Getting Repeated values in SQL - sql-server-2008

Question

I was desperately trying harder and harder to get this thing done but didn`t yet succeed. I am getting repeated values when i run this query.
select
tbl_ShipmentStatus.ShipmentID
,Tbl_Contract.ContractID,
Tbl_Contract.KeyWinCountNumber,
Tbl_Item.ItemName,
Tbl_CountryFrom.CountryFromName,
Tbl_CountryTo.CountryToName,
Tbl_Brand.BrandName,
Tbl_Count.CountName,
Tbl_Seller.SellerName,
Tbl_Buyer.BuyerName,
Tbl_Contract.ContractNumber,
Tbl_Contract.ContractDate,
tbl_CountDetail.TotalQty,
tbl_CostUnit.CostUnitName,
tbl_Comission.Payment,
tbl_Port.PortName,
Tbl_Contract.Vans,
tbl_Comission.ComissionPay,
tbl_Comission.ComissionRcv,
tbl_CountDetail.UnitPrice,
tbl_Comission.ComissionRemarks,
tbl_CountDetail.Amount,
tbl_LCStatus.LCNumber,
tbl_ShipmentStatus.InvoiceNumber,
tbl_ShipmentStatus.InvoiceDate,
tbl_ShipmentStatus.BLNumber,
tbl_ShipmentStatus.BLDate,
tbl_ShipmentStatus.VesselName,
tbl_ShipmentStatus.DueDate
from tbl_ShipmentStatus
inner join tbl_LCStatus
on
tbl_LCStatus.LCID = tbl_ShipmentStatus.LCStatusID
inner join Tbl_Contract
on
tbl_LCStatus.ContractID = Tbl_Contract.ContractID
inner join Tbl_CountDetail
on Tbl_Contract.ContractID = Tbl_CountDetail.ContractId
inner join tbl_Comission
on
tbl_Comission.ContractID = Tbl_Contract.ContractID
inner join Tbl_Item
on
Tbl_Item.ItemID = Tbl_Contract.ItemID
inner join Tbl_Brand
on Tbl_Brand.BrandID = Tbl_Contract.BrandID
inner join Tbl_Buyer
on Tbl_Buyer.BuyerID = Tbl_Contract.BuyerID
inner join Tbl_Seller
on Tbl_Seller.SellerID = Tbl_Contract.SellerID
inner join Tbl_CountryFrom
on Tbl_CountryFrom.CountryFromID = Tbl_Contract.CountryFromID
inner join Tbl_CountryTo
on
Tbl_CountryTo.CountryToID = Tbl_Contract.CountryToID
inner join Tbl_Count
on
Tbl_Count.CountID = Tbl_CountDetail.CountId
inner join tbl_CostUnit
on tbl_Comission.CostUnitID = tbl_CostUnit.CostUnitID
inner join tbl_Port
on tbl_Port.PortID = tbl_Comission.PortID
where tbl_LCStatus.isDeleted = 0
and tbl_ShipmentStatus.isDeleted =0
and tbl_LCStatus.isDeleted = 0
and Tbl_CountDetail.isDeleted = 0
and Tbl_Contract.isDeleted = 0
and tbl_ShipmentStatus.LCStatusID = 5
I have also attached a picture of my result set of rows.
Any suggestions why this is happening would really be appreciable.
Result Set

Answer 1

Typically this happens when you have an implicit partial cross join (Cartesian product) between two of your tables. That's what it looks like to me here.
This happens most often when you have a many-to-many relationship. For example, if a single Album allows both multiple Artists and multiple Songs and the only relationship between Artists and Songs is Album, then there's essentially a many-to-many relationship between Artists and Songs. If you select from all three tables at once you're going to implicitly cross join Artists and Songs, and this may not be what you want.
Looking at your query, I see many-to-many between Tbl_CountDetail and tbl_Comission through Tbl_Contract. Try eliminating one of those joins to test to see if the behavior disappears.

Answer 2

Try using the DISTINCT keyword. It should solve your issue
Select DISTINCT ....
Wait as far as I can see your records are not duplicates.
HOWEVER
Notice the CountName column and Shipment ID column
The combination is unique for every row. Hence the values are unique as far as I can see. Try not selecting CountName.
Well if you have distinct rows its not a duplication problem. The issue is during the join a combination is occurring you don't want it to duplicating the results.
Either don't select CountName or you have a mistake in your data.
Only one of those rows should be true either 6 with Count2 or 6 with Count1. Likewise for 7. The fact that your getting both when your not supposed to indicates a logic mistake