CreateQuery tabc__fuzz_21 (children 3)
 Identifier tabc__fuzz_21
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration a (children 1)
    DataType Int64
   ColumnDeclaration b (children 2)
    DataType Int8
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier a
      Literal UInt64_1
   ColumnDeclaration c (children 2)
    DataType DateTime
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier b
      Literal UInt64_1
   ColumnDeclaration s (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType DateTime64 (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
 Storage definition (children 2)
  Function MergeTree
  Identifier a
