Mysql查询计算0,4,8,16％的税金

Question

我有查询从数据库中计算零，四，八和十六的税，并在报告中查看它，它可以正常使用小型数据库但是当数据库获得大量记录时，它需要花费太多时间来处理和生成报告，所以我希望你检查一下并尝试解决问题，如果可以的话，提前谢谢。

这是我的查询;

SELECT sales_point.serial,sales_point.date,sales_point.tax,
ROUND(SUM(IFNULL((SELECT SUM(sales_point_transaction.total)
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND 
sales_point_transaction.taxes = 0.0),0)),3) AS taxNo0,
ROUND(SUM(IFNULL((SELECT SUM(sales_point_transaction.total)
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND 
sales_point_transaction.taxes = 0.04),0)),3) AS taxNo4,
ROUND(SUM(IFNULL((SELECT SUM(sales_point_transaction.total)
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND 
sales_point_transaction.taxes = 0.08),0)),3) AS taxNo8,
ROUND(SUM(IFNULL((SELECT SUM(sales_point_transaction.total) 
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND 
sales_point_transaction.taxes = 0.16),0)),3) AS taxNo16,
ROUND(SUM(IFNULL((SELECT SUM(sales_point_transaction.total) 
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND 
sales_point_transaction.taxes = 0.0),0))
+SUM(IFNULL((SELECT SUM(sales_point_transaction.total) 
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND 
sales_point_transaction.taxes = 0.04),0))
+SUM(IFNULL((SELECT SUM(sales_point_transaction.total) 
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND   
sales_point_transaction.taxes = 0.08),0))
+SUM(IFNULL((SELECT SUM(sales_point_transaction.total)
FROM sales_point_transaction
WHERE sales_point_transaction.serial_sales_point = sales_point.serial AND   
sales_point_transaction.taxes = 0.16),0))+ tax,3) AS total
FROM sales_point
WHERE sales_point.date between "2013-08-10"  AND "2014-09-30"
GROUP BY serial

这是解释

+----+--------------------+-------------------------+-------+---------------------+---------+----
|id|select_type| table       | type  | possible_keys  | key    |key_len |ref |rows| Extra    |
+----+--------------------+-------------------------+-------+---------------------+---------+----
|1|PRIMARY      | sales_point | index | PRIMARY,userForeign | PRIMARY |4|NULL|9163| Using where |
|9|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|8|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|7|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|6|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|5|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|4|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|3|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
|2|DEPENDENT SUBQUERY |sales_point_transaction|ALL| NULL|NULL| NULL| NULL|13528| Using where |
+----+--------------------+-------------------------+-------+---------------------+---------+----
9 rows in set (0.00 sec)