title: MySQL to MariaDB - INSERT INTO with WHERE NOT EXIST
body: <p>I have this query on one of my script working on mysql database and not in mariadb database.</p>
  
  <pre><code>INSERT INTO myTable (item1, item2) 
      SELECT 'A','B' 
      WHERE NOT EXISTS (
          SELECT item1, item2
          FROM myTable 
          WHERE myTable.item1='A' AND myTable.item2='B') LIMIT 1;
  </code></pre>
  
  <p>It's insert value if this value doesnt exist.</p>
  
  <p>Is it possible to have a kind of this query working on the both database (mariaDB and mysql) ?</p>