我有以下三个表:
商店表
+----------+------------+
| STORE_ID | STORE_NAME |
+----------+------------+
| 1 | Shop 1 |
| 2 | Shop 2 |
| 3 | Shop 3 |
+----------+------------+
员工表
+--------+------------+----------+---------+
| EMP_NO | MANAGER_NO | EMP_NAME | STORE_ID |
+--------+------------+----------+---------+
| 3465 | 4356 | A Smith | 1 |
| 4356 | | M Jones | 2 |
| 7645 | 4356 | J Adam | 3 |
+--------+------------+----------+---------+
付款表
+------------+------------+-------+--------+----------+
| PAYMENT_ID | DATE | TOTAL | EMP_NO | STORE_ID |
+------------+------------+-------+--------+----------+
| 1 | 01/01/2016 | 20.00 | 7645 | 3 |
| 2 | 10/02/2016 | 10.00 | 3465 | 1 |
| 3 | 15/03/2016 | 5.00 | 3465 | 1 |
| 4 | 25/04/2016 | 50.00 | 7645 | 3 |
| 5 | 30/05/2016 | 35.00 | 7645 | 3 |
+------------+------------+-------+--------+----------+
根据上面的表格,我如何创建显示3个商店中每个商店的销售数据的视图表。
每个表都需要显示以下内容:
我目前已完成以下操作,但完全卡住了。我对SQL很新,过去曾使用过join,但似乎无法解决这个问题。
SELECT s.store_id AS "Store Name",
e1.manager_no AS "Manager Name",
e2.emp_name AS "Salesperson",
SUM(p.total) AS "Sales Value"
FROM store_table s
JOIN
答案 0 :(得分:2)
你可以根据你的情况修改这个例子,但我认为它可能是这样的:
SELECT s.store_id AS "Store Name",
e.manager_no AS "Manager Name",
e.emp_name AS "Salesperson",
SUM(p.total) AS "Sales Value"
FROM store_table s
INNER JOIN employee_table AS e
ON s.STORE_ID = e.STORE_ID
INNER JOIN payment_table AS p
ON s.STORE_ID = p.STORE_ID