CreateQuery ts_data_nullable (children 3)
 Identifier ts_data_nullable
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration timestamp (children 1)
    DataType UInt32
   ColumnDeclaration value (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Float64
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier id
