CreateQuery t_length_2 (children 3)
 Identifier t_length_2
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration arr_length (children 1)
    DataType UInt64
 Storage definition (children 2)
  Function ReplacingMergeTree
  Identifier id
