create class if not exists /test/sequence (
		
		v_varchar		varchar,
		v_text			text,
		v_int			int,
		v_bigint		bigint,
		v_smalldouble	double,
		v_double		double,
		v_float			float,
		v_bool			bool,
		
		indexes(v_varchar, v_text, v_int, v_bigint, v_double, v_float, v_smalldouble, v_bool),
		keys(v_varchar, v_text)
	) with nickname='sequence' and key=seq
;

delete from /test/sequence with version;

-- cassandra内部的删除操作是异步的，需要等待一段时间，确保删除操作完成
-- 否则后续插入的数据可能会被立即删除
/**
sleep(1s)
**/
;