在select语句中有如下查询联接:
select a.item_number, total_quantity, store, factory
from (
select item_number, sum(quantity) as "total_quantity"
from `item_details`
group by item_number
) `a`
left join (
select item_number, sum(quantity) as 'store'
from `item_details` where
我有一张带田野的桌子
TPI
CLICKS
IMPRESSION
CLASSIFY
我要得到3个结果
1st) SUM(CLICKS)/SUM(IMPRESSION) * 100 GROUP BY TPI
2nd) SUM(IMPRESSION) WHERE CLASSIFY = "XYZ" GROUP BY TPI
3rd) SUM(IMPRESSION) WHERE CLASSIFY = "ABC" GROUP BY TPI
期望OP
TPI 1st_data 2nd_data 3rd_data
如果TPI在输出上是唯一的,那么我可以在单个查询中实现这一点吗
我只想将多个输入字符串中的所有负数相加,但我不知道下一步该做什么
a,b,c,d = input().split()
a = float(a)
b = float(b)
c = float(c)
d = float(d)
lis = list(a,b,c,d)
假设我想输入(-30.22,10.5,-2.2,-1.8)。我只想另外使用-30.22、-2.2和-1.8。我该怎么做呢?
我使用的是mongoDB,其中包含以下格式的集合。
{name : x city : AAA , status : active , radius : 1 }
{name : x city : AAA , status : active , radius : 4 }
{name : x city : AAA , status : inactive , radius : 7 }
{name : x city : BBB , status : inactive , radius : 7 }
{name : Y city : AAA , status : active , radius
站点集合字段- _id, name
节点集合字段- _id, siteId, name
设备收集字段- _id, nodeId, name
传感器采集字段- _id, deviceId, name
我是MongoDB的新手,预期结果(没有重复的数据):
[{
"_id": "608aa9bd323489617cfe2081",
"name": "Site One two 3",
"node": [{
"name": "N
我希望将这三个查询的结果分别动态地分为三列。
SELECT SUM(fee_amt) as Total_Fee from FEEDTL where Semester_No='2015SM' AND Registration_No='2015-1234' AND Fee_type='TUITION FEE'
SELECT SUM(fee_amt) as Balance from FEEDTL where Semester_no='2015SM' AND Registration_No='2015-1235' AN