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