Find related bought products (SQL server database)

Question

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i have to tables bills and BillDetails

C#

bill table contain the following fields 

billId, salesManId, purchaseBranch

billDetails table contain the following fields

billDetailId , billId, productId,  purchaseBranch, Quantity

what i want is report to find top 2 related products

for example

1- people bought iphoneX bought
Nomad Rugged Cable
Kenu Stance Tripod

2- people bought Samsung s5282 bought
Bluetooth Keyboards
MP3 Player

i know it is somewhat called recommendation system but i can not know how to implement it

What I have tried:

i searched for

recommendation system

but can not know how to implement it

Posted 29-Jul-18 1:48am

TheSniper105

Updated 29-Jul-18 7:32am

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Gerry Schmitz · Accepted Answer · 2018-07-29T07:33:00

Solution 1

1) Count Bill Details by Product Id; take the top 2.

2) For each "top" product, get the related Bill Id's from Bill Details

3) For each top product and Bill Id, get the "other" product's on that bill, excluding top product

4) Count the selected by top product, bill id, other product records; take the top 2 for each of the 2 "top" products

Posted 29-Jul-18 7:33am

Gerry Schmitz

Updated 29-Jul-18 7:34am

v2

Comments

TheSniper105 30-Jul-18 1:15am

1) Count Bill Details by Product Id; take the top 2.
how ?