预留关键字
下表列出了openLooKeng中预留的所有关键字，以及它们在SQL标准中的状态。这些预留的关键字必须加引号（使用双引号），以便用作标识符。
| 关键字 | SQL:2016 | SQL-92 |
|---|---|---|
ALTER | 预留 | 预留 |
AND | 预留 | 预留 |
AS | 预留 | 预留 |
BETWEEN | 预留 | 预留 |
BY | 预留 | 预留 |
CASE | 预留 | 预留 |
CACHE | ||
CAST | 预留 | 预留 |
CONSTRAINT | 预留 | 预留 |
CREATE | 预留 | 预留 |
CROSS | 预留 | 预留 |
CUBE | 预留 | |
CURRENT_DATE | 预留 | 预留 |
CURRENT_PATH | 预留 | |
CURRENT_ROLE | 预留 | 预留 |
CURRENT_TIME | 预留 | 预留 |
CURRENT_TIMESTAMP | 预留 | 预留 |
CURRENT_USER | 预留 | |
DEALLOCATE | 预留 | 预留 |
DELETE | 预留 | 预留 |
DESCRIBE | 预留 | 预留 |
DISTINCT | 预留 | 预留 |
DROP | 预留 | 预留 |
ELSE | 预留 | 预留 |
END | 预留 | 预留 |
ESCAPE | 预留 | 预留 |
EXCEPT | 预留 | 预留 |
EXECUTE | 预留 | 预留 |
EXISTS | 预留 | 预留 |
EXTRACT | 预留 | 预留 |
FALSE | 预留 | 预留 |
FOR | 预留 | 预留 |
FROM | 预留 | 预留 |
FULL | 预留 | 预留 |
GROUP | 预留 | 预留 |
GROUPING | 预留 | |
HAVING | 预留 | 预留 |
IN | 预留 | 预留 |
INNER | 预留 | 预留 |
INSERT | 预留 | 预留 |
INTERSECT | 预留 | 预留 |
INTO | 预留 | 预留 |
IS | 预留 | 预留 |
JOIN | 预留 | 预留 |
LEFT | 预留 | 预留 |
LIKE | 预留 | 预留 |
LOCALTIME | 预留 | |
LOCALTIMESTAMP | 预留 | |
NATURAL | 预留 | 预留 |
NORMALIZE | 预留 | |
NOT | 预留 | 预留 |
NULL | 预留 | 预留 |
ON | 预留 | 预留 |
OR | 预留 | 预留 |
ORDER | 预留 | 预留 |
OUTER | 预留 | 预留 |
OVERWRITE | 预留 | |
PREPARE | 预留 | 预留 |
RECURSIVE | 预留 | |
RIGHT | 预留 | 预留 |
ROLLUP | 预留 | |
SELECT | 预留 | 预留 |
TABLE | 预留 | 预留 |
THEN | 预留 | 预留 |
TRUE | 预留 | 预留 |
UESCAPE | 预留 | |
UNION | 预留 | 预留 |
UNNEST | 预留 | |
UPDATE | 预留 | |
USING | 预留 | 预留 |
VALUES | 预留 | 预留 |
VACUUM | ||
WHEN | 预留 | 预留 |
WHERE | 预留 | 预留 |
WITH | 预留 | 预留 |
