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I’ve been around this but the value is "NULL"
create trigger tr_ReplID before insert on DuploId FOR EACH ROW set new.ID=new.Replica_ID;
What do I mean... When entering data in the Processes table ID will be the process number, later when making changes in the table with PHP form the process number that will be shown will be the Replica_id, which can be duplicated and so know whenever I am changing the intended process. In my ignorance is the way to do it ... Can you help me? Thank you