PHP選擇形成一個MySQL表和秩序被另一個表

Question

我有我的MySQL數據庫2個表：

• 客戶
• customer_billing

客戶表有列列

• 序列號
• 公司

的* customer_billing *表有列

• 序列
• customer_seq

我對* customer_billing *表運行一個選擇查詢，然後一段時間內在客戶表中循環選擇查詢，如下所示：

$sql="SELECT *, SUM(quantity*unitprice) as customertotal from customer_billing where resellerid = '' and salesmanid = '' and producttype = '".$_GET["producttype"]."' group by customer_seq "; 
    $rs=mysql_query($sql,$conn) or die(mysql_error()); 
    while($result=mysql_fetch_array($rs)) 
    { 
     $sql2="SELECT * from customer where sequence = '".$result["customer_seq"]."' and company_status = '' "; 
     $rs2=mysql_query($sql2,$conn) or die(mysql_error()); 
     $result2=mysql_fetch_array($rs2); 
} 

我希望能夠從客戶表順序company ASC顯示的結果

我已經很明顯這只是訂單嘗試ORDER_BY customer_seq序列號

我也試着這樣做爲了通過company ASC在客戶表查詢，但這沒有工作要麼

我怎麼能得到這個？

Answer 1

您應該在customer_seq上的客戶和customer_billing之間建立連接，並將公司添加到group by子句中。

這樣你應該可以按公司來訂購。

Answer 2

您可以使用Joins，無需使用second query試試這個，

$sql="SELECT c.*,ct.*, SUM(ct.quantity*ct.unitprice) as customertotal FROM 
    customer_billing ct , custom c WHERE ct.resellerid = '' AND ct.salesmanid = '' 
    AND c.company_status = '' AND c.sequence=ct.customer_seq AND 
    ct.producttype = '".$_GET["producttype"]."' 
    GROUP BY ct.customer_seq ORDER BY c.company ASC "; 
$rs=mysql_query($sql,$conn) or die(mysql_error()); 
while($result=mysql_fetch_array($rs)) 
{ 
    // your code 
} 

Answer 3

你需要這樣做使用join單個查詢。應該像這樣運行：

SELECT cb.customer_seq, c.sequence, c.company, SUM(quantity*unitprice) as customertotal 
FROM customer_billing AS cb JOIN customer AS c 
    ON cb.sequence = c.sequence 
WHERE cb.resellerid = '' 
    AND cb.salesmanid = '' 
    AND cb.producttype = '$_GET["producttype"]' 
    AND c.company_status = '' 
GROUP BY cb.customer_seq, c.company 
ORDER BY c.company