How to implement "null on duplicate entry"?

K

komino2021-11-16 13:11:39

SQL

komino, 2021-11-16 13:11:39

Is there any built-in function that would write null instead of a value when a duplicate record in a connection is used?

eg:

Parent Child
John | Adam
null | Alice
null | Jeremy
Daphne | Peppa

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