Update from table A to table B on ORACLE - sql

How to update set QTY = balanceqty
sql
SELECT
balanceid,
balanceqty,
id,
qty
FROM
(
SELECT
lotxlocxid.id balanceid,
SUM(lotxlocxid.qty) balanceqty,
lotxlocxid.status AS balancestatus,
id.id,
id.qty,
id.status
FROM
wmwhse1.lotxlocxid left
JOIN (
SELECT
id.id,
SUM(id.qty) AS qty,
id.status
FROM
wmwhse1.id
GROUP BY
id.id,
id.status
ORDER BY
id.id
) id ON lotxlocxid.id = id.id
WHERE
lotxlocxid.qty > 0
GROUP BY
lotxlocxid.id,
lotxlocxid.status,
id.id,
id.qty,
id.status
ORDER BY
lotxlocxid.id
)
WHERE
balanceqty - qty != '0'
enter image description here


You can use merge statement to update qty column from wmwhse1.id table like below.
merge into wmwhse1.id tgt
using(
SELECT
balanceid,
balanceqty,
id,
qty
FROM
(
SELECT
lotxlocxid.id balanceid,
SUM(lotxlocxid.qty) balanceqty,
lotxlocxid.status AS balancestatus,
id.id,
id.qty,
id.status
FROM
wmwhse1.lotxlocxid left
JOIN (
SELECT
id.id,
SUM(id.qty) AS qty,
id.status
FROM
wmwhse1.id
GROUP BY
id.id,
id.status
ORDER BY
id.id
) id ON lotxlocxid.id = id.id
WHERE
lotxlocxid.qty > 0
GROUP BY
lotxlocxid.id,
lotxlocxid.status,
id.id,
id.qty,
id.status
ORDER BY
lotxlocxid.id
)
WHERE
balanceqty - qty != '0'
)src
on(tgt.id = src.id)
when matched then update set tgt.qty = src.balanceqty
where tgt.qty = src.qty
;

Related

Combine 3 UNIONed queries into one

I have the following which I would like to do without UNIONs so that the string split is only happening once.
I would also like the results to be in one line per MemberId showing all 3 counts rather than 3 rows.
SELECT MemberKey, 'login' as countType, count(MemberKey) as total FROM [dbo].[CA_MembersAudit]
WHERE isSuccess = 1 and MemberKey IN (SELECT value FROM STRING_SPLIT( #userList, ','))
Group By MemberKey
UNION
SELECT MemberId as MemberKey, 'articles' as countType, count(MemberId) as total FROM [dbo].[CA_Activities]
WHERE StateId = 'Opened' and MemberId IN (SELECT value FROM STRING_SPLIT( #userList, ','))
Group By MemberId
UNION
SELECT MemberId as MemberKey,'assessments' as countType, count(MemberId) as total FROM [dbo].[CA_Activities]
WHERE PercentageComplete is not null AND MemberId IN (SELECT value FROM STRING_SPLIT( #userList, ','))
Group By MemberId
UNION
Can anyone suggest how I should amend the queries into one to be able to do this?

You could use a subquery for each total:
select m.MemberKey,
(select count(*) from CA_MembersAudit ma where m.MemberKey = ma.MemberKey and ma.isSuccess = 1) as 'login_total',
(select count(*) from CA_Activities a where m.MemberKey = a.MemberId and a.stateId = 'Opened') as 'articles_total',
(select count(*) from CA_Activities a where m.MemberKey = a.MemberId and a.PercentageComplete is not null) as 'assessments_total'
from (select value as MemberKey from STRING_SPLIT('1,2,3,4', ',')) m
If your tables have a primary key, you could also do something like this:
select m.MemberKey,
count(distinct ma.Id) 'login_total',
count(distinct a1.Id) 'articles_total',
count(distinct a2.Id) 'assessments_total'
from (select value as MemberKey from STRING_SPLIT('1,2,3,4', ',')) m
left outer join CA_MembersAudit ma on m.MemberKey = ma.MemberKey and ma.isSuccess = 1
left outer join CA_Activities a1 on m.MemberKey = a1.MemberId and a1.stateId = 'Opened'
left outer join CA_Activities a2 on m.MemberKey = a2.MemberId and a2.PercentageComplete is not null
group by m.MemberKey

I believe you can use a CTE and then JOIN to each of the UNION participants.
WITH MemberList AS (
SELECT value AS Member
FROM STRING_SPLIT(#userList, ',')
)
SELECT
MemberKey
,'login' AS countType
,count(MemberKey) AS total
FROM [dbo].[CA_MembersAudit]
JOIN MemberList
ON MemberList.Member = CA_MembersAudit.MemberKey
WHERE isSuccess = 1
GROUP BY MemberKey
UNION
SELECT
MemberId AS MemberKey
,'articles' AS countType
,count(MemberId) AS total
FROM [dbo].[CA_Activities]
JOIN MemberList
ON MemberList.Member = CA_Activities.MemberId
WHERE StateId = 'Opened'
GROUP BY MemberId
UNION
SELECT
MemberId AS MemberKey
,'assessments' AS countType
,count(MemberId) AS total
FROM [dbo].[CA_Activities]
JOIN MemberList
ON MemberList.Member = CA_Activities.MemberId
WHERE PercentageComplete IS NOT NULL
GROUP BY MemberId;

try this :
With MemberList as (
SELECT value as ID FROM STRING_SPLIT( #userList, ',')
),
Activities as (
select f1.MemberId, sum(case when f1.StateId = 'Opened' then 1 else 0 end) as TotalOpened,
sum(case when f1.PercentageComplete is not null then 1 else 0 end) as TotalPercentageComplete
FROM [dbo].[CA_Activities] f1 inner join MemberList f2 on f1.MemberId=f2.ID
where f1.StateId = 'Opened' or f1.PercentageComplete is not null
group by f1.MemberId
),
MemberAudit as (
SELECT f1.MemberKey, count(*) as TotalSuccess
FROM [dbo].[CA_MembersAudit] f1 inner join MemberList f2 on f1.MemberKey=f2.ID
WHERE f1.isSuccess = 1
Group By f1.MemberKey
)
select f1.*, isnull(f2.TotalOpened, 0) as TotalOpened, isnull(f2.TotalPercentageComplete, 0) as TotalPercentageComplete, isnull(f3.TotalSuccess, 0) as TotalSuccess
from MemberList f1
left outer join Activities f2 on f1.ID=f2.MemberId
left outer join MemberAudit f3 on f1.ID=f3.MemberKey

other solution :
SELECT f1.value as ID, isnull(f2.TotalOpened, 0) as TotalOpened, isnull(f2.TotalPercentageComplete, 0) as TotalPercentageComplete, isnull(f3.TotalSuccess, 0) as TotalSuccess
FROM STRING_SPLIT( #userList, ',') f1
outer apply
(
select sum(case when f1.StateId = 'Opened' then 1 else 0 end) as TotalOpened,
sum(case when f1.PercentageComplete is not null then 1 else 0 end) as TotalPercentageComplete
FROM [dbo].[CA_Activities] f1
where (f1.StateId = 'Opened' or f1.PercentageComplete is not null) and f1.MemberId=f1.value
) f2
outer apply
(
SELECT count(*) as TotalSuccess FROM [dbo].[CA_MembersAudit] f1 WHERE f1.isSuccess = 1 and f1.MemberKey=f1.value
) f3

Opening and Closing Inventory between Dates in SQL Server

I have four tables
tblDate (Date, Year, Month, Day)
tblItems (ItemID, ItemName)
tblItemReceived (Date, ItemID, Quantity)
tblItemUsed (Date, ItemID, Quantity)
I want report with:
Date, ItemName, Opening Quantity, Received Quantity, Used Quantity, Balance
I cannot get the results in date when no receiving.
Tables
Result
i applied, with different table (original)
select *
FROM (SELECT ivt.ITEMID AS rItemID, ivt.NAMEALIAS as rItemName, iUOM, YearRec, MonthRec, OpeningStock, RecMaterial
FROM INVENTTABLE ivt LEFT JOIN
(SELECT in1.YearRec, in1.MonthRec, in1.rItemID, iUOM, ISNULL(in1.OpeningStock, 0) AS OpeningStock, ISNULL(in1.ReceivedMaterial,0) AS RecMaterial
FROM (SELECT Year(ReceivedDate) AS YearRec, Month(ReceivedDate) AS MonthRec, rItemID, iUOM, MIN(OpenQty) AS OpeningStock, SUM(RecQty) ReceivedMaterial
FROM ( SELECT rItemID, ReceivedDate, iUOM, SUM(ReceivedQty) AS RecQty, (SELECT SUM(q.QTY) FROM VENDPACKINGSLIPTRANS q WHERE q.INVENTDATE < rm.ReceivedDate AND q.ITEMID = rm.rItemID) AS OpenQty
FROM ( SELECT vp.ITEMID AS rItemID, vp.INVENTDATE as ReceivedDate, vp.PURCHUNIT as iUOM, SUM(vp.QTY) as ReceivedQty FROM VENDPACKINGSLIPTRANS AS vp GROUP BY vp.ITEMID, vp.INVENTDATE,vp.PURCHUNIT) rm
GROUP BY rItemID, ReceivedDate,iUOM) inv
GROUP BY Year(ReceivedDate), Month(ReceivedDate), rItemID, iUOM) in1 WHERE (in1.YearRec= 2016 AND in1.MonthRec = 06)
) iv2
ON ivt.ITEMID = iv2.rITemID) le
LEFT JOIN
(SELECT c1.YearConsume, c1.MonthConsume, c1.cItemID, c1.BOM_Unit, MIN(c1.BOM_Consumption_Prev) as PrevConsump, SUM(c1.BOM_ConsumptionQty_Curr) AS TotalConsump
FROM ( SELECT Year(DateConsume) AS YearConsume, Month(DateConsume) AS MonthConsume, ItemID as cITemID, BOM_Unit, ISNULL(BOM_Consumption_Open,0) AS BOM_Consumption_Prev, SUM(BOM_ConsumptionQty) AS BOM_ConsumptionQty_Curr
FROM ( SELECT DateConsume, ItemID, BOM_Unit, SUM(BOM_Consumption) AS BOM_ConsumptionQty,
( SELECT SUM(bc.BOM_Consumption) FROM (SELECT (b.TRANSDATE) AS DateConsume, b.ITEMID AS cItemID, b.BOMUNITID BOM_Unit, SUM(b.BOMCONSUMP) AS BOM_Consumption FROM PRODJOURNALBOM b GROUP BY b.TRANSDATE, b.ITEMID, b.BOMUNITID) bc
WHERE (bc.DateConsume < aa.DateConsume) AND bc.cItemID = aa.ItemID) AS BOM_Consumption_Open
FROM (SELECT (b.TRANSDATE) AS DateConsume, b.ITEMID AS ItemID, b.BOMUNITID BOM_Unit, SUM(b.BOMCONSUMP) AS BOM_Consumption FROM PRODJOURNALBOM b GROUP BY b.TRANSDATE, b.ITEMID, b.BOMUNITID) aa
GROUP BY DateConsume, ItemID, BOM_Unit) cc
GROUP BY Year(DateConsume), Month(DateConsume), ItemID,BOM_Unit, BOM_Consumption_Open) c1
WHERE (YearConsume= 2016 AND MonthConsume = 06)
GROUP BY c1.YearConsume, c1.MonthConsume, c1.cItemID, c1.BOM_Unit) rt
ON le.rItemID = rt.cITemID
WHERE le.rITEMID IN ('FML-RM006', 'FML-RM008','FML-RM016','FML-RM018')

How do I group by the most recent date?

I have a HISTORY table that has multiple rows for the same record and I am trying to get the latest (closest to today's date) record. I am attempting to group by the closest date but am having a difficult time. Please check out the query below and advise me.
SELECT DISTINCT *
FROM
(SELECT etc.Complaint.Complaint_ID AS Complaint_ID
FROM etc.Complaint) AS Qry1
LEFT JOIN
(SELECT etc.Complaint.Complaint_ID AS Complaint_ID,
o.Action_User AS Resolved_User,
o.Action_Date AS LastActionDate
FROM etc.Complaint
LEFT OUTER JOIN etc.History as o
ON SUBSTRING(Primary_Key,15,LEN(Primary_Key) - 15) = etc.Complaint.Complaint_ID
AND TABLE_NAME = 'Resolution' AND o.Field_Name = 'Resolved_Ind'
AND New_Value = 1) AS Qry2
ON Qry1.Complaint_ID = Qry2.Complaint_ID
ORDER BY Qry1.Complaint_ID, MAX(Qry2.LastActionDate)

does this change help?
SELECT DISTINCT *
FROM
(SELECT etc.Complaint.Complaint_ID AS Complaint_ID FROM etc.Complaint) AS Qry1
LEFT JOIN
(SELECT etc.Complaint.Complaint_ID AS Complaint_ID,
o.Action_User AS Resolved_User,
o.Action_Date AS LastActionDate
FROM etc.Complaint
LEFT OUTER JOIN
(
SELECT SUBSTRING(Primary_Key,15,LEN(Primary_Key) - 15) as hist_Complaint_ID , MAX(Action_Date) as Action_Date
FROM etc.History
WHERE Field_Name = 'Resolved_Ind'
GROUP BY SUBSTRING(Primary_Key,15,LEN(Primary_Key) - 15)
) as o
ON o.hist_Complaint_ID = etc.Complaint.Complaint_ID
AND TABLE_NAME = 'Resolution' AND o.Field_Name = 'Resolved_Ind'
AND New_Value = 1) AS Qry2
ON Qry1.Complaint_ID = Qry2.Complaint_ID
ORDER BY Qry1.Complaint_ID, Qry2.LastActionDate

You can use ROW_NUMBER and a CTE to get it:
WITH cte AS (
SELECT etc.Complaint.Complaint_ID AS Complaint_ID,
o.Action_User AS Resolved_User,
o.Action_Date AS LastActionDate
row_number() over (partition by etc.Complaint.Complaint_ID order by o.Action_Date desc) AS rn
FROM etc.Complaint
LEFT OUTER JOIN etc.History as o
ON SUBSTRING(Primary_Key,15,LEN(Primary_Key) - 15) = etc.Complaint.Complaint_ID
AND TABLE_NAME = 'Resolution' AND o.Field_Name = 'Resolved_Ind'
AND New_Value = 1
)
SELECT * FROM cte
WHERE rn = 1

How to get only one value when you are getting multiple values against key in SQL

I have a SQL query. Below is the query
select
ID,
replace(replace(replace(replace([Name],',',''),'"',''),':',''),'?','') [Name] ,
replace(replace([Description],',',''),'"','') [Description],
[GUID],
Bussinesskey
from course
where COURSESTATUS = 'Published' and RETIREDTF = 0
and
bussinesskey in
(
...
)
and id in (
select c.id from course c
inner join COURSE_CUSTOMERENTITLEMENT cce on cce.COURSE_ID = c.ID
inner join CUSTOMERENTITLEMENT ce on ce.id = cce.CUSTOMERENTITLEMENT_ID
where
ce.ENROLLMENTTYPE = 'Course'
and ce.customer_id = 23753
and c.COURSESTATUS = 'Published' and c.RETIREDTF = 0
UNION
select c.id from course c
inner join COURSE_COURSEGROUP cg on cg.course_id = c.id
inner join COURSEGROUP_CUSTOMERENTITLEMENT cgce on cgce.COURSEGROUP_ID = cg.COURSEGROUP_ID
inner join CUSTOMERENTITLEMENT ce on ce.id = cgce.CUSTOMERENTITLEMENT_ID
where
ce.ENROLLMENTTYPE = 'CourseGroup'
and ce.customer_id = 23753
and c.COURSESTATUS = 'Published' and c.RETIREDTF = 0
)
order by name, id asc
When this query runs then I get the output like the following snapshot
You can see in the screen shot that I am getting 8 names of same type(Contracts). The last id of Contracts is 780697 which is the latest record that is added to database. Now i want that when my query runs then it gets only the latest record. Means instead of showing 8 name of Contarcts. Its only the show the latest one for each course name. Means for Contracts only record with ID 780697 is shown. If other courses has the same result then there latest Id record is shown only. How can I achieve this ?
Thanks

You can try following for achieving latest ID:-
select MAX(ID),
replace(replace(replace(replace([Name],',',''),'"',''),':',''),'?','') [Name] ,
replace(replace([Description],',',''),'"','') [Description],
[GUID],
Bussinesskey
from course
where COURSESTATUS = 'Published' and RETIREDTF = 0
and
bussinesskey in
(
...
)
and id in (
select c.id from course c
inner join COURSE_CUSTOMERENTITLEMENT cce on cce.COURSE_ID = c.ID
inner join CUSTOMERENTITLEMENT ce on ce.id = cce.CUSTOMERENTITLEMENT_ID
where
ce.ENROLLMENTTYPE = 'Course'
and ce.customer_id = 23753
and c.COURSESTATUS = 'Published' and c.RETIREDTF = 0
UNION
select c.id from course c
inner join COURSE_COURSEGROUP cg on cg.course_id = c.id
inner join COURSEGROUP_CUSTOMERENTITLEMENT cgce on cgce.COURSEGROUP_ID = cg.COURSEGROUP_ID
inner join CUSTOMERENTITLEMENT ce on ce.id = cgce.CUSTOMERENTITLEMENT_ID
where
ce.ENROLLMENTTYPE = 'CourseGroup'
and ce.customer_id = 23753
and c.COURSESTATUS = 'Published' and c.RETIREDTF = 0
)
group by [Name], [Description], [GUID], Bussinesskey
order by name, id asc

Here how I did this. I don't know how efficient this is but it's giving me what I am exactly wanting
select ID, [Name], [Description], [GUID], Bussinesskey from (
select row_number() over (partition by [Name] order by id desc) as row, t1.* from (
select
ID,
replace(replace(replace(replace([Name],',',''),'"',''),':',''),'?','') [Name] ,
replace(replace([Description],',',''),'"','') [Description],
[GUID],
Bussinesskey
from course
where COURSESTATUS = 'Published' and RETIREDTF = 0
and bussinesskey in (
'PSTOAS0314001',
...
'RECEAL0510019'
)
and id in (
select c.id from course c
inner join COURSE_CUSTOMERENTITLEMENT cce on cce.COURSE_ID = c.ID
inner join CUSTOMERENTITLEMENT ce on ce.id = cce.CUSTOMERENTITLEMENT_ID
where ce.ENROLLMENTTYPE = 'Course'
and ce.customer_id = 23753
and c.COURSESTATUS = 'Published' and c.RETIREDTF = 0
UNION
select c.id from course c
inner join COURSE_COURSEGROUP cg on cg.course_id = c.id
inner join COURSEGROUP_CUSTOMERENTITLEMENT cgce on cgce.COURSEGROUP_ID = cg.COURSEGROUP_ID
inner join CUSTOMERENTITLEMENT ce on ce.id = cgce.CUSTOMERENTITLEMENT_ID
where ce.ENROLLMENTTYPE = 'CourseGroup'
and ce.customer_id = 23753
and c.COURSESTATUS = 'Published' and c.RETIREDTF = 0
)
)t1
) t
where t.row=1
order by t.name, t.id asc
Thanks

;with Course as
(
Select 50000 ID, 'Contracts' Name, '<BLURB>' [Description], '<GUID>' GUID, 'ARB1' BusinessKey
UNION
Select 60000 ID, 'Contracts' Name, '<BLURB>' [Description], '<GUID>' GUID, 'ARB2' BusinessKey
UNION
Select 70000 ID, 'Contracts' Name, '<BLURB>' [Description], '<GUID>' GUID, 'ARB3' BusinessKey
UNION
Select 80000 ID, 'Contracts' Name, '<BLURB>' [Description], '<GUID>' GUID, 'ARB4' BusinessKey
UNION
Select 90000 ID, 'Contracts' Name, '<BLURB>' [Description], '<GUID>' GUID, 'ARB5' BusinessKey
UNION
Select 40000 ID, 'NOT Contracts' Name, '<BLURB>' [Description], '<GUID>' GUID, 'ARB1' BusinessKey
),
Course_Group AS
(
Select 50000 Course_ID, 1 COURSEGROUP_ID
UNION
Select 60000 Course_ID, 1 COURSEGROUP_ID
UNION
Select 70000 Course_ID, 1 COURSEGROUP_ID
UNION
Select 80000 Course_ID, 1 COURSEGROUP_ID
UNION
Select 90000 Course_ID, 2 COURSEGROUP_ID
UNION
Select 40000 Course_ID, 1 COURSEGROUP_ID
),
CourseGroup_CustomerEntitlement AS
(
Select 1 COURSEGROUP_ID, 1 CUSTOMERENTITLEMENT_ID
--UNION
--Select 2 COURSEGROUP_ID, 2 CUSTOMERENTITLEMENT_ID
--UNION
--Select 2 COURSEGROUP_ID, 4 CUSTOMERENTITLEMENT_ID
),
Course_CustomerEntitlement AS
(
Select 50000 Course_ID, 3 CUSTOMERENTITLEMENT_ID
UNION
Select 60000 Course_ID, 3 CUSTOMERENTITLEMENT_ID
UNION
Select 90000 Course_ID, 3 CUSTOMERENTITLEMENT_ID
UNION
Select 40000 Course_ID, 4 CUSTOMERENTITLEMENT_ID
),
CustomerEntitlement AS
(
Select 1 ID, 23753 Customer_ID, 'CourseGroup' ENROLLMENTTYPE
UNION
Select 2 ID, 7 Customer_ID, 'NOT COURSE GROUP' ENROLLMENTTYPE
UNION
Select 3 ID, 23753 Customer_ID, 'Course' ENROLLMENTTYPE
UNION
Select 4 ID, 7 Customer_ID, 'NOT COURSE' ENROLLMENTTYPE
),
CTE_base_data as (
SELECT
C.ID,
replace(replace(replace(replace(C.[Name],',',''),'"',''),':',''),'?','') [Name] ,
replace(replace(C.[Description],',',''),'"','') [Description],
C.[GUID],
C.Businesskey
FROM Course C
JOIN Course_Group CG ON CG.Course_ID = C.ID
JOIN CourseGroup_CustomerEntitlement CG_CE ON CG_CE.COURSEGROUP_ID = CG.COURSEGROUP_ID
JOIN CustomerEntitlement CE_GROUP ON CE_GROUP.ID = CG_CE.CUSTOMERENTITLEMENT_ID
AND CE_GROUP.ENROLLMENTTYPE = 'CourseGroup'
WHERE
CE_GROUP.Customer_ID = 23753
UNION
SELECT
C.ID,
replace(replace(replace(replace([Name],',',''),'"',''),':',''),'?','') [Name] ,
replace(replace([Description],',',''),'"','') [Description],
[GUID],
Businesskey
FROM Course c
JOIN Course_CustomerEntitlement CCE ON CCE.Course_ID = C.ID
JOIN CustomerEntitlement CE_COURSE ON CE_COURSE.ID = CCE.CUSTOMERENTITLEMENT_ID
AND CE_COURSE.ENROLLMENTTYPE = 'COURSE'
WHERE
CE_COURSE.Customer_ID = 23753
--and COURSESTATUS = 'Published'
--and RETIREDTF = 0
--and businesskey in
-- (
-- ...
-- )
),
CTE_max_data as (
Select name, max(ID) ID
from CTE_base_data
group by name
)
Select Data.*
from CTE_base_data Data
JOIN CTE_max_data Filter
ON Data.ID = Filter.ID
AND Data.Name = Filter.Name
order by name, id asc
This yields:
ID Name Description GUID Businesskey
90000 Contracts ARB5
40000 NOT Contracts ARB1
Please advise where my data assumptions fall flat.

SQL query select record with Max

I have these records below :
CustomerID | Name | Store | Quantity
1 | Elie | HO | 16
1 | Elie | S1 | 4
I would like to filter customers by taking only their max quantity?
I tried it with Max, but the problem I cannot render all the fields with it. If I add main.store in the first line, the second row shows.
Is there any solution?
Select main.CUSTOMER_ID, main.Name
from
(
Select Name = cus.FIRST_NAME + ' ' + cus.LAST_NAME,
Store = cs.NAME
,Transaction_Number = count(ts.TRANSACTION_SUMMARY_ID)
,cus.CUSTOMER_ID
from TRANSACTION_SUMMARY ts
inner join dbo.CUSTOMER cus
on ts.CUSTOMER_ID = cus.CUSTOMER_ID
inner join dbo.CORPORATE_STORE cs
on ts.CORPORATE_STORE_ID = cs.CORPORATE_STORE_ID
Group by cus.CUSTOMER_ID
,cus.FIRST_NAME
,cus.LAST_NAME
,cs.Name
) as main
Group by CUSTOMER_ID
,main.Name
order by main.CUSTOMER_ID

This is a good use of window functions:
with t as (
Select Name = cus.FIRST_NAME + ' ' + cus.LAST_NAME,
Store = cs.NAME,
Transaction_Number = count(ts.TRANSACTION_SUMMARY_ID) , cus.CUSTOMER_ID
from TRANSACTION_SUMMARY ts
inner join dbo.CUSTOMER cus on ts.CUSTOMER_ID = cus.CUSTOMER_ID
inner join dbo.CORPORATE_STORE cs on ts.CORPORATE_STORE_ID = cs.CORPORATE_STORE_ID
Group by cus.CUSTOMER_ID, cus.FIRST_NAME, cus.LAST_NAME, cs.Name
)
select name, store, Transaction_Number, CUSTOMER_ID
from (select t.*,
row_number() over (partition by customer_id order by transaction_number desc) as seqnum
from t
) t
where seqnum = 1;
You can actually dispense with the subquery. However, using window functions with aggregations looks funny at first:
with t as (
Select Name = cus.FIRST_NAME + ' ' + cus.LAST_NAME,
Store = cs.NAME,
Transaction_Number = count(ts.TRANSACTION_SUMMARY_ID) , cus.CUSTOMER_ID,
row_number() over (partition by cus.CUSTOMER_ID
order by count(ts.TRANSACTION_SUMMARY_ID) desc
) as seqnum
from TRANSACTION_SUMMARY ts
inner join dbo.CUSTOMER cus on ts.CUSTOMER_ID = cus.CUSTOMER_ID
inner join dbo.CORPORATE_STORE cs on ts.CORPORATE_STORE_ID = cs.CORPORATE_STORE_ID
Group by cus.CUSTOMER_ID, cus.FIRST_NAME, cus.LAST_NAME, cs.Name
)
select name, store, Transaction_Number, CUSTOMER_ID
from t
where seqnum = 1;

Please try:
select * From tbl a
where a.Quantity=
(select MAX(b.Quantity) from tbl b where a.CustomerID=b.CustomerID)

what you want is
select customer_id, max( quantity )
from main
group by customer_id
then you can use this to join to itself if you want
select *
from main
, (
select customer_id, max( quantity ) qty
from main
group by customer_id
) m
where main.customer_id = m.customer_id
and main.quantity = m.qty

Obviously, name has no business being in this table, but you included it, so I did too...
SELECT x.*
FROM my_table x
JOIN
( SELECT customerid
, name
, MAX(quantity) max_quantity
FROM my_table
GROUP
BY customerid
, name
) y
ON y.customerid = x.customerid
AND y.name = x.name
AND y.max_quantity = x.quantity;