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关键字

关键字在nGQL中有重要意义,分为保留关键字和非保留关键字。

非保留关键字作为标识符时可以不使用引号。保留关键字作为标识符时,需要用反引号(`)将它们括起来,例如`AND`。

说明:关键字不区分大小写。

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

nebula> CREATE TAG `TAG` (name string);
Execution succeeded

nebula> CREATE TAG SPACE(name string);
Execution succeeded
  • TAG是保留关键字,要将TAG作为标识符,您必须使用反引号(`)括起来。
  • SPACE是非保留关键字,可以直接作为标识符使用。

保留关键字

ADD
ALTER
AND
AS
ASC
BALANCE
BOOL
BY
CASE
CHANGE
COMPACT
CREATE
DATE
DATETIME
DELETE
DESC
DESCRIBE
DISTINCT
DOUBLE
DOWNLOAD
DROP
EDGE
EDGES
EXISTS
EXPLAIN
FETCH
FIND
FIXED_STRING
FLOAT
FLUSH
FORMAT
FROM
GET
GO
GRANT
IF
IN
INDEX
INDEXES
INGEST
INSERT
INT
INT16
INT32
INT64
INT8
INTERSECT
IS
LIMIT
LOOKUP
MATCH
MINUS
NO
NOT
NULL
OF
OFFSET
ON
OR
ORDER
OVER
OVERWRITE
PROFILE
PROP
REBUILD
RECOVER
REMOVE
RETURN
REVERSELY
REVOKE
SET
SHOW
STEP
STEPS
STOP
STRING
SUBMIT
TAG
TAGS
TIME
TIMESTAMP
TO
UNION
UPDATE
UPSERT
UPTO
USE
VERTEX
WHEN
WHERE
WITH
XOR
YIELD

非保留关键字

ACCOUNT
ADMIN
ALL
ANY
ATOMIC_EDGE
AUTO
AVG
BIDIRECT
BIT_AND
BIT_OR
BIT_XOR
BOTH
CHARSET
CLIENTS
COLLATE
COLLATION
COLLECT
COLLECT_SET
CONFIGS
CONTAINS
COUNT
COUNT_DISTINCT
DATA
DBA
DEFAULT
ELASTICSEARCH
ELSE
END
ENDS
FALSE
FORCE
FUZZY
GOD
GRAPH
GROUP
GROUPS
GUEST
HDFS
HOST
HOSTS
INTO
JOB
JOBS
LEADER
LISTENER
MAX
META
MIN
NOLOOP
NONE
OPTIONAL
OUT
PART
PARTITION_NUM
PARTS
PASSWORD
PATH
PLAN
PREFIX
REGEXP
REPLICA_FACTOR
RESET
ROLE
ROLES
SEARCH
SERVICE
SHORTEST
SIGN
SINGLE
SKIP
SNAPSHOT
SNAPSHOTS
SPACE
SPACES
STARTS
STATS
STATUS
STD
STORAGE
SUBGRAPH
SUM
TEXT
TEXT_SEARCH
THEN
TRUE
TTL_COL
TTL_DURATION
UNWIND
USER
USERS
UUID
VALUE
VALUES
VID_TYPE
WILDCARD
ZONE
ZONES

最后更新: 2021年4月6日