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ODBC API on macOS

1. A driver manager is required to manage communication between applications and the ODBC driver. DuckDB supports `unixODBC`, which is a complete ODBC driver manager for macOS and Linux. Users can install it from the command line via Homebrew:

       brew install unixodbc

2. DuckDB releases a universal ODBC driver for macOS (supporting both Intel and Apple Silicon CPUs). To download it, run:

       wget https://github.com/duckdb/duckdb/releases/download/v1.1.0/duckdb_odbc-osx-universal.zip

3. The archive contains the `libduckdb_odbc.dylib` artifact. To extract it to a directory, run:

       mkdir duckdb_odbc && unzip duckdb_odbc-osx-universal.zip -d duckdb_odbc

4. There are two ways to configure the ODBC driver, either by initializing via the configuration files, or by connecting with `SQLDriverConnect`. A combination of the two is also possible.

   Furthermore, the ODBC driver supports all the configuration options included in DuckDB.

   > If a configuration is set in both the connection string passed to `SQLDriverConnect` and in the `odbc.ini` file, the one passed to `SQLDriverConnect` will take precedence.

   For the details of the configuration parameters, see the ODBC configuration page.

5. After the configuration, to validate the installation, it is possible to use an ODBC client. unixODBC uses a command line tool called `isql`.

   Use the DSN defined in `odbc.ini` as a parameter of `isql`.

       isql DuckDB

       +---------------------------------------+
       | Connected!                            |
       |                                       |
       | sql-statement                         |
       | help [tablename]                      |
       | echo [string]                         |
       | quit                                  |
       |                                       |
       +---------------------------------------+

       SQL> SELECT 42;

       +------------+
       | 42         |
       +------------+
       | 42         |
       +------------+

       SQLRowCount returns -1
       1 rows fetched

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