Question

Hi I want to sum shares by grouped by ATS_MPID, then also by Trades_Last_Updated, and I want to then divide the two (ATSSum / Trades_Last_UpdatesSum). This is what I have so far..thank you

 WITH symboltotals AS (
 SELECT Symbol, SUM(Shares) AS SymTot, Trades_Last_Updated
    FROM ATS AS S
    GROUP BY Trades_Last_Updated, Symbol),
atstotals AS (
SELECT Symbol, ATS_MPID, SUM(Shares) as "ATSTotal" 
FROM ATS AS A
GROUP BY ATS_MPID, Symbol)

SELECT *
FROM symboltotals, atstotals
WHERE symboltotals.Symbol = atstotals.Symbol

Sample Data:

Symbol  ATS_MPID    Shares  Trades_Last_Updated
A       BIDS        317800  9/17/2018
A       CROS        125508  9/17/2018
A       BIDS        124300  9/10/2018
A       CROS        117419  9/10/2018

I'm trying to Get the percent per ATS_MPID for all shares traded. So sum Symbol A for BIDS (9/17 & 9/10), do the same for CROS, then divide those totals by the total shares to see their individual contribution %... i.e.: (Shares of BIDS 9/17 + Shares of BIDS 9/10) / Total Shares

Answer 1

Based on the data and your statement of problem, following query will help

create table yourtable(Symbol varchar(100),  ATS_MPID varchar(100),    Shares bigint, Trades_Last_Updated datetime);
insert into yourtable values
 ('A',  'BIDS',    317800,  '9/17/2018')
,('A',  'CROS',    125508,  '9/17/2018')
,('A',  'BIDS',    124300,  '9/10/2018')
,('A',  'CROS',    117419,  '9/10/2018');


select *,
    percentage=(sum(shares) over (partition by Symbol, ATS_MPID)*100.00)/sum(shares) over (partition by Symbol)
    --,percentagePerLastUpdated=(sum(shares) over (partition by Symbol, ATS_MPID, Trades_Last_Updated)*100.00)/sum(shares) over (partition by Symbol)
from yourtable

also see live demo

Dividing Two Sums From Same Level Query

1 个答案: