mysql: select, insert, delete and update in one query

Question

i need in one query use select, insert, delete and update.

(I need copy data from old table in to new, then delete old, and update another).

Insert and selec

Answer 1

You can't combine Select/Update/etc into one query. You will have to write separate queries for each operation you intend to complete.

Answer 2

MySQL does not support MERGE, so you'll have to do it in two queries:

INSERT
INTO    news_n (id, data)
SELECT  id, data
FROM    news
WHERE   id > 21
ON DUPLICATE KEY UPDATE
SET     data = news.data

DELETE
FROM    news_n
WHERE   id NOT IN
        (
        SELECT  id
        FROM    news
        WHERE   id > 21
        )

, provided you have PRIMARY KEY (id) in both tables.

Answer 3

You can't do it all in one query, but you can do it all in one transaction if you are using a transactional store engine (like InnoDB). This might be what you want, but it's hard to tell only using the information you provided in your question.

START TRANSACTION;

INSERT...;
DELETE...
UPDATE...;

COMMIT;

Answer 4

In one query i dont think its possible.

You can try writing a Stored Procedure and using Triggers you may achieve that