[英]How can I get the price to depend on id using MySQL
我將price
和quantity
的總和相乘得到總數。 當我從不同的表中將兩列相乘時出現的問題是我得到了錯誤的結果。 價格與第一行10
的sup_med_id
不匹配。 如何獲得價格取決於sup_med_id
?
sup_med_id price sup_id rec_order_dtls sup_med_id rec_quantity
1 10.00 2 1 1 200
2 12.00 2 2 2 100
date_id date
1 2019-01-01
2 2019-01-02
... ...
輸出量
Month Quantity Total Supplier
...
Jul 0 0 NULL
Aug 300 3000 Unilever
我沒有將所有數據和表格放在上面。 我希望這是下面的結果。
預期產量
Month Quantity Total Supplier
...
Jul 0 0 NULL
Aug 300 3200 Unilever
SELECT DATE_FORMAT(tbl_date.date, '%b')
AS Month,
COUNT(tbl_purchase_received_details.purchase_received_id)
AS Total_Order,
SUM(IFNULL(tbl_purchase_received_details.received_quantity,0))
AS Quantity,
IFNULL((tbl_supplier_medicine.price) *
SUM(tbl_purchase_received_details.received_quantity),0)
AS Total_Amount,
tbl_supplier.supplier_name
AS Supplier FROM tbl_date
LEFT JOIN
tbl_purchase_received ON tbl_purchase_received.date_received = tbl_date.date
LEFT JOIN
tbl_purchase_received_details ON tbl_purchase_received.purchase_received_id
= tbl_purchase_received_details.purchase_received_id
LEFT JOIN
tbl_supplier_medicine ON tbl_supplier_medicine.supplier_medicine_id =
tbl_purchase_received_details.supplier_medicine_id
LEFT JOIN tbl_supplier ON tbl_supplier.supplier_id =
tbl_supplier_medicine.supplier_id
WHERE YEAR(tbl_date.date) = YEAR(NOW())
GROUP BY DATE_FORMAT(tbl_date.date, '%b')
ORDER BY tbl_date.date
您好如果我正確理解您的問題,那么您需要將數量和價格相乘才能得出總數。 如果正確,則可以使用以下查詢:
select tt.rec_quantity as quantity, (price * rec_quantity) as total from temp t inner join temp2 tt on t.sup_med_id=tt.sup_med_id;
如果其中一個表中沒有匹配數據,則可以使用左連接 。 讓我知道您是否需要幫助。
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