Method dbadd

lib_acl_cpp/samples/benchmark/sqlite/main.cpp:55–73

	}

	int dbadd(acl::db_handle& db, int max) {
		acl::string sql;
		assert(db.begin_transaction());
		for (int i = 0; i < max; i++) {
			sql.format("insert into tbl_test('key', 'value')"
				" values('key-%d', 'value-%d')", i, i);
			if (db.sql_update(sql) == false) {
				printf("sql_update: |%s| error\r\n", sql.c_str());
				return -1;
			}

			if (i > 0 && i % 1000 == 0) {
				assert(db.commit());
				assert(db.begin_transaction());
			}
		}
		assert(db.commit());
		return max;
	}

	int dbget(acl::db_handle& db, int max) {
		acl::string sql, key, value;