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Re: Help with a trigger to change field to a negative value
Posted by: Peter Brawley
Date: May 11, 2021 02:30PM

Is this what you mean?

drop trigger if exists transactions_ins;
delimiter go
create trigger transactions_ins before insert on transactions for each row
begin
  if new.withdraw='yes' and new.amount > 0 then
    set new.amount = -new.amount;
  end if;
end;
go
delimiter ;

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Re: Help with a trigger to change field to a negative value
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May 11, 2021 02:30PM


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