How do I select sum with other table if I have data like below:
Table Member
MemberID Name DateJoin
M0001 John 01/01/2015
M0002 Willy 03/20/2016
M0003 Teddy 02/01/2017
etc....
Table Transaction
MemberID TransDate Total
M0002 02/01/2015 100000
M0002 02/28/2015 222000
M0001 01/01/2016 150000
M0001 01/26/2017 160000
M0002 01/25/2017 160000
M0003 02/01/2017 9000
I want the result as a sum of how many times the member transaction in shop in years 2015-2017
The result I want it's:
MemberID 2015 2016 2017
M0001 0 1 1
M0002 2 0 1
M0003 0 0 1
How many members will appear in Result although don't have transaction too.
If you know the values to always be the same, then one simple (although not necessarily optimized) solution is to wrap your original GROUP BY query in another query (making the original a subquery) and then use the SUM function in the outer query, without a GROUP BY clause.
AVG() SyntaxThe SUM() function returns the total sum of a numeric column.
try dynamic sql .
--load in #temp table
select MemberID , datepart (yyyy ,TransDate ) as TransDate ,COUNT(*)as cnt into #temp from [Transaction]
group by MemberID , datepart (yyyy ,TransDate )
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX);
SET @cols = STUFF((SELECT distinct ',' + QUOTENAME(c.TransDate)
FROM #temp c
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = 'SELECT MemberID, ' + @cols + ' from
(
select MemberID
, cnt
, TransDate
from #temp
) x
pivot
(
max(cnt)
for TransDate in (' + @cols + ')
) p '
execute(@query)
drop #temp -- cleanup of #temp table
CREATE TABLE #Table1
([MemberID] varchar(5), [Name] varchar(5), [DateJoin] datetime)
;
INSERT INTO #Table1
([MemberID], [Name], [DateJoin])
VALUES
('M0001', 'John', '2015-01-01 00:00:00'),
('M0002', 'Willy', '2016-03-20 00:00:00'),
('M0003', 'Teddy', '2017-02-01 00:00:00')
;
CREATE TABLE #Table2
([MemberID] varchar(5), [TransDate] datetime, [Total] int)
;
INSERT INTO #Table2
([MemberID], [TransDate], [Total])
VALUES
('M0002', '2015-02-01 00:00:00', 100000),
('M0002', '2015-02-28 00:00:00', 222000),
('M0001', '2016-01-01 00:00:00', 150000),
('M0001', '2017-01-26 00:00:00', 160000),
('M0002', '2017-01-25 00:00:00', 160000),
('M0003', '2017-02-01 00:00:00', 9000)
;
select MemberID,[2015], [2016], [2017]
from
(
select a.MemberID,a.name,a.DateJoin,year(b.TransDate)[year],b.Total from #Table1 A join
#Table2 B on a.MemberID=b.MemberID
) src
pivot
(
count(total)
for year in ([2015], [2016], [2017])
) piv;
output
MemberID 2015 2016 2017
M0001 0 1 1
M0002 2 0 1
M0003 0 0 1
IN 2000
SELECT MEMBERID, COUNT(CASE WHEN YEAR=2015 THEN YEAR END ) AS [2015],
COUNT(CASE WHEN YEAR=2016 THEN YEAR END ) AS [2016],
COUNT(CASE WHEN YEAR=2017 THEN YEAR END ) AS [2017]
FROM (
SELECT A.MEMBERID,A.NAME,A.DATEJOIN,YEAR(B.TRANSDATE)[YEAR],B.TOTAL FROM #TABLE1 A JOIN
#TABLE2 B ON A.MEMBERID=B.MEMBERID)A
GROUP BY MEMBERID
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