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CREATE TABLE dbo.Products ( Product NVARCHAR(MAX), TransactionId INT ) INSERT INTO Products VALUES ('apple', 1), ('apple', 1), ('apple', 2), ('orange', 2), ('orange', 2), ('pineapple', 2) SELECT a.Product ,a.[count of transactions] ,SUBSTRING(a.all_transactions, 0, LEN(a.all_transactions)) [IDs] FROM ( SELECT Product ,COUNT(DISTINCT TransactionId) [count of transactions] ,( SELECT DISTINCT CAST(TransactionId AS VARCHAR(10)) + ',' [text()] FROM dbo.Products inner_p WHERE inner_p.Product = Products.Product --GROUP BY inner_p.Product FOR XML PATH('') ,TYPE ).value('.', 'NVARCHAR(MAX)') [all_transactions] FROM dbo.Products GROUP BY Product ) a
Product
count of transactions
IDs
apple
2
1,2
orange
1
2
pineapple
1
2