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Editorial Team
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Asked: 2026-05-17T01:59:27+00:00

I need help with building SQL query. I have 4 tables: Sellers, Goods, Projects

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I need help with building SQL query.

I have 4 tables: Sellers, Goods, Projects and Sales.

Sellers table has following structure:

SellerID (int) PK
SellerName (nvarchar)
SellerStatus (int)
SellerCity (nvarchar)

Goods:

GoodsID (int) PK
GoodsTitle (nvarchar)
GoodsColor (nvarchar)
GoodsSize (int)
GoodsCity (nvarchar)

Projects:

ProjectID (int) PK
ProjectTitle (nvarchar)
ProjectCity (nvarchar)

Sales:

SellerID (int)
GoodsID (int)
ProjectID (int)
Price (int)

I need to get Sellers ID’s, which distribute same Goods to all Projects.

Can anybody help me with query?
I use MSSQL.

Thanks in advance

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1 Answer

  1. Editorial Team

    I honestly aint sure if i have understood exactly all the requirements (i did go through all the comments but am a bit confused after that). However, if you want ALL Sellers who have SOLD atleast 1 GOODs to ALL projects, then the below might give you that, i think.

    Can you try it out and see if it does? I really have no access to a DB to try it out right now

    Also, in case it isnt meeting some requirement which i have missed, please feel free to elaborate a bit, maybe using example data – which might make it simpler for all.

    SELECT SellerID FROM SALES
GROUP BY SellerID, GoodsID
HAVING COUNT(ProjectID) = SELECT count(ProjectID) FROM Projects
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