nebula graph 常用语句

管理 Storage 主机

nebula> ADD HOSTS <ip>:<port> [,<ip>:<port> ...];
nebula> ADD HOSTS "<hostname>":<port> [,"<hostname>":<port> ...];

删除 Storage 主机

nebula> DROP HOSTS <ip>:<port> [,<ip>:<port> ...];
nebula> DROP HOSTS "<hostname>":<port> [,"<hostname>":<port> ...];

查看 Storage 主机

SHOW HOSTS STORAGE;

show hosts

tag

创建

 CREATE TAG IF NOT EXISTS t5(p5_1 int, p5_2 string);
 CREATE TAG IF NOT EXISTS t3(p1 int);
 CREATE TAG IF NOT EXISTS t4(p2 String);

插入点

INSERT VERTEX  t3 (p1), t4(p2), t5(p5_1, p5_2) VALUES "21": (321, "hello", 5, "p5");

查询

lookup on cdp_group1 yield id(vertex) as id | DELETE VERTEX $-.id;

CREATE TAG INDEX IF NOT EXISTS index_cdp_group1 ON cdp_group1();
REBUILD TAG INDEX index_cdp_group1;

LOOKUP ON cdp_group1 \
 YIELD id(vertex);


lookup on cdp_group1 yield id(vertex) as id | DELETE VERTEX $-.id;
-------------
drop tag index index_cdp_group1
match (g:cdp_group1) return g limit 111