title: How to convert Oracle triggers to mysql
body: <p>This is oracle trigger :</p>
  
  <pre><code>CREATE OR REPLACE TRIGGER "SW_TARIFF_TARIFF_TRIGGER" 
  BEFORE INSERT OR UPDATE OF "LAST_UPDATED_DT" ON "DEMO_DB"."SOLID_WASTE_TARIFF_MASTER" 
  REFERENCING OLD AS "OLD" NEW AS "NEW" 
  FOR EACH ROW 
  BEGIN   
      :NEW.LAST_UPDATED_DT := SYSDATE; 
  END;
  </code></pre>
  
  <p>I want to move it to mysql. But i don't know know i write cretae and replace with one trigger and also have problem with mysql replacement for of keyword of oracle . Can any one suggest me how to convert this oracle trigger to mysql .</p>