CreateQuery t_desc_subcolumns (children 3)
 Identifier t_desc_subcolumns
 Columns definition (children 1)
  ExpressionList (children 5)
   ColumnDeclaration d (children 1)
    DataType Date
   ColumnDeclaration n (children 2)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
    Literal \'It is a nullable column\'
   ColumnDeclaration arr1 (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt32
    Function CODEC (children 1)
     ExpressionList (children 1)
      Function ZSTD
   ColumnDeclaration arr2 (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType String
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier d
      Function toIntervalDay (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
   ColumnDeclaration t (children 2)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      NameTypePair s (children 1)
       DataType String
      NameTypePair a (children 1)
       DataType Array (children 1)
        ExpressionList (children 1)
         DataType Tuple (children 1)
          ExpressionList (children 2)
           NameTypePair a (children 1)
            DataType UInt32
           NameTypePair b (children 1)
            DataType UInt32
    Function CODEC (children 1)
     ExpressionList (children 1)
      Function ZSTD
 Storage definition (children 2)
  Function MergeTree
  Identifier d