SQL Server 保留關鍵字
Microsoft SQL Server 2000 使用保留關鍵字定義、操作和訪問數據庫。保留關鍵字是 SQL Server 使用的 Transact-SQL 語言語法的一部分，用於分析和理解 Transact-SQL 語句和批處理。儘管在 Transact-SQL 腳本中，使用 SQL Server 保留關鍵字作爲標識符和對象名在語法上是可行的，但規定只能使用分隔標識符。
下表列出了 SQL Server 的保留關鍵字。
ADD
EXCEPT
PERCENT
ALL
EXEC
PLAN
ALTER
EXECUTE
PRECISION
AND
EXISTS
PRIMARY
ANY
EXIT
PRINT
AS
FETCH
PROC
ASC
FILE
PROCEDURE
AUTHORIZATION
FILLFACTOR
PUBLIC
BACKUP
FOR
RAISERROR
BEGIN
FOREIGN
READ
BETWEEN
FREETEXT
READTEXT
BREAK
FREETEXTTABLE
RECONFIGURE
BROWSE
FROM
REFERENCES
BULK
FULL
REPLICATION
BY
FUNCTION
RESTORE
CASCADE
GOTO
RESTRICT
CASE
GRANT
RETURN
CHECK
GROUP
REVOKE
CHECKPOINT
HAVING
RIGHT
CLOSE
HOLDLOCK
ROLLBACK
CLUSTERED
IDENTITY
ROWCOUNT
COALESCE
IDENTITY_INSERT
ROWGUIDCOL
COLLATE
IDENTITYCOL
RULE
COLUMN
IF
SAVE
COMMIT
IN
SCHEMA
COMPUTE
INDEX
SELECT
CONSTRAINT
INNER
SESSION_USER
CONTAINS
INSERT
SET
CONTAINSTABLE
INTERSECT
SETUSER
CONTINUE
INTO
SHUTDOWN
CONVERT
IS
SOME
CREATE
JOIN
STATISTICS
CROSS
KEY
SYSTEM_USER
CURRENT
KILL
TABLE
CURRENT_DATE
LEFT
TEXTSIZE
CURRENT_TIME
LIKE
THEN
CURRENT_TIMESTAMP
LINENO
TO
CURRENT_USER
LOAD
TOP
CURSOR
NATIONAL
TRAN
DATABASE
NOCHECK
TRANSACTION
DBCC
NONCLUSTERED
TRIGGER
DEALLOCATE
NOT
TRUNCATE
DECLARE
NULL
TSEQUAL
DEFAULT
NULLIF
UNION
DELETE
OF
UNIQUE
DENY
OFF
UPDATE
DESC
OFFSETS
UPDATETEXT
DISK
ON
USE
DISTINCT
OPEN
USER
DISTRIBUTED
OPENDATASOURCE
VALUES
DOUBLE
OPENQUERY
VARYING
DROP
OPENROWSET
VIEW
DUMMY
OPENXML
WAITFOR
DUMP
OPTION
WHEN
ELSE
OR
WHERE
END
ORDER
WHILE
ERRLVL
OUTER
WITH
ESCAPE
OVER
WRITETEXT
另外，SQL-92 標準還定義了保留關鍵字列表。不要使用 SQL-92 保留關鍵字作爲對象名和標識符。ODBC 保留關鍵字列表（如下所示）與 SQL-92 保留關鍵字列表相同。
說明??SQL-92 保留關鍵字列表有時可能比 SQL Server 限制更多，有時則限制更少。例如，SQL-92 保留關鍵字列表包含 INT，而 SQL Server 不需要將其區分爲保留關鍵字。
Transact-SQL 保留關鍵字可用作數據庫或數據庫對象（如表、列、視圖等）的標識符或名稱。使用被引用的標識符或分隔標識符。對將保留關鍵字用作變量和存儲過程參數的名稱沒有限制。
ODBC 保留關鍵字
保留了下列關鍵字用於 ODBC 函數調用。這些關鍵字根本不約束 SQL 語法；然而，爲確保與支持核心 SQL 語法的驅動程序兼容，應用程序應避免使用這些關鍵字。
下面是當前的 ODBC 保留關鍵字列表。有關更多信息，請參見《Microsoft ODBC 3.0 程序員參考》，第 2 卷，附錄 C。
ABSOLUTE
EXEC
OVERLAPS
ACTION
EXECUTE
PAD
ADA
EXISTS
PARTIAL
ADD
EXTERNAL
PASCAL
ALL
EXTRACT
POSITION
ALLOCATE
FALSE
PRECISION
ALTER
FETCH
PREPARE
AND
FIRST
PRESERVE
ANY
FLOAT
PRIMARY
ARE
FOR
PRIOR
AS
FOREIGN
PRIVILEGES
ASC
FORTRAN
PROCEDURE
ASSERTION
FOUND
PUBLIC
AT
FROM
READ
AUTHORIZATION
FULL
REAL
AVG
GET
REFERENCES
BEGIN
GLOBAL
RELATIVE
BETWEEN
GO
RESTRICT
BIT
GOTO
REVOKE
BIT_LENGTH
GRANT
RIGHT
BOTH
GROUP
ROLLBACK
BY
HAVING
ROWS
CASCADE
HOUR
SCHEMA
CASCADED
IDENTITY
SCROLL
CASE
IMMEDIATE
SECOND
CAST
IN
SECTION
CATALOG
INCLUDE
SELECT
CHAR
INDEX
SESSION
CHAR_LENGTH
INDICATOR
SESSION_USER
CHARACTER
INITIALLY
SET
CHARACTER_LENGTH
INNER
SIZE
CHECK
INPUT
SMALLINT
CLOSE
INSENSITIVE
SOME
COALESCE
INSERT
SPACE
COLLATE
INT
SQL
COLLATION
INTEGER
SQLCA
COLUMN
INTERSECT
SQLCODE
COMMIT
INTERVAL
SQLERROR
CONNECT
INTO
SQLSTATE
CONNECTION
IS
SQLWARNING
CONSTRAINT
ISOLATION
SUBSTRING
CONSTRAINTS
JOIN
SUM
CONTINUE
KEY
SYSTEM_USER
CONVERT
LANGUAGE
TABLE
CORRESPONDING
LAST
TEMPORARY
COUNT
LEADING
THEN
CREATE
LEFT
TIME
CROSS
LEVEL
TIMESTAMP
CURRENT
LIKE
TIMEZONE_HOUR
CURRENT_DATE
LOCAL
TIMEZONE_MINUTE
CURRENT_TIME
LOWER
TO
CURRENT_TIMESTAMP
MATCH
TRAILING
CURRENT_USER
MAX
TRANSACTION
CURSOR
MIN
TRANSLATE
DATE
MINUTE
TRANSLATION
DAY
MODULE
TRIM
DEALLOCATE
MONTH
TRUE
DEC
NAMES
UNION
DECIMAL
NATIONAL
UNIQUE
DECLARE
NATURAL
UNKNOWN
DEFAULT
NCHAR
UPDATE
DEFERRABLE
NEXT
UPPER
DEFERRED
NO
USAGE
DELETE
NONE
USER
DESC
NOT
USING
DESCRIBE
NULL
VALUE
DESCRIPTOR
NULLIF
VALUES
DIAGNOSTICS
NUMERIC
VARCHAR
DISCONNECT
OCTET_LENGTH
VARYING
DISTINCT
OF
VIEW
DOMAIN
ON
WHEN
DOUBLE
ONLY
WHENEVER
DROP
OPEN
WHERE
ELSE
OPTION
WITH
END
OR
WORK
END-EXEC
ORDER
WRITE
ESCAPE
OUTER
YEAR
EXCEPT
OUTPUT
ZONE
EXCEPTION