all_2
else
into table_all_3
select * from table_all
insert all與insert first 的區別在與:即如果使用first,當第乙個when條件滿足時,執行第乙個into語句,在後面的條件不再判斷,直接跳到下一行資料.
檢視table_all_2 可以發現：insert all語句執行後 有資料，而在 insert first 語句執行後沒有資料。
4．pivoting insert
insert all
into table_col values (main,col1)
into table_col values(main,col2)
into table_col values(main,col3)
into table_col values(main,col4)
into table_col values(main,col5)
into table_col values(main,col6)
select * from table_all where main='main1'
oracle 多表插入
建立表 create table tb user id integer primary key,user name varchar2 20 not null,user age integer not null create sequence seq user increment by 1 start...
oracle的多表插入
q5，oracle的多表插入操作。在業務處理過程中，經常會碰到將業務資料按照條件分別插入不同的資料表的問題，按照傳統的處理方式，需要分條件執行多次檢索後分別插入不同的表單，這樣因為執行了重複的檢索造成cpu和記憶體的浪費，從oracle9i開始引入了insert all關鍵字支援將某張表的資料同時插...
oracle實現同時多表插入
oracle實現同時多表插入 最簡單的，一條select結果向多個表中插入 insert all into test1 id,name,cj into test2 id,name,cj into test3 id,name,cj select id,name,cj from test 依據條件實現 ...