注意
ISO 标准保留关键字有时可能比 SQL Server 限制更多，有时则更少。 例如，ISO 保留关键字列表包含 INT。 SQL Server 不必将此区分为保留关键字。
Transact-SQL 保留关键字可用作数据库或数据库对象（如表、列、视图等）的标识符或名称。 使用带引号的标识符或分隔标识符。 不限制将保留关键字用作变量和存储过程参数的名
ODBC 保留关键字
保留了下列关键字以用于 ODBC 函数调用。这些关键字根本不约束 SQL 语法；然而，为确保与支持核心 SQL 语法的驱动程序兼容，应用程序应避免使用这些关键字。
下面是当前的 ODBC 保留关键字列表。
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
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