maria-discuss team mailing list archive

[Sergei Golubchik <serg@xxxxxxxxxxx>]

Hi, Yuki!

On Jan 22, Yuki . wrote:
> 
> I made a post at
> https://stackoverflow.com/questions/48306962/mysql-insert-id-for-insert-select-statement
> but have not received any helpful answer, may be you could help me.  I
> am using MaridDB but I read MySQL documentation because it has much more
> elaborated documentation than the same page for MariaDB.
> 
> I am doing similar INSERT...SELECT query to this
> 
>     INSERT INTO table (value1, value2)
>     SELECT 'stuff for value1', 'stuff for value2' FROM DUAL
>     WHERE NOT EXISTS (SELECT * FROM table
>           WHERE value1='stuff for value1' AND value2='stuff for value2')
>     LIMIT 1
> 
> , where table has auto-genrated id.
> 
> And I would like to know if it was inserted or not, of course. I assume the
> way to do that is to use `mysql_insert_id()`. It returns 0 if no insertions
> happen and 1 if insertions happen. Looking more details [here](
> https://dev.mysql.com/doc/refman/5.7/en/mysql-insert-id.html).

The intended way to do it is to look at mysql_affected_rows().
https://mariadb.com/kb/en/library/mysql_affected_rows/

At least in C API (perhaps in some abtraction layers or connectors for
some languages one can only access mysql_insert_id()?).

Regards,
Sergei
Chief Architect MariaDB
and security@xxxxxxxxxxx