Nester inner joins

Question

SELECT order_head.ID col
FROM
order order_head
INNER JOIN customer customer_2 ON order_head.customerID = customer_2.ID
WHERE
order_head.orderDate BETWEEN '12/12/2001'
AND '12/12/2009'
AND order_head.ID <> 0
AND customer_2.LastName = 'smith'
AND order_head.status = 1
INNER JOIN (customer_2 INNER JOIN order_head ON customer_2.ID = order_head.customerID) ON cust_address.ID = customer_2.AddressID )
WHERE cust_address.postcode = 'NW1 9PQ'
Error : Incorrect syntax near the keyword 'INNER'.
The last bit in bold does not work the other stuff works correctly, what I am trying to do that does not work is find orders from customers with last name of smith and post code of 'NW1 9PQ', it is unfortunate that the tables are from a third party and cannot be changed and so I am stuck with the table structure. I am also trying to stick with joins.
I have tested this inner join in isolation and appears to work fine !!!!
Any suggestions or pointers will be most appriciated, thanks in advance....
BM

Answer 1

[email protected] wrote:
Error : Incorrect syntax near the keyword 'INNER'.
The last bit in bold does not work the other stuff works correctly, what I am trying to do that does not work is find orders from customers with last name of smith and post code of 'NW1 9PQ', it is unfortunate that the tables are from a third party and cannot be changed and so I am stuck with the table structure. I am also trying to stick with joins.
I have tested this inner join in isolation and appears to work fine !!!!
Any suggestions or pointers will be most appriciated, thanks in advance....BM,
probably you just need follow the correct syntax described in the previous post and put first the join operators. If you really think you have the need to use nested query, you could use an approach like that:
SELECT order_head.ID col
FROM order order_head
INNER JOIN customer customer_2 ON order_head.customerID = customer_2.ID
INNER JOIN (
select c2.* from customer c2 INNER JOIN order o2 ON c2.ID = o2.customerID
) cust_address ON cust_address.ID = customer_2.AddressID
WHERE order_head.orderDate BETWEEN '12/12/2001'
AND '12/12/2009'
AND order_head.ID <> 0
AND customer_2.LastName = 'smith'
AND order_head.status = 1
AND cust_address.postcode = 'NW1 9PQ'Probably above statement doesn't make sense content-wise but I just wanted to use it for illustrative purposes that you can use nested subqueries like that.
Regards,
Randolf
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