are allowed to be present as column labels, but not as identifiers:

<programlisting>

CASE COALESCE CROSS CURRENT

CASE COALESCE CROSS CURRENT CURRENT_USER

DEC DECIMAL

ELSE END

FALSE FOREIGN

GLOBAL GROUP

LOCAL

NULLIF

NULLIF NUMERIC

ORDER

POSITION PRECISION

SESSION_USER

TABLE THEN TRANSACTION TRUE

USER

WHEN

</programlisting>

BEGIN BETWEEN BOTH BY

CASCADE CAST CHAR CHARACTER CHECK CLOSE

COLLATE COLUMN COMMIT CONSTRAINT CREATE

CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMPCURRENT_USER

CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP

CURSOR

DECIMALDECLARE DEFAULT DELETE DESC DISTINCT DROP

DECLARE DEFAULT DELETE DESC DISTINCT DROP

EXECUTE EXISTS EXTRACT

FETCH FLOAT FOR FROM FULL

GRANT

HAVING

IN INNER INSERT INTERVAL INTO IS

JOIN

LEADING LEFT LIKE LOCAL

NAMES NATIONAL NATURAL NCHAR NO NOT NULLNUMERIC

NAMES NATIONAL NATURAL NCHAR NO NOT NULL

ON OR OUTER

PARTIAL PRIMARY PRIVILEGES PROCEDURE PUBLIC

REFERENCES REVOKE RIGHT ROLLBACK

SELECT SET SUBSTRING

TO TRAILING TRIM

UNION UNIQUE UPDATEUSERUSING

UNION UNIQUE UPDATE USING

VALUES VARCHAR VARYING VIEW

WHERE WITH WORK

</programlisting>

CONTINUE CONVERT CORRESPONDING COUNT

DATE DEALLOCATE DEC DESCRIBE DESCRIPTOR

DIAGNOSTICS DISCONNECT DOMAIN

END-EXECESCAPE EXCEPT EXCEPTION EXEC EXTERNAL

ESCAPE EXCEPT EXCEPTION EXEC EXTERNAL

FIRST FOUND

GET GO GOTO

IDENTITY INDICATOR INPUT INTERSECT

OCTET_LENGTH OPEN OUTPUT OVERLAPS

PREPARE PRESERVE

ROWS

SCHEMA SECTION SESSIONSESSION_USERSIZE SOME

SCHEMA SECTION SESSION SIZE SOME

SQL SQLCODE SQLERROR SQLSTATE SUM SYSTEM_USER

TEMPORARY TRANSLATE TRANSLATION

UNKNOWN UPPER USAGE