Hi J-L, Quite a while ago I started to write yet another SQL library. The project can be found at https://sourceforge.net/projects/async-db/ My library has very little in common with your library. While your library is mainly fucused on creating valid SQL strings (please correct me if I am wrong), my library is targeted against prepared statements as function objects and asynchronous operations. Creation of SQL strings is out of scope. All it does (or rather "will do") is wrap the C-APIs of Firebird, MySQL, ODBC, Oracle Call Interface, PostgreSQL and SQLite3. I do not really think that my library is ready to present to the public, but it might be interesting to combine our libraries or use them together as a base for a higher level library. Currently my MySQL backend is the most feature rich one. It supports asynchonous operations, statements as function objects, boost::optional<T> for fields that may be NULL, gregorian::date for field DATE, posix_time::time_duration for TIME and posix_time::ptime for DATETIME. Please have a look at the example at https://async-db.svn.sourceforge.net/svnroot/async-db/trunk/examples/mysql.c... cheers, Daniel