insert into OPT (email, campaign_id) values('mom@cox.net',100)
where not exists( select * from OPT where (email ="mom@cox.net" and campaign_id =100)) ;
错误报告:SQL错误:ORA-00933:SQL命令未正确结束 00933. 00000 - “SQL命令未正确结束” *原因:
*操作:
如何在Oracle中插入一行数据,如果该行不存在?