CreateQuery t_ttl_modify_column (children 3)
 Identifier t_ttl_modify_column
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration InsertionDateTime (children 1)
    DataType DateTime
   ColumnDeclaration TTLDays (children 2)
    DataType Int32
    Function CAST (children 1)
     ExpressionList (children 2)
      Literal UInt64_365
      Literal \'Int32\'
 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)
        Identifier TTLDays
  Set
