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来自多个表的 SQL 查询

转载 作者:行者123 更新时间:2023-12-04 05:17:53 25 4
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我是 SQL 新手,我需要一些帮助,

我想找出姓氏的确认(确认=1)预订日期Steven
有人可以帮助解决此 SQL 查询吗

table_member

+-----------+-----------+
|Member_id | last_name |
+-----------+-----------+
| 1 | David |
| 2 | owen |
| 3 | Tom |
| 4 | Steven |
| 5 | Steven |
| 6 | Steven |
| 7 | Steven |
| 8 | Steven |
| 9 | Steven |
+-----------+-----------+

table_resevation
+-----------+-----------+-----------+-----------+
|resvationID|Member_id | day | month |
+-----------+-----------+-----------+-----------+
| 1 | 1 | 1 | 6 |
| 2 | 1 | 2 | 6 |
| 3 | 2 | 1 | 6 |
| 4 | 4 | 1 | 6 |
| 5 | 4 | 2 | 6 |
| 6 | 5 | 1 | 6 |
| 7 | 5 | 2 | 6 |
| 8 | 7 | 3 | 6 |
+-----------+-----------+-----------+-----------+

确认
+-----------+-----------+-----------+
|confirmID |resvationID| confirmed |
+-----------+-----------+-----------+
| 1 | 1 | 1 |
| 2 | 2 | 1 |
| 3 | 3 | 0 |
| 4 | 4 | 0 |
| 5 | 5 | 1 |
| 6 | 6 | 1 |
| 7 | 7 | 0 |
| 8 | 8 | 1 |
+-----------+-----------+-----------+

最佳答案

像这样的事情对你有用吗?

 SELECT
m.Member_ID, m.Last_Name,
r.Day, r.Month,
c.ConfirmID
FROM
table_member m
INNER JOIN
table_reservation r ON r.Member_ID = m.Member_ID
INNER JOIN
Confirm c ON c.resvationID = r.resvationID
WHERE
m.Last_Name = 'Steven' AND c.confirmed = 1

关于来自多个表的 SQL 查询,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14005259/

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