如何回显包含用户ID的数据库中的行？
So I have a database called invoices and I have the user id in there and the date, I would like the user to be able to see all his invoices but not the others. So like my database is setup like
id | userid | amount | date | status
and I want the user to see his own invoices, how would I do that?
所以我有一个名为发票的数据库，我在那里有用户ID和日期，我想要用户 能够看到他的所有发票而不是其他发票。 就像我的数据库设置如 p>
id | userid | 金额| 日期| 状态 p>
我希望用户看到自己的发票，我该怎么做？ p> div>
That can be done with the query:
SELECT * FROM invoices WHERE userid = [the userid of the user];
You can also select specific columns of those rows like:
SELECT amount FROM invoices WHERE userid = [the userid of the user];
If you want more help, you'll have to explain what specifically you need help with!
Hope this helps!
Edit
Oh I see what you mean!
When you create a user (using the INSERT command), you can use RETURNING to ask for information from the rows you just created/populated:
INSERT INTO invoices (userid, amount, date, status) VALUES ([some userid], [some amount], [some date], [some status]) RETURNING id;
This is assuming id is populated by a serial input. You can also ask for any or all of the other rows you just populated. For example:
INSERT INTO invoices (id, userid, amount, date, status) VALUES ([some id],
[some userid], [some amount], [some date], [some status]) RETURNING *;