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:
how to insert a new row if it doesn't exists in Oracle?
This question is related to
oracle
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));
MERGE INTO OPT
USING
(SELECT 1 "one" FROM dual)
ON
(OPT.email= '[email protected]' and OPT.campaign_id= 100)
WHEN NOT matched THEN
INSERT (email, campaign_id)
VALUES ('[email protected]',100)
;
Another approach would be to leverage the INSERT ALL syntax from oracle,
INSERT ALL
INTO table1(email, campaign_id) VALUES (email, campaign_id)
WITH source_data AS
(SELECT '[email protected]' email,100 campaign_id
FROM dual
UNION ALL
SELECT '[email protected]' email,200 campaign_id
FROM dual)
SELECT email
,campaign_id
FROM source_data src
WHERE NOT EXISTS (SELECT 1
FROM table1 dest
WHERE src.email = dest.email
AND src.campaign_id = dest.campaign_id);
INSERT ALL also allow us to perform a conditional insert into multiple tables based on a sub query as source.
There are some really clean and nice examples are there to refer.
The correct way to insert something (in Oracle) based on another record already existing is by using the MERGE statement.
Please note that this question has already been answered here on SO:
insert into OPT (email, campaign_id)
select 'mom@coxnet' as email, 100 as campaign_id from dual MINUS
select email, campaign_id from OPT;
If there is already a record with [email protected]/100 in OPT, the MINUS will subtract this record from the select 'mom@coxnet' as email, 100 as campaign_id from dual record and nothing will be inserted. On the other hand, if there is no such record, the MINUS does not subract anything and the values mom@coxnet/100 will be inserted.
As p.marino has already pointed out, merge is probably the better (and more correct) solution for your problem as it is specifically designed to solve your task.
Source: Stackoverflow.com