я следующие схемы, purchase_orderзапрос, чтобы получить данные из четырех таблиц
+-------------------+----------------------+
| purchase_order_id | purchase_order |
+-------------------+----------------------+
| 54 | Purchase Order 12345 |
| 56 | po-laptop-hp-3 |
| 57 | po-laptop-hp-1 |
+-------------------+----------------------+
purchase_order_detail
+--------------------------+-------------------+---------+------------------+
| purchase_order_detail_id | purchase_order_id | item_id | ordered_quantity |
+--------------------------+-------------------+---------+------------------+
| 61 | 54 | 279 | 500 |
| 62 | 54 | 286 | 700 |
| 63 | 56 | 279 | 43 |
| 64 | 57 | 279 | 43 |
| 65 | 57 | 286 | 43 |
| 66 | 57 | 287 | 43 |
+--------------------------+-------------------+---------+------------------+
delivery_order
+-------------------+--------------------------+-------------------+
| delivery_order_id | purchase_order_detail_id | recieved_quantity |
+-------------------+--------------------------+-------------------+
| 62 | 61 | 250 |
| 63 | 62 | 300 |
| 64 | 63 | 34 |
| 65 | 64 | 34 |
| 66 | 65 | 34 |
| 67 | 66 | 34 |
| 68 | 61 | 34 |
| 69 | 61 | 34 |
+-------------------+--------------------------+-------------------+
запас
+----------+-------------------+------------+----------+------------------+---------------+
| stock_id | delivery_order_id | project_id | quantity | initial_quantity | stock_type_id |
+----------+-------------------+------------+----------+------------------+---------------+
| 12 | 62 | 1 | 60 | 60 | 1 |
| 13 | 63 | 1 | 120 | 120 | 1 |
| 14 | 63 | 1 | 50 | 50 | 1 |
| 15 | 64 | 1 | 12 | 12 | 1 |
| 16 | 62 | 1 | 120 | 120 | 1 |
| 17 | 62 | 1 | 12 | 12 | 1 |
+----------+-------------------+------------+----------+------------------+---------------+
я должен написать этот запрос, но он возвращает повторяющиеся результаты
SELECT po.created_on
, po.purchase_order
, i.item_name
, u.unit_name
, pod.ordered_quantity
, do.recieved_quantity
, do.recieved_on
, po.remarks
FROM purchase_order po
, purchase_order_detail pod
, delivery_order do
, stock s
, item i
, unit u
WHERE u.unit_id = i.unit_id
AND i.item_id = pod.item_id
AND po.purchase_order_id = pod.purchase_order_id
AND pod.purchase_order_detail_id = do.purchase_order_detail_id
AND do.delivery_order_id = s.delivery_order_id
AND s.project_id = 1
ORDER BY po.purchase_order_id
, pod.item_id
;
В результаты
+---------------------+----------------------+------------+-----------+------------------+-------------------+---------------------+---------------------------------------+
| created_on | purchase_order | item_name | unit_name | ordered_quantity | recieved_quantity | recieved_on | remarks |
+---------------------+----------------------+------------+-----------+------------------+-------------------+---------------------+---------------------------------------+
| 2015-02-24 22:48:15 | Purchase Order 12345 | HP Laptops | Unit | 500 | 250 | 2015-02-21 00:00:00 | Adding first Purchase Order as a Test |
| 2015-02-24 22:48:15 | Purchase Order 12345 | HP Laptops | Unit | 500 | 250 | 2015-02-21 00:00:00 | Adding first Purchase Order as a Test |
| 2015-02-24 22:48:15 | Purchase Order 12345 | Lenovo | Unit | 700 | 300 | 2015-02-21 00:00:00 | Adding first Purchase Order as a Test |
| 2015-02-24 22:48:15 | Purchase Order 12345 | Lenovo | Unit | 700 | 300 | 2015-02-21 00:00:00 | Adding first Purchase Order as a Test |
| 2015-02-24 22:55:40 | po-laptop-hp-3 | HP Laptops | Unit | 43 | 34 | 2015-02-21 00:00:00 | dfgsdfgsd |
+---------------------+----------------------+------------+-----------+------------------+-------------------+---------------------+---------------------------------------+
отношения один ко многим, сверху донизу. То, что я хотел получить, - это каждый заказ на покупку, его упорядоченное количество каждого элемента и общее количество и количество на складе, где project_id = 1 со склада.
я ожидал что-то вроде этого,
+-------------------+---------+------------------+---------------+----------+
| purchase_order_id | item_id | ordered_quantity | totalReceived | quantity |
+-------------------+---------+------------------+---------------+----------+
| 54 | 279 | 500 | 314 | 192 |
| 54 | 286 | 700 | 300 | 170 |
| 56 | 279 | 43 | 34 | 12 |
+-------------------+---------+------------------+---------------+----------+
Каковы ваши ожидаемые результаты из данных образца? – AdamMc331