title: MySQL disable all triggers
body: <p>For test correctness of query I need disable all triggers in db.
  I see that in information_schema exists table TRIGGERS.
  Is possible temporarily disable all triggers using this table?
  E.g. like: </p>
  
  <pre><code>update TRIGGERS set TRIGGERS_SCHEMA='myschema_new' 
  where TRIGGERS_SCHEMA='myschema'
  </code></pre>
  
  <p>and after finish all test return all triggers like:</p>
  
  <pre><code>update TRIGGERS set TRIGGERS_SCHEMA='myschema'
  where TRIGGERS_SCHEMA='myschema_new'
  </code></pre>
  
  <p>May be this can corrupt db or after triggers will not works? I didn't found about it in documentation.</p>