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C++ API 11228
Installation To use the DuckDB C++ API, download the libduckdb archive for your platform. The latest stable version of the DuckDB C++ API is 2.0.0. Warning DuckDB's C++ API is internal. It is not guaranteed to be stable and can change witho ... auto result = con.Query("SELECT * FROM integers"); if (result->HasError()) { cerr << result->GetError() << endl; } else { cout << result->ToString() << endl; } Query will not throw exceptions under normal circumstances. Instead, invalid queries or o ... ype::CONSTRAINT: { // Example handling auto errorObject = result->GetErrorObject(); errorObject.ConvertErrorToJSON(); std::cout << errorObject.Message() << std::endl; break; } // More handling } } else { // Normal code } If successful, other fields a ... ; } else { // Print the column names as a header row for (idx_t col_idx = 0; col_idx < result->ColumnCount(); col_idx++) { cout << result->GetNames()[col_idx]; cout << (col_idx + 1 < result->ColumnCount() ? "\t" : "\n"); } // Iterate over every row a ...
https://man.mtool.work/duckdb/2.0/clients/cpp.html
ODBC 101: A Duck Themed Guide to ODBC 7485
What is ODBC? ODBC which stands for Open Database Connectivity, is a standard that allows different programs to talk to different databases including, of course, DuckDB. This makes it easier to build programs that work with many different d ... env, &dbc); std::string dsn = "DSN=duckdbmemory"; SQLConnect(dbc, (SQLCHAR*)dsn.c_str(), SQL_NTS, NULL, 0, NULL, 0); std::cout << "Connected!" << std::endl; 2.b. Connecting with SQLDriverConnect Alternatively, you can connect to the ODBC driver usin ... _ONLY"; SQLDriverConnect(dbc, nullptr, (SQLCHAR*)dsn.c_str(), SQL_NTS, str, sizeof(str), &strl, SQL_DRIVER_COMPLETE); std::cout << "Connected!" << std::endl; 3. Adding a Query Now that the application is set up, we can add a query to it. First, we ne ... ocess the Results Now that we have the results, we can do whatever we want with them. For example, we can print them: std::cout << "Value: " << int_val << std::endl; You can also execute additional queries and perform other database operations such a ...
https://man.mtool.work/duckdb/2.0/guides/odbc/general.html
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