SQL :数据过滤器

Question

我有包含数据的BillItem表。下面是表格

+------------+--------+-----------+-------------+-----------+-------------+
| BillItemId | BillId | PayTypeId | GrossAmount | TaxAmount | TotalAmount |
+------------+--------+-----------+-------------+-----------+-------------+
|        430 |    415 |        56 |       60.00 |      9.90 |       69.90 |
|        431 |    416 |        57 |     3125.00 |    156.25 |     3281.25 |
|        432 |    417 |        57 |     6500.00 |    325.00 |     6825.00 |
|        433 |    418 |        57 |     1750.00 |     87.50 |     1837.50 |
|        434 |    419 |        58 |     2220.00 |    111.00 |     2331.00 |
|        435 |    416 |        58 |     1776.00 |     88.80 |     1864.80 |
|        436 |    420 |        61 |     6000.00 |    300.00 |     6300.00 |
|        437 |    421 |        60 |     5270.00 |    263.50 |     5533.50 |
|        438 |    421 |        61 |     3600.00 |    180.00 |     3780.00 |
+------------+--------+-----------+-------------+-----------+-------------+

但是从BillItem表中我想要如下表所示的结果

+--------+-------+---------+---------+---------+---------+-------------+-----------+-------------+
| BillId |  56   |   57    |   58    |   60    |   61    | GrossAmount | TaxAmount | TotalAmount |
+--------+-------+---------+---------+---------+---------+-------------+-----------+-------------+
|    415 | 60.00 |       0 |       0 |       0 |       0 |       60.00 |      9.90 |       69.90 |
|    416 |     0 | 3125.00 | 1776.00 |       0 |       0 |     4901.00 |    245.05 |     5146.05 |
|    417 |     0 | 6500.00 |       0 |       0 |       0 |     6500.00 |    325.00 |     6825.00 |
|    418 |     0 | 1750.00 |       0 |       0 |       0 |     1750.00 |     87.50 |     1837.50 |
|    419 |     0 |       0 | 2220.00 |       0 |       0 |     2220.00 |    111.00 |     2331.00 |
|    420 |     0 |       0 |       0 |       0 | 6000.00 |     6000.00 |    300.00 |     6300.00 |
|    421 |     0 |       0 |       0 | 5270.00 | 3600.00 |     8870.00 |    443.50 |     9313.50 |
+--------+-------+---------+---------+---------+---------+-------------+-----------+-------------+

如结果表所示，需要数据为BillId及其相关分量之和。我是sql的新手，不知道如何找到这样的结果。请帮帮我。

Answer 1

select * from
(
  BillId,sum(GrossAmount),sum(TaxAmount),sum(TotalAmount),PayTypeId
  from BillItem 
  group by BillId
)
as tablo
pivot
(
  sum(GrossAmount)
  for PayTypeId in ([56],[57],[58],[59],[60],[61])
) as p
order by BillId

Answer 2

我是条件聚合的铁杆粉丝：

select BillId,
       sum(case when PayTypeId = 56 then GrossAmount else 0 end) as grossamount_56,
       sum(case when PayTypeId = 57 then GrossAmount else 0 end) as grossamount_57,
       sum(case when PayTypeId = 58 then GrossAmount else 0 end) as grossamount_58,
       sum(case when PayTypeId = 59 then GrossAmount else 0 end) as grossamount_59,
       sum(case when PayTypeId = 60 then GrossAmount else 0 end) as grossamount_60,
       sum(case when PayTypeId = 61 then GrossAmount else 0 end) as grossamount_1,
       sum(GrossAmount) as grossamount,
       sum(TaxAmount) as taxamount,
       sum(TotalAmount) as totalamount
from BillItem bi
group by BillId;