message: Add PRAGMA force_parallelism
diff: @@ -125,6 +125,16 @@ void PhysicalPragma::GetChunkInternal(ExecutionContext &context, DataChunk &chun
  throw ParserException("Disable verification must be a statement (PRAGMA disable_verification)");
  }
  context.client.query_verification_enabled = false;
  + } else if (keyword == "force_parallelism") {
  + if (pragma.pragma_type != PragmaType::NOTHING) {
  + throw ParserException("Force parallelism must be a statement (PRAGMA force_parallelism)");
  + }
  + context.client.force_parallelism = true;
  + } else if (keyword == "disable_force_parallelism") {
  + if (pragma.pragma_type != PragmaType::NOTHING) {
  + throw ParserException("Disable force parallelism must be a statement (PRAGMA disable_force_parallelism)");
  + }
  + context.client.force_parallelism = false;
  } else {
  throw ParserException("Unrecognized PRAGMA keyword: %s", keyword.c_str());
  }
  