oracle生成测试数据

drop table TestTable;
create table TestTable tablespace users as
select rownum as id,
to_char(sysdate + rownum/24/3600, 'yyyy-mm-dd hh24:mi:ss') as inc_datetime,
trunc(dbms_random.value(0, 100)) as random_id,
dbms_random.string('x', 20) random_string
from dual
connect by level <= 100000;

insert into TestTable
(ID, INC_DATETIME,RANDOM_ID,RANDOM_STRING)
select rownum as id,
to_char(sysdate + rownum / 24 / 3600, 'yyyy-mm-dd hh24:mi:ss') as inc_datetime,
trunc(dbms_random.value(0, 100)) as random_id,
dbms_random.string('x', 20) random_string
from dual
connect by level <= 1000000;

 

 

分批插入：

-- 创建空表
CREATE TABLE TEST_TABLE (
id NUMBER,
inc_datetime VARCHAR2(19),
random_id NUMBER,
random_string VARCHAR2(20)
) TABLESPACE users;

-- 插入数据（分批次）
BEGIN
FOR i IN 1..10 LOOP
INSERT INTO TEST_TABLE (id, inc_datetime, random_id, random_string)
SELECT rownum + (i - 1) * 200000 AS id,
TO_CHAR(SYSDATE + (rownum + (i - 1) * 200000) / 24 / 3600, 'yyyy-mm-dd hh24:mi:ss') AS inc_datetime,
TRUNC(DBMS_RANDOM.VALUE(0, 100)) AS random_id,
DBMS_RANDOM.STRING('x', 20) AS random_string
FROM dual
CONNECT BY LEVEL <= 200000;

COMMIT; -- 提交每批次的插入
END LOOP;
END;
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