How To Retrieve Only The Duplicates In A Table

Jul 20, 2005

There is a table with a single column with 75 rows - 50 unique / 25
duplicates. How would pull back a list of the rows that have/are
duplicates?

This is a question that I got in an interview. I didn't get it,
obviously....

Thanks,

Tim

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Transact SQL :: Inserting Records Into Table 2 From Table 1 To Avoid Duplicates

Nov 2, 2015

INSERT
INTO [Table2Distinct]        
([CLAIM_NUMBER]        
,[ACCIDENT_DATE]

[code]....

I used the above query and it still inserts all the duplicate records. What is wrong with my statement?

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T-SQL (SS2K8) :: Rank Duplicates But Only Rows Involved In Duplicates?

Oct 22, 2014

I have a table with 22 million Business records. I can see that there are duplicates when I group by BusinessName and Address and Phone. I'd like to place only the duplicates into a table, with a ranking, oldest business key gets a ranking of 1.

As a bonus I'd like each group to have a distinct group name (although not necessary, just want to know how to do this)

Later after I run more verifications to make sure these are not referenced elsewhere I'll delete everything with a matchRank > 1 out of the main Business table.

DROP TABLE [dbo].[TestBusiness];
GO
CREATE TABLE [dbo].[TestBusiness](
[Business_pk] INT IDENTITY(1,1) NOT NULL,
[BusinessName] VARCHAR (200) NOT NULL,
[Address] VARCHAR(MAX) NOT NULL,

[code]....

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How Do I Find Duplicates In A Table.

Apr 15, 2008

Hi,
 I have table which stores the fund name and its data. We get quarterly information from the fund co. Suppose if the user wants to add a fund thats not in our database we let then add a ClientFundId and a FundName. But may be after sometime the fund company may add that fund in the next quarter.. So how do i get rid of Duplicated Data..
In the ClientFundId column we can a 9 letter Aplhanumeric or a 5 letter character but if the fund co.. provides those values the 5 letter characters are stored in Ticker column and the 9 letter words are stored in Cusip column.. So i just wrote this query hoping i could retrieve the duplicate values but it didnt list any..but i found one this is my query..
 Select
FundId,
Cusip,
Ticker,
ClientFundId,
FundName,
ShortName
From Fund
Where

ClientFundId = Ticker
or
ClientFundId = Cusip
 Any help will appreciated
Thanks
Karen

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Killing The Duplicates From A Table Using Sql

Mar 24, 2004

hi, what is a good way to kill the duplicates from a table. when i say killing duplicated, i mean killing all the rows for the repeated row.

WorkTempID ItemNo Seq
100196 RTP-22 1
100197 RTP-22 2
100198 RTP-22 3
100199 RTP-22 3
100200 RTP-22 4
100201 RTP-22 4
100202 RTP-22 5
100203 RTP-22 5

********************************************************
see how Seq 3, 4 and 5 are repeated? so for the output i want.

WorkTempID ItemNoSeq
100196RTP-221
100197RTP-222
********************************************************

i DO NOT want this as the output. i already know how to achive this using DISTINCT keyword

WorkTempID ItemNoSeq
100196RTP-221
100197RTP-222
100198RTP-223
100200RTP-224
100203RTP-225

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How Do I Find The Duplicates In A Table

Dec 11, 1999

does someone have a querry to display the duplicate records in a table.

Table:
zipcode dma

My data upload is failing because there is a primary key on zipcode and the source data (42k records) has about 50 duplicate zipcode records in it. It is possible that there is a unique combo of zipcode / dma but I need to identify the duplicate records to determine that.

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SQL FIND DUPLICATES IN TABLE

May 28, 2008

I have this script bellow which does what it is supposed to. However it only outputs the cust_id. I want it to show all the columns in the table. How would I do this?



SELECT cust_id
FROM cust_table
WHERE cust_name in ('Billy','John') and rownum < 100
GROUP BY cust_id
HAVING COUNT(*) > 1;

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Removing Duplicates In The Table

Mar 21, 2014

The database has Name,Email, and skill. Though the name is distinct it is repeated as it has different skills. I would like to remove duplicate names and add the corresponding skill to the only one row.

From the stored procedure, combining 3 tables I got the output as:

NameemaildepartmentSkill
ArunemailidTech teamTechnical
ArunemailidTech teamLeadership
ArunemailidTech teamDecision Making
BinayemailidMarketingTechnical
BinayemailidMarketingDecision Making

I would like to remove the duplicate Name fields and combine the Skill in a single row as other fields are same.

So the output should be

NameemaildepartmentSkill
ArunemailidTech teamTechnical, Leadership, Decision Making
BinayemailidMarketingTechnical,Decision Making

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Checking For Duplicates In A Table

Aug 6, 2014

how i can check for duplicate entries for example if a serial number has already been inputted and a user tries to input the same serial number.. how can i get a trigger or some sort to check for duplicates and then prompt that the number has already been entered.

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Duplicates In Table Field

Aug 7, 2014

Im trying to look for duplicates in a table field.. field name is alphanumericCol and table is a user defined table...This is my trigger:

ALTER TRIGGER [dbo].[DUPLICATES]
ON [dbo].[AMGR_User_Fields_Tbl]

FOR INSERT, UPDATE
AS
DECLARE @Alphanumericcol VARCHAR (750)

-- This trigger has been created to check that duplicate rows are not inserted into table.

-- Check if row exists
SELECT @Alphanumericcol
FROM Inserted i, AMGR_User_Fields_Tbl t
WHERE t.AlphaNumericCol = i.AlphaNumericCol
AND t.Client_Id = i.Client_Id
-- (@Alphanumericcol = 1)
-- Display Error and then Rollback transaction
BEGIN
RAISERROR ('This row already exists in the table', 16, 1)
ROLLBACK TRANSACTION
END

The result i get is, if i input a duplicate number it fills in a null in the field so my question is how do i get it to tell me its duplicate and let me insert a new one

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Remove Duplicates On A Table

Jan 29, 2008

Hi All
I have the dbo.OperatingHour It has many duplicates and I want to remove duplicates permanently
The statement below works but when I open the table there are no changes

Insert into OperatingHour(Weekdays, Wednesdays, Fridays,Saturdays, [Sundays/Public Holidays])
(SELECT DISTINCT Weekdays, Wednesdays, Fridays,Saturdays, [Sundays/Public Holidays] FROM OperatingHour)

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Identifying Duplicates In A Table

Mar 11, 2006

I need help flagging duplicate records in ome tables I have.For example if I have Table1 which conatins Field1, Field2 and Field3like belowField1 Field2 Field3 Field4Paul 18 Null NullPaul 18 Null NullJohn 19 Null NullHow would I;1. put a 'Y' in Field3 to mark the two records which are duplicates.2. put a 'Y' in Field4 to mark ONLY ONE of the duplicate records.Regards,Ciarán

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Process For Removing Duplicates In Table?

May 18, 2012

I have a very large table that can contain up 3 to 5 duplicate records. Every month around 100,000 new records come in. Sometimes it's an ammended record, other times is just duplicated by error.

Is it possible to keep the latest record dumped into the table and delete the others? Does SQL track the order of the data being dropped into the table?

The layout would look like this. There are 10-15 other columns in the table where adjustments can also be made.

Lease# Year Month Production
12345 2008 10 1,231
12345 2008 10 1,250
12345 2008 10 1,250

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How To Delete Duplicates Values From Table

Aug 13, 2013

Table Design --> Componenet (table name)

ID.
Country ID
BT-ID
Component
Activation

I need to delete the duplicate values from Componenet table

ID CountryID BT-ID Componenet Activation
A3CD GD58 TR77 RX 1
BER2 GD58 TR77 RX 1
XEW7 GD58 TR77 MX 1
O4T4 GD58 TR77 MX 1
PE78 GD58 TR77 GX 1

Expected Output

ID CountryID BT-ID Componenet Activation
A3CD GD58 TR77 RX 1
XEW7 GD58 TR77 MX 1
PE78 GD58 TR77 GX 1

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Is There A Way To Remove Table Rows Duplicates

Dec 3, 2006

If we want to remove the duplicate row and leave only one row instead of 2 or 3 rows for example with the same column values.

2/ The same question but when all the columns of the row are duplicate except the id field.
Thanks a lot.

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Comparing Rows Within The Same Table (duplicates)?

Jun 15, 2007

How do I only select rows with duplicate dates for each person (id)? (The actual table has approximately 13000 rows with approximately 3000 unique ids)

p_key id date pulse
--------------------------------------
1 32 5/25/2006 80
2 32 5/25/2006 85
3 32 4/26/2006 81
4 32 6/15/2006 82
5 15 1/20/2006 75
6 15 3/25/2006 80
7 15 3/25/2006 83

Result table I am looking for:
p_key id date pulse
------------------------------------
1 32 5/25/2006 80
2 32 5/25/2006 85
6 15 3/25/2006 80
7 15 3/25/2006 83

Thanks.

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Appending Data To A Table But Not Duplicates

Jul 23, 2005

Hiya everyone,I have two tables in SQL 2000. I would like to append the contents ofTableA to TableB.Table A has around 1.1 Million Records.Table B has around 1 Million Reocords.Basically TableA has all of the data held in TableB plus 100,000additional records. I would only like to import or append these newadditional records. I have a unique index already setup on Table B.Any ideas pretty pretty please?Paul.Ps. (Have been messing around with DTS but get a unique violation error- Which is kinda what I want I guess, but would like SQL to ignore theerror and only copy the new data - if only)

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Table Joins Causing Duplicates?

May 15, 2015

I have a table with call data (ContactID, Queues Entered, Call Status, Date & Time Stamps etc). Each entry relating to a contact ID goes onto a new row. The first row for a contact is the date and time it is created. It then captures the queue (or queues) it enters before it is answered. Finally, it captures when the call is released (Completed).

I'm trying to link all this data into one single row per contact ID to make it easier to report on.

I started off by using DISTINCT to pull back all of the Contact ID's. I then used a Left Join to pull back the date and time of creation. I created a further Left Join to pull back the first queue that it entered and so on.

When I did this, I started getting duplicates. This is because some calls enter more than one queue.

How can I do this so that it only has one ContactID per row. Also, for the Queue, is there anything I can do to ensure it pulls back the first Queue it enters? (These are time stamped). Subsequently, I would then need to add the second and third queue it enters in other columns. (A call can enter a maximum of 3 queues).

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Transact SQL :: Retrieve Currently Created Date From Master Table To Load Into Parent And Child Table

May 12, 2015

In Master tabel i have these date datas

2015-05-10

2015-05-11

2015-05-12

SO when i try to load from  Master table to parent and child table i am using using expresssion like 

select B.ID,A.* FROM FLATFILE_INVENTORY AS A JOIN DMS_INVENTORY AS B ON 
A.ACDealerID=B.DMSDEALERID AND A.StockNumber=B.STOCKNUMBER AND 
A.InventoryDate=B.INVENTORYDATE AND A.VehicleVIN=B.VEHICLEVIN
WHERE convert(date,A.[FtpDate]) = convert(date,GETDATE())  and convert(date,B.Ftpdate) = convert(date,getdate()) ;

If i use this Expression i am getting the current system date data's only  from Master table to parent and child tables.

My Problem is If i do this in my local sserver using the above Expression if i loaded today date and if need to load yesterday date i can change my system date to yesterday date and i can run this Expression.so that yeserday date data alone will get loaded from Master to parent and  child tables.

If i run this expression to remote server  i cannot change the system date in server.

while using this Expression for current date its loads perfectly but when i try to load yesterday data it takes current date date only not the yesterday date data.

What is the Expression on which ever  date i am trying load in  the master table  same date need to loaded in Parent and child table without changing the system Date.

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What's The Accepted Way To Retrieve Records In A SQL Table With Null Values Using A Visual Studio 2005 Table Adapter?

Jan 21, 2008

I'm using an ObjectDataSource in Visual Studio to retrieve records from a SQL Server 2005 database.
 I have a very simple dilemma.  In a table I have fields FirstName, Surname, Address1, Address2, Address3 etc. None of these are mandatory fields.
It is quite common for the user not to enter data in Address2, Address3, so the values are <null> in the SQL table.
In Visual Studio 2005 I have an aspx form where users can pass search parameters to the ObjectDataSource and the results are returned according to the passed in parameters.
The WHERE clause in my Table Adapter is:WHERE (Address1 LIKE @Address1 + '%') AND (Address2 LIKE @Address2 + '%') AND   (Address3 LIKE @Address3 + '%') AND (FirstName LIKE @FirstName + '%') AND (Surname LIKE @Surname + '%')
If, for example, I simply want to search WHERE FirstName LIKE ‘R’, this does not return any results if the value of Address3 is <null>
My query is this: Could someone please show me the best way in Visual Studio 2005 to return records even if one of the Address fields is <null>.
For reference, I have tried: Address3 LIKE @Address3 + '%' OR IS NULLThis does work, however itsimply returns every instance where Address3 is <null>  (accounting for about 95% of the records in the database). Thanks in advance Simon
 

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MSSQL Dbo Table Duplicates On Host Server

Apr 26, 2005

(i am not sure which forum to post this too)
Hi, I imported a table onto my host's server, table_Login which has username password, and userID. userID is Primary Key & identity.
When I had my code do insert of new user, I was getting error the Login.userID doesn't allow null values. Which shouldn't have mattered because userID is an identity.
After making a diagram from Enterprise Manager, I noticed that I have two Login tables (although only one shows in Enterprise Manager's "Table" node view. The second table, which had none of the constraints that my table of the same name which is listed under the "Table" node does; appears to be the table which is being written to by my code.
I can't find this table, Login(dbo), through Enterprise Manager, nor am i sure how to access it through Query Analyzer. Needless to say, I don't like this arrangement. and well tech support for this host seems to leave a lot to be desired.
Anyone know what needs to be done so that I can fix it or fight with tech support to convince them that they should?

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Resolving Duplicates Entries In Table Among 10 Databases

Feb 11, 2006

HiOur product uses MS-SQL Server 2000. One of our customer has 10installations with each installation stroring data in its own database.Now the customer wants to consolidate these databases into one and wealready have plan for that by consolidating one DB at a time. But firstthey want to find how many unique or duplicate entries they have acrossall the 10 databasesAssumptions:1. All the databases reside on the same server. (This is just anassumption, not the real environment at customer site)2. Databases can not be merged before it is found how many unique orduplicate rows exist.Table under consideration:Message(HashID PK,....)# of rows in Message table in each of databases: 1 MillionHere is my question: How can I find how many unique or duplicateentries they have across all the 10 databases. I easily find uniquerows for two databases with a query like this:SELECT COUNT(A.HasID) FROM db1.dbo.Message A LEFT OUTER JOIN ONdb2.dbo.Message B ON A.HashID = B.HashID WHERE B.HashID IS NULLHow can I do this for 10 databases. This will require factorial of 10queries to solve this problem.I will appreciate if someone can provide hint on this.RegardsAK

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Transact SQL :: Remove Reverse Duplicates From Table

Sep 1, 2015

I have table with columns as ID, DupeID1, DupeID2. ID column is unique. DupeID1 and DupeID2 -- the combination should only be there once. I don't want reverse combination of duplicates, i.e. DupeID2, DupeID1 in the table. How can I delete the reverse duplicates from this table?

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Transact SQL :: Differentiate Duplicates In A Table Without Deleting?

Jul 27, 2015

How would you differentiate duplicates in a table without deleting.

I have a table name ANGEL that contains duplicate value and i want to append a letter V to the duplicates instead of deleting them.

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T-SQL (SS2K8) :: Delete Duplicates From Table Based On Two Columns?

May 20, 2015

Assuming I have a table similar to the following:

Auto_ID Account_ID Account_Name Account_Contact Priority
1 3453463 Tire Co Doug 1
2 4363763 Computers Inc Sam 1
3 7857433 Safety First Heather 1
4 2326743 Car Dept Clark 1
5 2342567 Sales Force Amy 1
6 4363763 Computers Inc Jamie 2
7 2326743 Car Dept Jenn 2

I'm trying to delete all duplicate Account_IDs, but only for the highest priority (in this case it would be the lowest number).

I know the following would delete duplicate Account_IDs:

DELETE FROM staging_account
WHERE auto_id NOT IN
(SELECT MAX(auto_id)
FROM staging_account
GROUP BY account_id)

The problem is this doesn't take into account the priority; in the above example I would want to keep auto_ids 2 and 4 because they have a higher priority (1) than auto_ids 6 and 7 (priority 2).

How can I take priority into account and still remove duplicates in this scenario?

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SQL Server 2008 :: Table Returning Duplicates When Joined On

Jul 7, 2015

We currently have an application whereby the user will come along sign up add some information about them, choose what interests / hobbies they're in to and then click save.After completing the sigh up they're able to search for other individuals within locations (look at this functionality as a dating site) We currently have a stored procedure whereby when the user clicks Advance Search they fill in all the fields they filled in when signing up and when they click search we return all users that match the data the user has selected. This part is working correctly.

The issue im having is extending this stored procedure to take a user defined table type which has two columns UserId and ActivityId both columns are nullable.This user defined table type is referred to in two places, when the user signs up and when they do an advance search.When the user does an advance search he / she can choose a list of hobbies / interests this will then be passed in to the database and I will join on my User_Activities table to find the users that have the Activities passed in.When I join on this table I get duplicate records purely because one user may have 5 - 10 activities depending on how active the individual is. My current stored procedure looks like this

@Ambition int = null,
@Body int = null,
@Diet int = null,
@Drinking int = null,
@Ethnicity int = null,
@Exercise int = null,
@HeightFrom int = null,

[code]...

So my question is how can I select all users that match the criteria passed in, as well as finding the users that match the activities passed in (the user can either match all of them or a minimum of 1). Also my User_Activities has two columns UserId and ActivityId identical to the user defined table type

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SQL Server 2008 :: How To Find Duplicates In A Table As Per Particular Column

Nov 2, 2015

I am having a main table and temptable.

Every sunday, new data will be loaded from temptable to main table. I have to make sure that, duplicates does not get loaded from temptable to maintable.

For example, if last sunday a record gets loaded from temp to main. If this sunday also the same record is present then it means that is a duplicate.

The duplicate is decided on below scenario

select 'CodeChanges: ', count(*) from CodeChanges a, CodeChanges_Temp b
where a.AccountNumber = b.AccountNumber and
a.HexaNumber = b.HexaNumber and
a.HexaEffDate = b.HexaEffDate and
a.HexaId = b.HexaId and

[Code] ...

Yesterday (Sunday) , data from temp got loaded onto maintable but with duplicates.

There is a log which just displays number of duplicates.

Yesterday the log displayed 8 duplicates found. I need to find out the 8 duplicates which got loaded yesterday and delete it off from main table.

There is a column in both tables which is 'creation date and time'. Every Sunday when the load happens this column will have that day's date .

Now i need to find out what are all the duplicates which got loaded on this sunday.

The total rows in temp table is : 363
No of duplicates present is : 8

I used below query to find out the duplicates but it is returning all the 363 rows from the maintable instead of the 8 duplicates.

Select 'CodeChanges: ', * from CodeChanges a where
exists
( Select 1 from CodeChanges_Temp b where
a.HexaNumber = b.HexaNumber and
a.HexaEffDate = b.HexaEffDate and

[Code] ...

Need finding the duplicate records which has creation date time as '2015-11-01 00:00:00.000' and all the above columns mentioned in the query matches.

Example

Few colums only metioned below

creationdateandtime HexaNumber HexaCode
1. 1987-10-01 00:00:00.000 5 3
2. 2015-11-01 00:00:00.000 5 3

So here the second record is duplicate. This is what I am trying to find.

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Converting Duplicates Records Into Non Duplicates?

Jan 26, 2015

Is there a query or a way to convert duplicates value in a column to non duplicates.

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SQL Server 2008 :: Merge Statement When Source Table Supplies Duplicates

Apr 26, 2015

With merge/insert statements ...Is DISTINCT best way to handle problem of source table containing duplicate rows, along with WHERE NOT IN statement? the source dataset is large and having to do DISTINCT and further filtering is taxing on the ETL.

DDL
source table
CREATE TABLE [dbo].[source](
[Product_ID] [INT] NOT NULL,
[ProductCode] [VARCHAR](20) NULL,
[ProductName] [VARCHAR](100) NULL,
[ProductColor] [VARCHAR](20) NULL,

[code]....

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Copy Raw Data From A Flat File To A Database Table, BUT Do Not Insert Duplicates

Aug 2, 2007

Hi,

I'm new to SQL Server 2005 SSIS. I'm trying to do something very simple, but I cannot figure it out, PLEASE HELP!

I have a flat file, which I read and then insert the data in a database table, that works fine. The problem is that I don't want to insert duplicate records. For example; if I run the package again, it will appent to the table. What I need to do is that if the package runs again, check if the record already exist, based one two columns, date and hour, and do not insert the record.

Thank you,

Aldo

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How To I Retrieve The First Value From A Table In T-SQL?

May 21, 2006

I want to do something similar to ExecuteScalar in ADO.net but instead in T-SQL.Basically I want to do a query that will return the first value in the table queried and put it into a variable.  How do I do this?Thanks in advance.

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Retrieve Second Max Value In A Sql Table

Feb 25, 2004

Hi all,
I want to retrieve the second maximum value of a column data present in SQL table.Please help....

A
----
10
25
23
15


here I want 23 as the result.

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Retrieve Value From A Table With The Value From So

Apr 11, 2008

I am trying t get output for the following querry but I know am missing something. Can anyone help me out with it.


select distinct productnum, (SELECT SUM(quantity) FROM orderlineitem w WHERE w.productnum = e.productnum) as Quantity
from orderlineitem e where parentOrderlineitemid is null order by Quantity desc)

In the above query am getting the productnum and quanity and it looks like this

productnum quantity
abc 6
ttt 3
sss 1

What am tring to do to this query is that . From another table 'product' i want all the data to be retrieved with this productnum(the table 'product' has a column called prductnum). I don't know how to write a query for this.

my query is
select * from product where productnum in (
select distinct productnum, (SELECT SUM(quantity) FROM orderlineitem w WHERE w.productnum = e.productnum) as Quantity
from orderlineitem e where parentOrderlineitemid is null order by Quantity desc)

Thanks.

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