CreateQuery t_ttl_modify_column (children 3)
 Identifier t_ttl_modify_column
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration InsertionDateTime (children 1)
    DataType DateTime
 Storage definition (children 4)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
  ExpressionList (children 1)
   TTLElement (children 1)
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier InsertionDateTime
      Function toIntervalDay (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
  Set
