从另一个表插入MySQL表

Question

Working on a MySQL DB, I have a few hundred (couple thousand) rows I need to enter into a table, where part of the data is coming from a second table.

Basically the senario is:

I have a table which carries values exampled below:

SELECT DISTINCT object_id FROM table1 WHERE reference = 'ABC123';

returns say 3 values: 12345 67890 66699

I need to insert the 3 lines from table1 into table2:

INSERT INTO table2 
(tbl2_unique_id, tbl1_obj_id,object_date) 
VALUES 
(XXXXXX,YYYYYY,NOW());

But...

XXXXXX is an incremental number (I can't make it auto_incremental) starting from '475611' (this just happens to be the last value in table2).

YYYYYY for each line is the '12345',67890','66699'

giving you

table2
---------------------------------
tbl2_unique_id, tbl1_obj_id, object_date
---------------------------------
475611         , 12345,  YYYY-MM-DD HH:MM:SS
475612         , 67890,  YYYY-MM-DD HH:MM:SS
475613         , 66699,  YYYY-MM-DD HH:MM:SS

Any advice?

Cheers in advance

KS

Answer 1

You can use INSERT INTO...SELECT...FROM :

INSERT INTO table2 (tbl1_obj_id,object_date) 
select DISTINCT object_id, NOW()
FROM table1 
WHERE reference = 'ABC123'

You will notice that I excluded the tbl2_unique_id since it is auto increment, you can exclude that since you will not have a value until it is inserted.

Answer 2

Example:

INSERT INTO orders (customer_cust_id, orderdatetime, message, taxrate, shippingprice)
SELECT '1', NOW(), null, taxrate, shippingprice FROM customer
WHERE cust_id='1';

http://dev.mysql.com/doc/refman/5.1/en/insert-select.html