SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function positionCaseInsensitiveUTF8 (alias res) (children 1)
     ExpressionList (children 2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Function concat (children 1)
         ExpressionList (children 2)
          Literal \' test a1ßAa test\'
          Function arrayStringConcat (children 1)
           ExpressionList (children 1)
            Function arrayMap (children 1)
             ExpressionList (children 2)
              Function lambda (children 1)
               ExpressionList (children 2)
                Function tuple (children 1)
                 ExpressionList (children 1)
                  Identifier x
                Literal \' \'
              Function range (children 1)
               ExpressionList (children 1)
                Literal UInt64_20000
      Literal \'a1ẞaa\'
