[GitHub] [arrow] YoungRX commented on issue #34515: [C++] How to use predicate pushdown of binary and decimal types in arrow::parquet?

["YoungRX (via GitHub)" <gi...@apache.org>]

YoungRX commented on issue #34515:
URL: https://github.com/apache/arrow/issues/34515#issuecomment-1469205185

   Yes. But I use `arrow::Datum(std::forward<int64_t>(timestamp_value));` as a literal.
   The specific code is as follows:
   ```
       if (strcmp(opName, ">") == 0) {
           predicate_filter.push_back(arrow::compute::greater(
               arrow::compute::field_ref(colField->name()),
               arrow::compute::literal(arrow::Datum(std::forward<int64_t>(timestamp_value)))
           ));
   ```
   According to the example you gave:
   ```
       if (strcmp(opName, ">") == 0) {
           predicate_filter.push_back(arrow::compute::greater(
               arrow::compute::field_ref("timestamp_col"),
               arrow::compute::literal(arrow::Datum(std::forward<int64_t>(17)))
           ));
   ```
   Then, an error is reported when Bind() is used.
   
   If I use `literal(std::make_shared<TimestampScalar>(timestamp(), 17))`, is the problem likely to be solved? What about the other types?


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