select * from dba_users; 查看数据库里面所有用户,前提是你是有dba权限的帐号,如sys,system
select * from all_users; 查看你能管理的所有用户!
select * from user_users; 查看当前用户信息 !
select * from TRANS_ORGANIZATIONINFO  where addtime > to_date('2021-1-1' ,'YYYY-MM-DD') hh24:mi:ss
INSERT INTO table_name (列1, 列2,...) VALUES (值1, 值2,....)
UPDATE table_name SET FILEPATH=REPLACE(FILEPATH,'原子符','新字符'')
select seqname.currval from dual 查询序列当前值
select seqname.nextval from dual 查询序列下一值
with m as (select * from table_name ) select * from m order by id desc