php mysql 获取2个表值

Question

现在我想查询数据做最新的获取代码。

现在我有 2 张 table ，

这是 t1。

+--------------+--------------------------+----------------------+
|    id        |  name                    | description          |
+--------------+--------------------------+----------------------+
| 1            | GG                       | GG is good           |
| 2            | ABC DEFG                 | ABC DDDDD            |
| 3            | CCARD                    | Gooooo               |
+--------------+--------------------------+----------------------+

这是t2

+---------+------------+-------------------+------------------+
| id      | kaid       | code              | timestamp        |
+---------+------------+-------------------+------------------+
| 1       | 2          | ZZZZAAAAA         | 123456789        |
| 2       | 2          | AAAZZADWWW        | 123344444        |
| 3       | 1          | ASFASDFFFF        | 123333333        |
| 4       | 2          | HHHHHFDFG         | 123222222        |
| 5       | 1          | ASDASDADDDD       | 123111111        |
+---------+------------+-------------------+------------------+

我希望数据显示如下:

ORDER BY timestamp desc limit 5

+--------+------------+------------------+------------------
| id     | kaid       | name             | time             |
+--------+------------+------------------+------------------+
| 1      | 1          | GG               | 123111111        |
| 2      | 2          | ABC DEFG         | 123222222        |
| 3      | 1          | GG               | 123333333        |
| 4      | 2          | ABC DEFG         | 123344444        |
| 5      | 2          | ABC DEFG         | 123456789        |
+--------+------------+------------------+------------------+

现在我的代码是:

$querylist = mysql_query("SELECT * FROM t1 ORDER BY time desc limit 5");
while($rowlist = mysql_fetch_row($querylist)) {
    $idlist[] = $rowlist['id'];
    $user_list_latest[] = $rowlist;
}

当 t1.id = t2.kaid 时，如何选择 t2.name？

非常感谢!

Answer 1

SELECT t1.*,t2.name FROM t1,t2 where t1.id = t2.kaid  ORDER BY t1.time desc limit 5

你可以这样使用