CreateQuery t_async_insert_alter (children 3)
 Identifier t_async_insert_alter
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType Int64
   ColumnDeclaration v1 (children 1)
    DataType Int64
 Storage definition (children 3)
  Function MergeTree
  Identifier id
  Set
