insert into OPT (email, campaign_id) values('[email protected]',100)
where not exists(select * from OPT where (email ="[email protected]" and campaign_id =100)) ;
Error report: SQL Error: ORA-00933: SQL command not properly ended 00933. 00000 - "SQL command not properly ended" *Cause:
*Action:甲骨文插入如果不存在語句
如何插入新行如果Oracle不存在呢？
基於已存在的另一條記錄插入某些內容（在Oracle中）的正確方法是使用MERGE語句。
請注意，這個問題已經在這裏回答了SO：
insert into OPT (email, campaign_id)
select '[email protected]',100
from dual
where not exists(select *
from OPT
where (email ="[email protected]" and campaign_id =100));
insert into OPT (email, campaign_id)
select '[email protected]' as email, 100 as campaign_id from dual MINUS
select email, campaign_id from OPT;
如果已經存在用一記[email protected]/100在OPT中，MINUS將從select '[email protected]' as email, 100 as campaign_id from dual記錄中減去此記錄，並且不會插入任何內容。另一方面，如果沒有這樣的記錄，則MINUS不會扣分任何東西，並且將插入值[email protected]/100。
由於p.marino已經指出的那樣，merge可能是你的問題的更好（更正確）的解決方案，因爲它是專門設計來解決你的任務。