CreateQuery test_ins_arr_arr_arr (children 3)
 Identifier test_ins_arr_arr_arr
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration date (children 1)
    DataType Date
   ColumnDeclaration val (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType Array (children 1)
         ExpressionList (children 1)
          DataType UInt64
 Storage definition (children 1)
  Function MergeTree (children 1)
   ExpressionList (children 3)
    Identifier date
    Identifier date
    Literal UInt64_8192