CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration id (children 1)
    DataType Int32
   ColumnDeclaration val (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Float64
   ColumnDeclaration dt (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType DateTime64 (children 1)
       ExpressionList (children 1)
        Literal UInt64_6
   ColumnDeclaration type (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int32
 Storage definition (children 2)
  Function MergeTree
  Identifier id
