我不知道如何在不使用 FOR 循环的情况下放置 1000000 个虚拟数据。这是我使用的代码:

CREATE TABLE dummy_records (
dummy_id number not null,
dummy_name varchar2(100)
);

BEGIN
    FOR loop_counter IN 1..1000000 LOOP
    INSERT INTO dummy_records (dummy_id, dummy_name) VALUES (loop_counter, dbms_random.value(1,100)); 
    END LOOP; 
END;

最佳答案

按级别简单连接怎么样？

create table mytable as
select level dummy_id,
dbms_random.string('U', 20) dummy_name
from dual connect by level < 1000001

http://sqlfiddle.com/#!4/8d677/1

https://stackoverflow.com/questions/67978613/