const Oid paramTypes[] = { 17, 18 };

                ssql = "UPDATE tablename SET data = $1 WHERE (name = $2)";

		int nParams = 2;

		const char* paramValues[2];
		paramValues[0] = content_buffer;
		paramValues[1] = fname.c_str();

		int paramLengths[2];
		paramLengths[0] = size;
		paramLengths[1] = fname.length();

		int paramFormats[2];
		paramFormats[0] = 1; // binary
		paramFormats[1] = 0; // text


		PGresult *res;

		res = PQexecParams(pgconn, ssql, nParams, paramTypes, paramValues,
			paramLengths, paramFormats, 0);

		if (PQresultStatus(res) != PGRES_COMMAND_OK) {
			char * msg = PQresultErrorMessage(res);
			LOG(ERROR) << "Update binary failed: " << msg;
		}

                PQclear(res);