Oracle 逐条和批量插入数据方式对比

创建测试表

create table base_users

(

userid varchar2(16),

username varchar2(32),

passwd varchar2(16)

)tablespace cat_data;

采用一条一条插入的方式
create or replace procedure insert_data_one_by_one(n in number)
as
currentId number(16) := 0;
l_userid varchar2(16);
l_username varchar2(32);

sqltext varchar2(256);

begin

dbms_output.put_line('begin ...' || to_char(current_timestamp, 'HH24:MI:SSxFF'));

sqltext := 'insert into base_users(userid, username, passwd) values(:userid, :username,' || '111111 )';

loop

currentId:=currentId + 1;

l_userid:= to_char(currentId);

l_username:= to_char(18600000000 + currentId);

execute immediate sqltext using l_userid, l_username;

exit when currentId >= n;

end loop;

commit;

dbms_output.put_line('end commit ...' || to_char(current_timestamp, 'HH24:MI:SSxFF'));

end
insert_data_one_by_one;

/

采用批量插入的方式
create or replace procedure insert_data_bulk(n in number)
as
i int;
tmp_userid number;
tmp_username number;
type useridArray is table of varchar2(16) index by binary_integer;
type usernameArray is table of varchar2(32) index by binary_integer;
puserid useridArray;
pusername usernameArray;
begin
dbms_output.put_line('begin
...' || to_char(current_timestamp, 'HH24:MI:SSxFF'));
tmp_userid := 1;
tmp_username := 18600000000;
for i in 1 .. n loop
puserid(i) := tmp_userid;
pusername(i) := tmp_username;
tmp_userid := tmp_userid + 1;
tmp_username := tmp_username + 1;
end loop;
forall i in 1 ..n
insert into base_users(userid, username, passwd)
values(puserid(i), pusername(i), '111111');
commit;
dbms_output.put_line('end
...' || to_char(current_timestamp, 'HH24:MI:SSxFF'));
endinsert_data_bulk;
/

测试1千万条数据的插入
SQL>set serveroutput on
SQL>begin
insert_data_one_by_one(10000000);
end;
/
begin ...22:14:01.572928000

end commit ...22:20:43.911104000

SQL>truncate table base_users;

SQL>begin
insert_data_bulk(10000000);
end;
/
begin ...22:25:31.497810000

end ...22:27:23.801515000