Multiple prefixes

Read rows with row keys matching any prefix in a list.

Code sample

C++

To learn how to install and use the client library for Bigtable, see Bigtable client libraries.

To authenticate to Bigtable, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

namespace cbt = ::google::cloud::bigtable;
using ::google::cloud::StatusOr;
[](cbt::Table table, std::vector<std::string> const& prefix_list) {
  cbt::Filter filter = cbt::Filter::Latest(1);
  auto row_set = cbt::RowSet();
  for (auto const& prefix : prefix_list) {
    auto row_range_prefix = cbt::RowRange::Prefix(prefix);
    row_set.Append(row_range_prefix);
  }

  for (StatusOr<cbt::Row>& row : table.ReadRows(std::move(row_set), filter)) {
    if (!row) throw std::move(row).status();
    std::cout << row->row_key() << ":\n";
    for (cbt::Cell const& cell : row->cells()) {
      std::cout << "\t" << cell.family_name() << ":"
                << cell.column_qualifier() << "    @ "
                << cell.timestamp().count() << "us\n"
                << "\t\"" << cell.value() << '"' << "\n";
    }
  }
}

What's next

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