Sql 有条件地求和/减去数量
我有两个表（Sql 有条件地求和/减去数量,sql,sql-server-2014,Sql,Sql Server 2014,我有两个表（PS\u BU\u ITEMS\u INV A和PS\u TRANSACTION\u INV B）用于库存项目管理PS_BU_ITEMS_INV A包含一个字段，其中当前am item的现存量A.quaty_ONHAND。表PS\u TRANSACTION\u INV B是一个事务表，列出了PS\u BU\u ITEMS\u INV a表中名为B.QTY\u BASE字段中减少或增加a.QTY\u现存量值的所有事务（装运、消耗等） 存储在B.QTY\u BASE列中的值都是正数，因此
PS\u BU\u ITEMS\u INV APS\u TRANSACTION\u INV BA.quaty_ONHANDPS\u TRANSACTION\u INV BPS\u BU\u ITEMS\u INV aB.QTY\u BASEa.QTY\u现存量B.QTY\u BASEB.TRANSACTION\u GROUPB.QTY\u BASEA.QTY\u现存值中添加或减去
下面是每个表中的示例数据
PS\u BU\u项目库存：
SELECT BUSINESS_UNIT, INV_ITEM_ID, QTY_ONHAND, DT_TIMESTAMP
FROM PS_BU_ITEMS_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
BUSINESS_UNIT INV_ITEM_ID QTY_ONHAND DT_TIMESTAMP
11MMS 1 16.0000 2018-09-11 08:12:46.827
SELECT BUSINESS_UNIT, INV_ITEM_ID, TRANSACTION_DATE,
TRANSACTION_GROUP, QTY_BASE, DT_TIMESTAMP
FROM PS_TRANSACTION_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
ORDER BY DT_TIMESTAMP DESC
结果：
SELECT BUSINESS_UNIT, INV_ITEM_ID, QTY_ONHAND, DT_TIMESTAMP
FROM PS_BU_ITEMS_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
BUSINESS_UNIT INV_ITEM_ID QTY_ONHAND DT_TIMESTAMP
11MMS 1 16.0000 2018-09-11 08:12:46.827
SELECT BUSINESS_UNIT, INV_ITEM_ID, TRANSACTION_DATE,
TRANSACTION_GROUP, QTY_BASE, DT_TIMESTAMP
FROM PS_TRANSACTION_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
ORDER BY DT_TIMESTAMP DESC
PS\U交易\U投资：
SELECT BUSINESS_UNIT, INV_ITEM_ID, QTY_ONHAND, DT_TIMESTAMP
FROM PS_BU_ITEMS_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
BUSINESS_UNIT INV_ITEM_ID QTY_ONHAND DT_TIMESTAMP
11MMS 1 16.0000 2018-09-11 08:12:46.827
SELECT BUSINESS_UNIT, INV_ITEM_ID, TRANSACTION_DATE,
TRANSACTION_GROUP, QTY_BASE, DT_TIMESTAMP
FROM PS_TRANSACTION_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
ORDER BY DT_TIMESTAMP DESC
结果：
SELECT BUSINESS_UNIT, INV_ITEM_ID, QTY_ONHAND, DT_TIMESTAMP
FROM PS_BU_ITEMS_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
BUSINESS_UNIT INV_ITEM_ID QTY_ONHAND DT_TIMESTAMP
11MMS 1 16.0000 2018-09-11 08:12:46.827
SELECT BUSINESS_UNIT, INV_ITEM_ID, TRANSACTION_DATE,
TRANSACTION_GROUP, QTY_BASE, DT_TIMESTAMP
FROM PS_TRANSACTION_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
ORDER BY DT_TIMESTAMP DESC
假设我想确定9月4日的现存量值是多少；我将从PS\u BU\u ITEMS\u INV
表中获取当前QTY\u ONHAND
值（在本例中为16.0，并添加（总和）（从PS\u TRANSACTION\u INV
）与交易组'030'和'036'相关的QTY\u BASE
值（这些是项目消耗）用transaction\u GROUP='020'减去数量
因此，对于2018年9月4日的ON_数量计算，我应该有16+（14+2+2+5+2+1+2+10-24+10+10-24之和）=26
到目前为止，我已经编写了以下查询以SUM
数量（对于今天（当前日期）和硬编码日期（本例中为9/4/18）之间发生的交易的030和036（正）数量），但我很难在或条件IF
语句中添加某种类型的CASE，如果事务组为030或036，则将值相加，如果事务组为020，则减去值。查询目前无法从9中获得正确的手头数量/4/18因为缺少条件减法
SELECT A.INV_ITEM_ID, A.BUSINESS_UNIT, A.QTY_ONHAND, A.DT_TIMESTAMP,
DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0) AS TRANSACTION_DT,
(A.QTY_ONHAND + (SELECT SUM(BB.QTY_BASE)
FROM PS_TRANSACTION_INV BB WHERE BB.TRANSACTION_DATE
BETWEEN '2018-09-04' AND GETDATE() AND BB.INV_ITEM_ID
= '1'
AND BB.BUSINESS_UNIT = '11MMS'
AND BB.BUSINESS_UNIT = B.BUSINESS_UNIT AND BB.INV_ITEM_ID
= B.INV_ITEM_ID)) AS QTY_ONHAND_AS_OF_DT
FROM PS_BU_ITEMS_INV A
LEFT OUTER JOIN PS_TRANSACTION_INV B ON B.BUSINESS_UNIT
= A.BUSINESS_UNIT
AND B.INV_ITEM_ID = A.INV_ITEM_ID
AND DATEADD(MINUTE, DATEDIFF(MINUTE, 0, A.DT_TIMESTAMP), 0) =
DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0)
WHERE B.INV_ITEM_ID = '1'
AND B.BUSINESS_UNIT = '11MMS'
我想做一些这样的事情：
SELECT
A.INV_ITEM_ID, A.BUSINESS_UNIT, A.QTY_ONHAND, A.DT_TIMESTAMP,
DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0) AS TRANSACTION_DT,
(A.QTY_ONHAND + (CASE WHEN B.TRANSACTION_GROUP IN ('030', '036') THEN
SUM(B.QTY_BASE)
WHEN B.TRANSACTION_GROUP = '020' THEN
SUM(-B.QTY_BASE) END AS ON_HANDS_AS_OF_DATE ) )
FROM PS_BU_ITEMS_INV A
LEFT OUTER JOIN PS_TRANSACTION_INV B ON B.BUSINESS_UNIT
= A.BUSINESS_UNIT
AND B.INV_ITEM_ID = A.INV_ITEM_ID
AND DATEADD(MINUTE, DATEDIFF(MINUTE, 0, A.DT_TIMESTAMP), 0) =
DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0)
WHERE B.INV_ITEM_ID = '1'
AND B.BUSINESS_UNIT = '11MMS'
AND B.TRANSACTION_DATE BETWEEN '2018-09-04' AND GETDATE()
但此查询不起作用。欢迎提供任何反馈
编辑：
SELECT BUSINESS_UNIT, INV_ITEM_ID, QTY_ONHAND, DT_TIMESTAMP
FROM PS_BU_ITEMS_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
BUSINESS_UNIT INV_ITEM_ID QTY_ONHAND DT_TIMESTAMP
11MMS 1 16.0000 2018-09-11 08:12:46.827
SELECT BUSINESS_UNIT, INV_ITEM_ID, TRANSACTION_DATE,
TRANSACTION_GROUP, QTY_BASE, DT_TIMESTAMP
FROM PS_TRANSACTION_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
ORDER BY DT_TIMESTAMP DESC
这是我编辑过的SQL，但是它返回的是错误的按手计算的条件值。我甚至在日期范围的
中添加了附加条件，但它仍然没有返回正确的值（26）
编辑2:
SELECT BUSINESS_UNIT, INV_ITEM_ID, QTY_ONHAND, DT_TIMESTAMP
FROM PS_BU_ITEMS_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
BUSINESS_UNIT INV_ITEM_ID QTY_ONHAND DT_TIMESTAMP
11MMS 1 16.0000 2018-09-11 08:12:46.827
SELECT BUSINESS_UNIT, INV_ITEM_ID, TRANSACTION_DATE,
TRANSACTION_GROUP, QTY_BASE, DT_TIMESTAMP
FROM PS_TRANSACTION_INV
WHERE INV_ITEM_ID = '1'
AND BUSINESS_UNIT = '11MMS'
ORDER BY DT_TIMESTAMP DESC
我很好奇为什么这个查询会得到正确的数量计数（26）（为了简化，我硬编码了A.QTY\u的值）
但是下面的查询（使用相同的条件逻辑）得到了不同（不正确）的数量
SELECT
A.INV_ITEM_ID, A.BUSINESS_UNIT, A.QTY_ONHAND, A.DT_TIMESTAMP,
DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0) AS TRANSACTION_DT,
(A.QTY_ONHAND + SUM(CASE WHEN B.TRANSACTION_GROUP IN ('030', '036') --AND B.TRANSACTION_DATE BETWEEN '2018-09-04' AND GETDATE() THEN
THEN B.QTY_BASE
WHEN B.TRANSACTION_GROUP = '020' --AND B.TRANSACTION_DATE BETWEEN '2018-09-04' AND GETDATE()
THEN -B.QTY_BASE END ) )
FROM PS_BU_ITEMS_INV A
LEFT OUTER JOIN PS_TRANSACTION_INV B ON B.BUSINESS_UNIT
= A.BUSINESS_UNIT
AND B.INV_ITEM_ID = A.INV_ITEM_ID
AND DATEADD(MINUTE, DATEDIFF(MINUTE, 0, A.DT_TIMESTAMP), 0) =
DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0)
WHERE B.INV_ITEM_ID = '1'
AND B.BUSINESS_UNIT = '11MMS'
AND B.TRANSACTION_DATE BETWEEN '2018-09-04' AND GETDATE()
GROUP BY A.INV_ITEM_ID, A.BUSINESS_UNIT, A.QTY_ONHAND, A.DT_TIMESTAMP, DATEADD(MINUTE, DATEDIFF(MINUTE, 0, B.DT_TIMESTAMP), 0)
我不会调试您的精确查询。不过，下面您可以看到如何有条件地求和值并将其减去当前值，以便您可以返回时间并找到原始数量：
假设您的数据是：
create table ps_bu_items_inv (
business_unit varchar(20),
inv_item_id int,
qty_onhand decimal(12, 8),
dt_timestamp datetime
);
insert into ps_bu_items_inv (business_unit, inv_item_id, qty_onhand, dt_timestamp)
values ('11MMS', 1, 16.0, '2018-09-11 08:12:46.827');
create table ps_transaction_inv (
business_unit varchar(20),
inv_item_id int,
transaction_date date,
transaction_group varchar(6),
qty_base decimal(12, 8),
dt_timestamp datetime
);
insert into ps_transaction_inv (business_unit, inv_item_id, transaction_date, transaction_group, qty_base, dt_timestamp)
values ('11MMS', 1, '2018-09-11', '036', 14, '2018-09-11 12:34:56');
insert into ps_transaction_inv (business_unit, inv_item_id, transaction_date, transaction_group, qty_base, dt_timestamp)
values ('11MMS', 1, '2018-09-11', '020', 24, '2018-09-11 12:34:56');
insert into ps_transaction_inv (business_unit, inv_item_id, transaction_date, transaction_group, qty_base, dt_timestamp)
values ('11MMS', 1, '2018-09-11', '030', 6, '2018-09-11 12:34:56');
查询应类似于：
select a.*, b.*, (a.qty_onhand - b.change) as original_qty
from ps_bu_items_inv a
join (
select
inv_item_id,
sum( -- here's the conditional sum
case when transaction_group <> '020' then -qty_base else qty_base end
) as change
from ps_transaction_inv
where transaction_date between '2018-09-01' and '2018-09-11'
group by inv_item_id
) b on a.inv_item_id = b.inv_item_id
如您所见，原始数量显示为12
。即当前数量16
减去变化4
。在这种情况下，“变化”计算为：
-14 +24 -6 = +4
使用条件求和：sum（结束时为CASE）
。我认为编辑2的问题在于分组。分组时，您包括了表B中的列，这可能会产生不同的子组。感谢您的反馈。我用我的任务编辑了上面的帖子，但它仍然没有得到正确的计算值。是否考虑我的查询是否需要修改？计算字段（CASE-WHEN）由于某种原因似乎忽略了我在查询中定义的日期条件……是的，它应该忽略WHERE
子句中的任何条件，并将对所选的所有行求和。但是，它将按您想要的方式求和。我再次编辑了文章（编辑上面的2）当我试图理解为什么两个查询产生不同的结果时？