php計算錶行

Question

嘿傢伙，我得到了一個大的數據庫表報告。
我想要的方式，從數額分割到40％和60％的計算，除（pro_tan）我希望他們是100％沒有拆分。

SHORT REPORT table: 
-------------- 
id t_deep t_tanning amount cashier 
----------------------------------------- 
1 deep pro tan  30  1 
2 facial tanning  25  2 
3 deep pro tan  30  1 
4 deep tanning  25  1 

report html result: 

table id cashier(40%) owns(60%) total 
1   12   18   30 
2   10   15   25 
3   12   18   30 
4   10   15   25 

預期結果：

table id cashier  owns  total 
1   0   30   30 
2   10   15   25 
3   0   30   30 
4   10   15   25 

PHP計算拆分爲40％和60％：

$q = $db->query("SELECT cashier, SUM(r_amount) AS amount, SUM(r_amount*0.60) AS totalSixty, SUM(r_amount*0.40) AS totalFourty FROM report 
     LEFT JOIN cashier ON cashier.id_cashier = report.id_cashier 
     WHERE date='$today' GROUP BY id_cashier"); 
// query to search pro tan 
$q1 = $db->query("SELECT cashier, SUM(r_amount) AS amount, SUM(r_amount*0.60) AS totalSixty, SUM(r_amount*0.40) AS totalFourty FROM report 
     LEFT JOIN cashier ON cashier.id_cashier = report.id_cashier 
     WHERE date='$today' AND t_tanning LIKE 'Pro Tan%' GROUP BY id_cashier"); 

$sixtyPercent = number_format($r['totalSixty'],2); 
$fourtyPercent = number_format($r['totalFourty'],2); 

Answer 1

你可以做這樣一個SUM(IF(t_tanning = 'pro tan',amount*0.6, amount))條件求和做1個查詢。