How to use properly INSERT INTO SELECT? - mysql

Question

I'm trying to insert records from other tables into store_orders_items.
For example:
INSERT INTO store_orders_items( order_id, sel_item_id, sel_item_price)
SELECT order_id, sel_item_id, sel_item_price
FROM orders_ids
INNER JOIN store_orders ON store_orders.id = orders_ids.order_id
INNER JOIN store_shoppertrack ON store_items.id=store_shoppertrack.sel_item_id
Where session_id = '".$_COOKIE["PHPSESSID"]."';
Then I received the following message: Unknown column 'sel_item_price' in 'field list'. I tried to set sel_item_price As item_price to no avail.
Here are my tables:
store_orders_items:
id| order_id | sel_item_id |sel_item_price|
-------------------------------------------
| | | |
store_shoppertrack:
id| session_id | sel_item_id |date_added|
-------------------------------------------
| | | |
store_orders:
id| item_total| order_date|
---------------------------
| | |
store_items:
id| item_price| item_color|
---------------------------
| | |
orders_ids:
id| order_id | status|
----------------------
| | |

Answer 1

There is no table in jour join which has either a column named sel_item_price, nor a column item_price. The INSERT INTO has nothing to do with this, the SELECT on its own will fail just as well. I assume that you wanted to join with the store_items table as well, and select the item_price column from that table for insertion into the sel_item_price table of store_order_items. You could rewrite your SELECT like this:
SELECT order_id, store_shoppertrack.sel_item_id, store_items.item_price AS sel_item_price
FROM orders_ids
INNER JOIN store_orders ON store_orders.id = orders_ids.order_id
INNER JOIN store_items ON store_items.id = store_orders.sel_item_id
INNER JOIN store_shoppertrack ON store_items.id=store_shoppertrack.sel_item_id
Where session_id = 'foo';
The AS sel_item_price is optional, since you already specified the destination column in the INSERT INTO part. But it might help consistency, as the output of the SELECT will now hace volumns labeled the same as those of the target table. And it exhibits that you got the order of the AS wrong in your question, so you might learn something here.
I've created a SQL Fiddle for your schema and query.

Answer 2

The field sel_item_price is only in your store_orders_items table which is not part of your select query. This is the cause of the error you listed.

Answer 3

You need to also join against store_items, and include the column item_price from this table in your SELECT, not store_item_price which only exists in the table you are inserting into

Answer 4

According to this tables the only field sel_item_price is in the table store_orders_items which is the one you are going to insert the data. Thats why you got the error.

Answer 5

Your Query should be, you are using store_items alias but it is not in your join
INSERT INTO store_orders_items( order_id, sel_item_id, sel_item_price)
SELECT order_id, sel_item_id, sel_item_price
FROM orders_ids
INNER JOIN store_orders ON store_orders.id = orders_ids.order_id
INNER JOIN store_order_items
ON store_orders.id = store_order_items.order_id --missing
INNER JOIN store_shoppertrack
ON store_items.id=store_shoppertrack.sel_item_id
Where session_id = '".$_COOKIE["PHPSESSID"]."';