Sql 如何从两个不同的表中计算求和和和减法
我有两个表“tbl_In_Details”和“tbl_Out_Details”,用于tbl_In_DetailsSql 如何从两个不同的表中计算求和和和减法,sql,sql-server,Sql,Sql Server,我有两个表“tbl_In_Details”和“tbl_Out_Details”,用于tbl_In_Details sample data for tbl_In_Details ID Item_Name Rate Quantity Source_company 1 wire 10 4 2020-04-21 22:47:29.083 2 Tea 4 20 2020-04-21
sample data for tbl_In_Details
ID Item_Name Rate Quantity Source_company
1 wire 10 4 2020-04-21 22:47:29.083
2 Tea 4 20 2020-04-21 22:47:52.823
Sample data for tbl_Out_Details
ID Item_Name Quantity Created_Date
1 wire 1 2020-04-21 22:48:48.233
2 wire 2 2020-04-21 22:50:16.367
3 Tea 2 2020-04-21 23:48:39.94
现在我想计算当前库存,即(传入-传出)作为当前库存
我尝试了这种方式,但没有得到正确的记录。请指导我需要修改查询的位置:
Select O.Item_Name,
sum(CAST(I.Quantity AS INT))as Incoming_Quantity ,
SUM(CAST(o.Quantity as int)) as Outgoing_Quantity ,
(sum(CAST(I.Quantity AS INT)) - SUM(CAST(o.Quantity AS INT))) As Current_Stock
from tbl_In_Details I inner join tbl_Out_Details O
ON I.Item_Name = o.Item_Name group by O.Item_Name
我的输出应该是
Item_Name Incoming_Quantity Outgoing_quantity Current_Stock
Wire 4 3 1
Tea 20 2 18
使用
union all
和聚合:
select item_name, sum(in_quantity) as in_quantity, sum(out_quantity) as out_quantity,
sum(in_quantity) - sum(out_quantity) as in_stock
from ((select item_name, quantity as in_quantity, 0 as out_quantity
from incoming
) union all
(select item_name, 0, quantity
from outgoing
)
) io
group by item_name;
其显示的“多部件标识符”o.Quantity“无法绑定。”