code: function dontParenthesizeSubQuery(parentQuery){
  	if (!parentQuery) return false;
  	if (parentQuery.nodes.length === 0) return false;
  	if (['INSERT', 'REPLACE'].indexOf(parentQuery.nodes[0].type) === -1)  return false;
  	return true;
  }
docs: If the parent of the subquery is an INSERT we don't want to parenthesize.
  This happens when you create the query like so:
  
  var query=post.insert(post.id)
  var select=user.select(user.id)
  query.add(select)
  
  @param parentQuery
  @returns {boolean}