SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function in (children 1)
     ExpressionList (children 2)
      Literal \'a\'
      Function splitByChar (children 1)
       ExpressionList (children 2)
        Literal \'c\'
        Literal \'abcdef\'
