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- Your first paragraph answers the question. If performance is your only concern, validation has to be done in DBBasilevs– Basilevs2025-04-04 22:29:26 +00:00Commented Apr 4 at 22:29
- Are you writing a control system for a passenger jet carrying 400 people, or Facebook for Cats?whatsisname– whatsisname2025-04-05 21:47:37 +00:00Commented Apr 5 at 21:47
- It's not an answer to your title question but you can implement this validation as part of your insert/update by using a where clause which implements your condition. Then you check for how many rows were created or updated. It's a little tricker for the insert but still doable.JimmyJames– JimmyJames2025-04-07 16:32:15 +00:00Commented Apr 7 at 16:32
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