我有两张桌子
+----------------+ +---------------+
| Fruit_list | | Price_history |
+----------------+ +---------------+
| fruit_id | ----\ | price_id |
| fruit_name | \-------> | fruit_id |
| *others | | date |
+----------------+ | price |
+-------------+---------------+
| fruit_id | fruit_name |
+-------------+---------------+
| 1 | Apple |
| 2 | Guava |
| 3 | Starapple |
| 4 | Pear |
| 5 | Banana |
+-------------+---------------+
+-------------+---------------+----------+----------+
| price_id | fruit_id | date | price |
+-------------+---------------+----------+----------+
| 1 | 2 | 1/25/08 | 1.2 |
| 2 | 3 | 2/25/09 | 1.8 |
| 3 | 4 | 9/17/09 | 2.1 |
| 4 | 2 | 10/16/09 | 0.9 |
| 5 | 4 | 1/03/10 | 2.5 |
| 6 | 4 | 1/05/10 | 2.3 |
我的问题是
如何使用外键或链接在详细信息部分中将这两个表连接到水晶报表中。
报告应该像这样结束
+-------------+-----------+----------+
| fruit_name | date | price |
+-------------+-----------+----------+
| Apple | N/A | N/A |
+------------------------------------+
| Guava | 1/25/08 | 1.2 |
| | 10/16/09 | 0.9 |
+------------------------------------+
| Starapple | 2/25/09 | 1.8 |
+------------------------------------+
| Pear | 9/17/09 | 2.1 |
| | 1/03/10 | 2.5 |
| | 1/05/10 | 2.3 |
+------------------------------------+
| Banana | N/A | N/A |
我不想使用子报告 请帮忙
我希望现在会更清楚
答案 0 :(得分：0)
实现此类要求..您需要链接数据库专家中的表，然后按fruit name分组，然后在详细信息部分中放置必填字段