linux - Mysql Trigger - How to trigger on particular row only -


I have an imaginary table, the result is: 

  Products | Price Applet 1 Orange 2 I'm trying to create a trigger that will be executed before the update, which will add only 2 for the price if the new value was for apple this trigger What do you look like Example execute someone  
  fruit set value = 2 where product = 'apple';   
 The new value for apples will be 4.  
 I tried to trigger down but surely 2  
  SEG set value = new.value + 2 ed    
 
 
 Use some code like this in your trigger:  
  if new.product = 'Apple 'Then set new.value = new.value + 2; end if;

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