php - sql1 获取名称和 sql2 获取印象，我需要按印象对名称进行排序

Question

你好，我有这个项目，我需要帮助我

$sql1 = "SELECT COUNT(*) as num FROM table1 where column1='1'";

    $total_Results = mysql_fetch_array(mysql_query($sql1));

    $total_Results = $total_Results[num];

    while($row = mysql_fetch_array($sql1))

        {

$sql2="select distinct column1 from table2 where column2='".$row['id']."' and left(date,10) BETWEEN '".$datefrom."' AND '".$dateto."'";

$res=mysql_query($sql2);

}

sql1 获取名称，sql2 获取印象，我需要按印象对名称进行排序

---

名字 |印象降序

---

一个 | 10

乙 | 8

C | 7

---

或

---

名字 |印象升序

---

C | 7

乙 | 8

一个 | 10

---

感谢您的关注

Answer 1

我将添加与您上一个问题几乎相同的答案。您可以在一个连接中完成所有这一切，而不是单独的查询；

SELECT t1.id as name, COUNT(DISTINCT t2.column1) Impressions
FROM table1 t1
LEFT JOIN table2 t2
  ON t1.id=t2.column2
WHERE t1.column1 = 1
  AND LEFT(date,10) BETWEEN '2013-01-01' AND '2013-12-31'
GROUP BY t1.id
ORDER BY Impressions DESC

An SQLfiddle to test with .