关键字和保留字Graph

关键字是在 nGQL 中具有重要意义的单词。保留关键字需引用方可使用。

非保留关键字无需引用可直接使用，且所有非保留字都会自动转换成小写，所以非保留字不区分大小写。保留关键字需使用反引号标注方可使用，例如 `AND`。

nebula> CREATE TAG TAG(name string);
[ERROR (-7)]: SyntaxError: syntax error near `TAG'

nebula> CREATE TAG SPACE(name string); -- SPACE 为非保留关键字
Execution succeeded

nebula> SHOW TAGS; -- 所有非保留字都会自动转换成小写
=============
| ID | Name |
=============
| 25 | space|
-------------

TAG 为保留字使用时必须使用反引号。 SPACE 为非保留字使用时无需加反引号。

nebula> CREATE TAG `TAG` (name string); -- 此处 TAG 为保留字
Execution succeeded

保留字Graph

以下列表为 nGQL 中的保留字。

ADD
ALTER
AND
AS
ASC
BALANCE
BIGINT
BOOL
BY
CHANGE
COMPACT
CREATE
DELETE
DESC
DESCRIBE
DISTINCT
DOUBLE
DOWNLOAD
DROP
EDGE
EDGES
EXISTS
FETCH
FIND
FLUSH
FROM
GET
GO
GRANT
IF
IN
INDEX
INDEXES
INGEST
INSERT
INT
INTERSECT
IS
LIMIT
LOOKUP
MATCH
MINUS
NO
NOT
NULL
OF
OFFSET
ON
OR
ORDER
OVER
OVERWRITE
PROP
REBUILD
RECOVER
REMOVE
RETURN
REVERSELY
REVOKE
SET
SHOW
STEPS
STOP
STRING
SUBMIT
TAG
TAGS
TIMESTAMP
TO
UNION
UPDATE
UPSERT
UPTO
USE
VERTEX
WHEN
WHERE
WITH
XOR
YIELD

非保留关键字Graph

ACCOUNT
ADMIN
ALL
AVG
BIDIRECT
BIT_AND
BIT_OR
BIT_XOR
CHARSET
COLLATE
COLLATION
CONFIGS
COUNT
COUNT_DISTINCT
DATA
DBA
DEFAULT
FORCE
GOD
GRAPH
GROUP
GUEST
HDFS
HOSTS
JOB
JOBS
LEADER
MAX
META
MIN
OFFLINE
PART
PARTITION_NUM
PARTS
PASSWORD
PATH
REPLICA_FACTOR
ROLE
ROLES
SHORTEST
SNAPSHOT
SNAPSHOTS
SPACE
SPACES
STATUS
STD
STORAGE
SUM
TTL_COL
TTL_DURATION
USER
USERS
UUID
VALUES

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最后更新: April 29, 2020