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Unable to get Primary Keys in the tables
I am not able to get primary key in EmailDelivered , EmailOpened , EmailSent , FormSubmitted , FormVisited , WebsiteVisited . Below is the reference of one of the Table nad other tables are also ...
Many of these tables are external or system tables that do not have a primary key defined in the traditional sense. For example, in the EmailDelivered and similar tables, the combination of fields (like message ID, timestamp, recipient, etc.) often serve as a composite key, but there may not be a single explicit primary key column.