SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function trimBoth (children 1)
     ExpressionList (children 1)
      Literal \'   both   \'
    Function trimBoth (children 1)
     ExpressionList (children 1)
      Literal \'   both   \'
