MySQL throwing error on second JOIN - mysql

Question

I'm getting the following error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'JOIN product_catalog ON product_catalog.entity_id
As a result of the following query:
SELECT sales_order.created_at , order_item.order_id, sales_order.increment_id, SUM(order_item.qty_ordered) AS qty_ordered , COUNT( * )
FROM order_item
JOIN sales_order
ON sales_order.entity_id = order_item.order_id
WHERE sales_order.created_at > '2012-11-15 00:00:00'
JOIN product_catalog
ON product_catalog.entity_id = order_item.product_id
WHERE product_catalog.size = 14
GROUP BY order_item.order_id;
Variations on this query have worked for grouping different types of product by sales order in the past where I only needed to perform one JOIN to get all the info I needed. The problem I'm encountering is from the second JOIN. Clearly I'm missing something but I really am not sure what. :(

Answer 1

Please make sure that WHERE condition must be after all JOIN
SELECT sales_order.created_at , order_item.order_id, sales_order.increment_id, SUM(order_item.qty_ordered) AS qty_ordered , COUNT( * )
FROM order_item
JOIN sales_order
ON sales_order.entity_id = order_item.order_id
JOIN product_catalog
ON product_catalog.entity_id = order_item.product_id
WHERE product_catalog.size = 14
AND sales_order.created_at > '2012-11-15 00:00:00'
GROUP BY order_item.order_id;
First of all you have to JOIN your tables which you need. Then after WHERE clause come for conditions.

Answer 2

Your WHERE clauses are in the wrong spots. See the code below for proper JOIN syntax.
SELECT sales_order.created_at,
order_item.order_id,
sales_order.increment_id,
SUM(order_item.qty_ordered) AS qty_ordered,
COUNT( * )
FROM order_item
JOIN sales_order
ON sales_order.entity_id = order_item.order_id
AND sales_order.created_at > '2012-11-15 00:00:00'
JOIN product_catalog
ON product_catalog.entity_id = order_item.product_id
AND product_catalog.size = 14
GROUP BY order_item.order_id

Answer 3

JOIN...ON... clause it's also section to input condition so you don't need where clause, just add AND instead.
SELECT sales_order.created_at , order_item.order_id, sales_order.increment_id,
SUM(order_item.qty_ordered) AS qty_ordered , COUNT( * )
FROM order_item
JOIN sales_order ON sales_order.entity_id = order_item.order_id
and sales_order.created_at > '2012-11-15 00:00:00'
JOIN product_catalog ON product_catalog.entity_id = order_item.product_id
and product_catalog.size = 14
GROUP BY order_item.order_id;
Please consider below example I added aliases. It's good practice to use it because code is more readable.
SELECT SO.created_at , OI.order_id, SO.increment_id,
SUM(OI.qty_ordered) AS qty_ordered , COUNT( * )
FROM order_item OI
JOIN sales_order SO ON SO.entity_id = OI.order_id
and SO.created_at > '2012-11-15 00:00:00'
JOIN product_catalog PC ON PC.entity_id = OI.product_id
and PS.size = 14
GROUP BY OI.order_id;