CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration row_id (children 1)
    DataType UInt32
   ColumnDeclaration str (children 1)
    DataType String
  ExpressionList (children 1)
   Index (children 2)
    Identifier str
    Function tokenbf_v1 (children 1)
     ExpressionList (children 3)
      Literal UInt64_256
      Literal UInt64_2
      Literal UInt64_0
 Storage definition (children 2)
  Function MergeTree
  Identifier row_id