【Oracle123】自动批量生成测试数据

背景:

系统需要改进PT,针对数据库性能需要模拟线上百万级数据量。

 

参考:

直接生成数据:https://www.cnblogs.com/liuweihua/archive/2012/05/05/2484444.html

插入大量数据:https://blog.csdn.net/weixin_33796205/article/details/86327128

生成唯一guid:https://blog.csdn.net/jgj0129/article/details/53583348

 

Sample1:

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,
                   sys_guid() guid
              from dual
            connect by level <= 10;

 

Sample2:

select lower(rawtohex(SYS_GUID())) GUID from user_table;  --生成guid不唯一

select (select lower(rawtohex(SYS_GUID())) from DUAL) GUID from user_table; --生成guid相同

 

posted @ 2020-06-05 12:55  CathyGao2018  阅读(578)  评论(0编辑  收藏  举报