CreateQuery t1__fuzz_13 (children 3)
 Identifier t1__fuzz_13
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration id (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int16
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier id
  Set
