Question

Columns are

Id int
Timestamp bignit --yyyyMMddhhmmss format
transId char(36) -- guid
type nvarchar(100)
UserId int

I want to find out all those rows for a UserId (Group BY) which has got more than one transactions (transId don’t match) on the same time (timestamp matches) and type in (select typename from typesTable where active =1) and one more filter like the type one.

I tried grouping on userid and timestamp but couldn’t understand how do I add the “don’t match” condition for transId column.

Answer 1

Add this after GROUP BY

HAVING MIN (transId) <> MAX(transId)

or

HAVING COUNT(DISTINCT transId) > 1

This will restrict you to different transId values per userID, timestamp grouping