CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration arr_str (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType String
  ExpressionList (children 1)
   Index (children 2)
    Identifier arr_str
    Function text (children 1)
     ExpressionList (children 2)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier preprocessor
        Function lower (children 1)
         ExpressionList (children 1)
          Identifier arr_str
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
