Question

Here’s a sample of a table I have:

mysql> select * from table_a where description='Auto';
+----+----------+-------------+-----------------+
| id | idparent | description | description_url |
+----+----------+-------------+-----------------+
| 11 |     NULL | Auto        | NULL            | 
| 74 |       73 | Auto        | NULL            | 
+----+----------+-------------+-----------------+
2 rows in set (0.00 sec)

mysql> 

Now I insert into another table another record and remember its last inserted id:

INSERT INTO table_b (description) values ('Myvalue');
set @lt=LAST_INSERT_ID();

Now I have into @lt the value.
I could do this (and it works):

INSERT INTO table_a_link_b (id_a, id_b) VALUES (11, @lt);
INSERT INTO table_a_link_b (id_a, id_b) VALUES (74, @lt);

Now what follows doesn’t work:

INSERT INTO table_a_link_b (id_a, id_b) VALUES
    ( (SELECT id FROM table_a where description='Auto') , @lt);

So I tried to put it into a variable:

mysql> set @t=(select id from table_a where description='Auto');
ERROR 1242 (21000): Subquery returns more than 1 row

It doesn’t work. Is there a way I could do it without making a Php batch file and stay pure SQL?

Answer 1

INSERT INTO table_a_link_b (id_a, id_b)
SELECT id,@lt FROM table_a where description='Auto';