oracle怎么删除这几条空数据

Posted 2023-04-13

delete from SERVICE_USER r where r.service_id=622 and r.userinfo_id <2

select u.* from SERVICE_USER u order by u.create_time desc

参考技术A delete from service_user where userinfo_id is null;(删除全部userinfo_id为空的数据）
delete from service_user where create _time <=to_date('2014-07-24 14:18:19','yyyy-mm-dd hh24:mi:ss') and create_time>=to_date('2014-07-24 14:16:18','yyyy-mm-dd hh24:mi:ss') and userinfo_id is null;(删除图中标注的数据）；本回答被提问者采纳 参考技术B delete from  SERVICE_USER r where r.service_id=622 and (r.userinfo_id  is null or  trim(r.userinfo_id)='');
commit;

记得提交

参考技术C delete from SERVICE_USER where userinfo_id is null; 参考技术D delete from  SERVICE_USER r where userinfo_id is null and r.service_id=622

oracle开展分组后，取出每组的前几条数据

参考技术A oracle进行分组后，取出每组的前几条数据SELECT *FROM (SELECT 分组的字段名,ROW_NUMBER() OVER(PARTITION BY 分组的字段名 ORDER BY 排序的字段名) AS RNFROM 表名)WHERE RN <= 10�0�2本回答被提问者采纳