356 lines
3.1 KiB
Markdown
356 lines
3.1 KiB
Markdown
---
|
|
title: Reserved Keywords
|
|
sidebar_label: Reserved Keywords
|
|
description: This document describes the reserved keywords in TDengine that cannot be used in object names.
|
|
---
|
|
|
|
## Keyword List
|
|
|
|
There are more than 200 keywords reserved by TDengine, they can't be used as the name of database, table, STable, subtable, column or tag with either upper case, lower case or mixed case. If you need to use these keywords, use the symbol `` ` `` to enclose the keywords, e.g. \`ADD\`.
|
|
|
|
The following list shows all reserved keywords:
|
|
|
|
### A
|
|
|
|
- ABORT
|
|
- ACCOUNT
|
|
- ACCOUNTS
|
|
- ADD
|
|
- AFTER
|
|
- AGGREGATE
|
|
- ALIVE
|
|
- ALL
|
|
- ALTER
|
|
- ANALYZE
|
|
- AND
|
|
- APPS
|
|
- AS
|
|
- ASC
|
|
- AT_ONCE
|
|
- ATTACH
|
|
|
|
### B
|
|
|
|
- BALANCE
|
|
- BEFORE
|
|
- BEGIN
|
|
- BETWEEN
|
|
- BIGINT
|
|
- BINARY
|
|
- BITAND
|
|
- BITNOT
|
|
- BITOR
|
|
- BLOCKS
|
|
- BNODE
|
|
- BNODES
|
|
- BOOL
|
|
- BUFFER
|
|
- BUFSIZE
|
|
- BY
|
|
|
|
### C
|
|
|
|
- CACHE
|
|
- CACHEMODEL
|
|
- CACHESIZE
|
|
- CASCADE
|
|
- CAST
|
|
- CHANGE
|
|
- CLIENT_VERSION
|
|
- CLUSTER
|
|
- COLON
|
|
- COLUMN
|
|
- COMMA
|
|
- COMMENT
|
|
- COMP
|
|
- COMPACT
|
|
- CONCAT
|
|
- CONFLICT
|
|
- CONNECTION
|
|
- CONNECTIONS
|
|
- CONNS
|
|
- CONSUMER
|
|
- CONSUMERS
|
|
- CONTAINS
|
|
- COPY
|
|
- COUNT
|
|
- CREATE
|
|
- CURRENT_USER
|
|
|
|
### D
|
|
|
|
- DATABASE
|
|
- DATABASES
|
|
- DBS
|
|
- DEFERRED
|
|
- DELETE
|
|
- DELIMITERS
|
|
- DESC
|
|
- DESCRIBE
|
|
- DETACH
|
|
- DISTINCT
|
|
- DISTRIBUTED
|
|
- DIVIDE
|
|
- DNODE
|
|
- DNODES
|
|
- DOT
|
|
- DOUBLE
|
|
- DROP
|
|
- DURATION
|
|
|
|
### E
|
|
|
|
- EACH
|
|
- ENABLE
|
|
- END
|
|
- EVERY
|
|
- EXISTS
|
|
- EXPIRED
|
|
- EXPLAIN
|
|
|
|
### F
|
|
|
|
- FAIL
|
|
- FILE
|
|
- FILL
|
|
- FIRST
|
|
- FLOAT
|
|
- FLUSH
|
|
- FOR
|
|
- FROM
|
|
- FUNCTION
|
|
- FUNCTIONS
|
|
|
|
### G
|
|
|
|
- GLOB
|
|
- GRANT
|
|
- GRANTS
|
|
- GROUP
|
|
|
|
### H
|
|
|
|
- HAVING
|
|
|
|
### I
|
|
|
|
- ID
|
|
- IF
|
|
- IGNORE
|
|
- IMMEDIATE
|
|
- IMPORT
|
|
- IN
|
|
- INDEX
|
|
- INDEXES
|
|
- INITIALLY
|
|
- INNER
|
|
- INSERT
|
|
- INSTEAD
|
|
- INT
|
|
- INTEGER
|
|
- INTERVAL
|
|
- INTO
|
|
- IS
|
|
- ISNULL
|
|
|
|
### J
|
|
|
|
- JOIN
|
|
- JSON
|
|
|
|
### K
|
|
|
|
- KEEP
|
|
- KEY
|
|
- KILL
|
|
|
|
### L
|
|
|
|
- LAST
|
|
- LAST_ROW
|
|
- LICENCES
|
|
- LIKE
|
|
- LIMIT
|
|
- LINEAR
|
|
- LOCAL
|
|
|
|
### M
|
|
|
|
- MATCH
|
|
- MAX_DELAY
|
|
- BWLIMIT
|
|
- MAXROWS
|
|
- MAX_SPEED
|
|
- MERGE
|
|
- META
|
|
- MINROWS
|
|
- MINUS
|
|
- MNODE
|
|
- MNODES
|
|
- MODIFY
|
|
- MODULES
|
|
|
|
### N
|
|
|
|
- NCHAR
|
|
- NEXT
|
|
- NMATCH
|
|
- NONE
|
|
- NOT
|
|
- NOTNULL
|
|
- NOW
|
|
- NULL
|
|
- NULLS
|
|
|
|
### O
|
|
|
|
- OF
|
|
- OFFSET
|
|
- ON
|
|
- OR
|
|
- ORDER
|
|
- OUTPUTTYPE
|
|
|
|
### P
|
|
|
|
- PAGES
|
|
- PAGESIZE
|
|
- PARTITIONS
|
|
- PASS
|
|
- PLUS
|
|
- PORT
|
|
- PPS
|
|
- PRECISION
|
|
- PREV
|
|
- PRIVILEGE
|
|
|
|
### Q
|
|
|
|
- QNODE
|
|
- QNODES
|
|
- QTIME
|
|
- QUERIES
|
|
- QUERY
|
|
|
|
### R
|
|
|
|
- RAISE
|
|
- RANGE
|
|
- RATIO
|
|
- READ
|
|
- REDISTRIBUTE
|
|
- RENAME
|
|
- REPLACE
|
|
- REPLICA
|
|
- RESET
|
|
- RESTRICT
|
|
- RETENTIONS
|
|
- REVOKE
|
|
- ROLLUP
|
|
- ROW
|
|
|
|
### S
|
|
|
|
- SCHEMALESS
|
|
- SCORES
|
|
- SELECT
|
|
- SEMI
|
|
- SERVER_STATUS
|
|
- SERVER_VERSION
|
|
- SESSION
|
|
- SET
|
|
- SHOW
|
|
- SINGLE_STABLE
|
|
- SLIDING
|
|
- SLIMIT
|
|
- SMA
|
|
- SMALLINT
|
|
- SNODE
|
|
- SNODES
|
|
- SOFFSET
|
|
- SPLIT
|
|
- STABLE
|
|
- STABLES
|
|
- STAR
|
|
- STATE
|
|
- STATE_WINDOW
|
|
- STATEMENT
|
|
- STORAGE
|
|
- STREAM
|
|
- STREAMS
|
|
- STRICT
|
|
- STRING
|
|
- SUBSCRIPTIONS
|
|
- SYNCDB
|
|
- SYSINFO
|
|
|
|
### T
|
|
|
|
- TABLE
|
|
- TABLES
|
|
- TAG
|
|
- TAGS
|
|
- TBNAME
|
|
- TIMES
|
|
- TIMESTAMP
|
|
- TIMEZONE
|
|
- TINYINT
|
|
- TO
|
|
- TODAY
|
|
- TOPIC
|
|
- TOPICS
|
|
- TRANSACTION
|
|
- TRANSACTIONS
|
|
- TRIGGER
|
|
- TRIM
|
|
- TSERIES
|
|
- TTL
|
|
|
|
### U
|
|
|
|
- UNION
|
|
- UNSIGNED
|
|
- UPDATE
|
|
- USE
|
|
- USER
|
|
- USERS
|
|
- USING
|
|
|
|
### V
|
|
|
|
- VALUE
|
|
- VALUES
|
|
- VARCHAR
|
|
- VARIABLE
|
|
- VARIABLES
|
|
- VERBOSE
|
|
- VGROUP
|
|
- VGROUPS
|
|
- VIEW
|
|
- VNODES
|
|
|
|
### W
|
|
|
|
- WAL
|
|
- WAL_FSYNC_PERIOD
|
|
- WAL_LEVEL
|
|
- WAL_RETENTION_PERIOD
|
|
- WAL_RETENTION_SIZE
|
|
- WATERMARK
|
|
- WHERE
|
|
- WINDOW_CLOSE
|
|
- WITH
|
|
- WRITE
|
|
|
|
### \_
|
|
|
|
- \_C0
|
|
- \_IROWTS
|
|
- \_QDURATION
|
|
- \_QEND
|
|
- \_QSTART
|
|
- \_ROWTS
|
|
- \_WDURATION
|
|
- \_WEND
|
|
- \_WSTART
|