Les termes suivants ont une signification particulière dans DSQL Firebird. Certains d’entre eux sont également des mots réservés.
 
| !<
 | ^<
 | ^=
 | 
| ^>
 | ,
 | :=
 | 
| !=
 | !>
 | (
 | 
| )
 | <
 | <=
 | 
| <>
 | =
 | >
 | 
| >=
 | ||
 | ~<
 | 
| ~=
 | ~>
 | ABS
 | 
| ABSOLUTE
 | ACCENT
 | ACOS
 | 
| ACOSH
 | ACTION
 | ACTIVE
 | 
| ADD
 | ADMIN
 | AFTER
 | 
| ALL
 | ALTER
 | ALWAYS
 | 
| AND
 | ANY
 | AS
 | 
| ASC
 | ASCENDING
 | ASCII_CHAR
 | 
| ASCII_VAL
 | ASIN
 | ASINH
 | 
| AT
 | ATAN
 | ATAN2
 | 
| ATANH
 | AUTO
 | AUTONOMOUS
 | 
| AVG
 | BACKUP
 | BASE64_DECODE
 | 
| BASE64_ENCODE
 | BEFORE
 | BEGIN
 | 
| BETWEEN
 | BIGINT
 | BINARY
 | 
| BIND
 | BIN_AND
 | BIN_NOT
 | 
| BIN_OR
 | BIN_SHL
 | BIN_SHR
 | 
| BIN_XOR
 | BIT_LENGTH
 | BLOB
 | 
| BLOCK
 | BODY
 | BOOLEAN
 | 
| BOTH
 | BREAK
 | BY
 | 
| CALLER
 | CASCADE
 | CASE
 | 
| CAST
 | CEIL
 | CEILING
 | 
| CHAR
 | CHARACTER
 | CHARACTER_LENGTH
 | 
| CHAR_LENGTH
 | CHAR_TO_UUID
 | CHECK
 | 
| CLEAR
 | CLOSE
 | COALESCE
 | 
| COLLATE
 | COLLATION
 | COLUMN
 | 
| COMMENT
 | COMMIT
 | COMMITTED
 | 
| COMMON
 | COMPARE_DECFLOAT
 | COMPUTED
 | 
| CONDITIONAL
 | CONNECT
 | CONNECTIONS
 | 
| CONSISTENCY
 | CONSTRAINT
 | CONTAINING
 | 
| CONTINUE
 | CORR
 | COS
 | 
| COSH
 | COT
 | COUNT
 | 
| COUNTER
 | COVAR_POP
 | COVAR_SAMP
 | 
| CREATE
 | CROSS
 | CRYPT_HASH
 | 
| CSTRING
 | CTR_BIG_ENDIAN
 | CTR_LENGTH
 | 
| CTR_LITTLE_ENDIAN
 | CUME_DIST
 | CURRENT
 | 
| CURRENT_CONNECTION
 | CURRENT_DATE
 | CURRENT_ROLE
 | 
| CURRENT_TIME
 | CURRENT_TIMESTAMP
 | CURRENT_TRANSACTION
 | 
| CURRENT_USER
 | CURSOR
 | DATA
 | 
| DATABASE
 | DATE
 | DATEADD
 | 
| DATEDIFF
 | DAY
 | DDL
 | 
| DEC
 | DECFLOAT
 | DECIMAL
 | 
| DECLARE
 | DECODE
 | DECRYPT
 | 
| DEFAULT
 | DEFINER
 | DELETE
 | 
| DELETING
 | DENSE_RANK
 | DESC
 | 
| DESCENDING
 | DESCRIPTOR
 | DETERMINISTIC
 | 
| DIFFERENCE
 | DISABLE
 | DISCONNECT
 | 
| DISTINCT
 | DO
 | DOMAIN
 | 
| DOUBLE
 | DROP
 | ELSE
 | 
| ENABLE
 | ENCRYPT
 | END
 | 
| ENGINE
 | ENTRY_POINT
 | ESCAPE
 | 
| EXCEPTION
 | EXCESS
 | EXCLUDE
 | 
| EXECUTE
 | EXISTS
 | EXIT
 | 
| EXP
 | EXTENDED
 | EXTERNAL
 | 
| EXTRACT
 | FALSE
 | FETCH
 | 
| FILE
 | FILTER
 | FIRST
 | 
| FIRSTNAME
 | FIRST_DAY
 | FIRST_VALUE
 | 
| FLOAT
 | FLOOR
 | FOLLOWING
 | 
| FOR
 | FOREIGN
 | FREE_IT
 | 
| FROM
 | FULL
 | FUNCTION
 | 
| GDSCODE
 | GENERATED
 | GENERATOR
 | 
| GEN_ID
 | GEN_UUID
 | GLOBAL
 | 
| GRANT
 | GRANTED
 | GROUP
 | 
| HASH
 | HAVING
 | HEX_DECODE
 | 
| HEX_ENCODE
 | HOUR
 | IDENTITY
 | 
| IDLE
 | IF
 | IGNORE
 | 
| IIF
 | IN
 | INACTIVE
 | 
| INCLUDE
 | INCREMENT
 | INDEX
 | 
| INNER
 | INPUT_TYPE
 | INSENSITIVE
 | 
| INSERT
 | INSERTING
 | INT
 | 
| INT128
 | INTEGER
 | INTO
 | 
| INVOKER
 | IS
 | ISOLATION
 | 
| IV
 | JOIN
 | KEY
 | 
| LAG
 | LAST
 | LASTNAME
 | 
| LAST_DAY
 | LAST_VALUE
 | LATERAL
 | 
| LEAD
 | LEADING
 | LEAVE
 | 
| LEFT
 | LEGACY
 | LENGTH
 | 
| LEVEL
 | LIFETIME
 | LIKE
 | 
| LIMBO
 | LINGER
 | LIST
 | 
| LN
 | LOCAL
 | LOCALTIME
 | 
| LOCALTIMESTAMP
 | LOCK
 | LOCKED
 | 
| LOG
 | LOG10
 | LONG
 | 
| LOWER
 | LPAD
 | LPARAM
 | 
| MAKE_DBKEY
 | MANUAL
 | MAPPING
 | 
| MATCHED
 | MATCHING
 | MAX
 | 
| MAXVALUE
 | MERGE
 | MESSAGE
 | 
| MIDDLENAME
 | MILLISECOND
 | MIN
 | 
| MINUTE
 | MINVALUE
 | MOD
 | 
| MODE
 | MODULE_NAME
 | MONTH
 | 
| NAME
 | NAMES
 | NATIONAL
 | 
| NATIVE
 | NATURAL
 | NCHAR
 | 
| NEXT
 | NO
 | NORMALIZE_DECFLOAT
 | 
| NOT
 | NTH_VALUE
 | NTILE
 | 
| NULL
 | NULLIF
 | NULLS
 | 
| NUMBER
 | NUMERIC
 | OCTET_LENGTH
 | 
| OF
 | OFFSET
 | OLDEST
 | 
| ON
 | ONLY
 | OPEN
 | 
| OPTION
 | OR
 | ORDER
 | 
| OS_NAME
 | OTHERS
 | OUTER
 | 
| OUTPUT_TYPE
 | OVER
 | OVERFLOW
 | 
| OVERLAY
 | OVERRIDING
 | PACKAGE
 | 
| PAD
 | PAGE
 | PAGES
 | 
| PAGE_SIZE
 | PARAMETER
 | PARTITION
 | 
| PASSWORD
 | PERCENT_RANK
 | PI
 | 
| PLACING
 | PLAN
 | PLUGIN
 | 
| POOL
 | POSITION
 | POST_EVENT
 | 
| POWER
 | PRECEDING
 | PRECISION
 | 
| PRESERVE
 | PRIMARY
 | PRIOR
 | 
| PRIVILEGE
 | PRIVILEGES
 | PROCEDURE
 | 
| PROTECTED
 | PUBLICATION
 | QUANTIZE
 | 
| RAND
 | RANGE
 | RANK
 | 
| RDB$DB_KEY
 | RDB$ERROR
 | RDB$GET_CONTEXT
 | 
| RDB$GET_TRANSACTION_CN
 | RDB$RECORD_VERSION
 | RDB$ROLE_IN_USE
 | 
| RDB$SET_CONTEXT
 | RDB$SYSTEM_PRIVILEGE
 | READ
 | 
| REAL
 | RECORD_VERSION
 | RECREATE
 | 
| RECURSIVE
 | REFERENCES
 | REGR_AVGX
 | 
| REGR_AVGY
 | REGR_COUNT
 | REGR_INTERCEPT
 | 
| REGR_R2
 | REGR_SLOPE
 | REGR_SXX
 | 
| REGR_SXY
 | REGR_SYY
 | RELATIVE
 | 
| RELEASE
 | REPLACE
 | REQUESTS
 | 
| RESERV
 | RESERVING
 | RESET
 | 
| RESETTING
 | RESTART
 | RESTRICT
 | 
| RETAIN
 | RETURN
 | RETURNING
 | 
| RETURNING_VALUES
 | RETURNS
 | REVERSE
 | 
| REVOKE
 | RIGHT
 | ROLE
 | 
| ROLLBACK
 | ROUND
 | ROW
 | 
| ROWS
 | ROW_COUNT
 | ROW_NUMBER
 | 
| RPAD
 | RSA_DECRYPT
 | RSA_ENCRYPT
 | 
| RSA_PRIVATE
 | RSA_PUBLIC
 | RSA_SIGN_HASH
 | 
| RSA_VERIFY_HASH
 | SALT_LENGTH
 | SAVEPOINT
 | 
| SCALAR_ARRAY
 | SCHEMA
 | SCROLL
 | 
| SECOND
 | SECURITY
 | SEGMENT
 | 
| SELECT
 | SENSITIVE
 | SEQUENCE
 | 
| SERVERWIDE
 | SESSION
 | SET
 | 
| SHADOW
 | SHARED
 | SIGN
 | 
| SIGNATURE
 | SIMILAR
 | SIN
 | 
| SINGULAR
 | SINH
 | SIZE
 | 
| SKIP
 | SMALLINT
 | SNAPSHOT
 | 
| SOME
 | SORT
 | SOURCE
 | 
| SPACE
 | SQL
 | SQLCODE
 | 
| SQLSTATE
 | SQRT
 | STABILITY
 | 
| START
 | STARTING
 | STARTS
 | 
| STATEMENT
 | STATISTICS
 | STDDEV_POP
 | 
| STDDEV_SAMP
 | SUBSTRING
 | SUB_TYPE
 | 
| SUM
 | SUSPEND
 | SYSTEM
 | 
| TABLE
 | TAGS
 | TAN
 | 
| TANH
 | TARGET
 | TEMPORARY
 | 
| THEN
 | TIES
 | TIME
 | 
| TIMEOUT
 | TIMESTAMP
 | TIMEZONE_HOUR
 | 
| TIMEZONE_MINUTE
 | TIMEZONE_NAME
 | TO
 | 
| TOTALORDER
 | TRAILING
 | TRANSACTION
 | 
| TRAPS
 | TRIGGER
 | TRIM
 | 
| TRUE
 | TRUNC
 | TRUSTED
 | 
| TWO_PHASE
 | TYPE
 | UNBOUNDED
 | 
| UNCOMMITTED
 | UNDO
 | UNICODE_CHAR
 | 
| UNICODE_VAL
 | UNION
 | UNIQUE
 | 
| UNKNOWN
 | UPDATE
 | UPDATING
 | 
| UPPER
 | USAGE
 | USER
 | 
| USING
 | UUID_TO_CHAR
 | VALUE
 | 
| VALUES
 | VARBINARY
 | VARCHAR
 | 
| VARIABLE
 | VARYING
 | VAR_POP
 | 
| VAR_SAMP
 | VIEW
 | WAIT
 | 
| WEEK
 | WEEKDAY
 | WHEN
 | 
| WHERE
 | WHILE
 | WINDOW
 | 
| WITH
 | WITHOUT
 | WORK
 | 
| WRITE
 | YEAR
 | YEARDAY
 |