MySQL显示值为NULL或在（2,3）中的行

我正试图询问他们的团队在15、9、25、26、23、18、12和空区。问题是查询没有检索空记录

我已尝试使用或

团队为空

查询提供了所有其他状态

SELECT e.*,
FROM enquiries e
WHERE e.timestamp BETWEEN '1293840000' AND '1469055599'
  AND e.status IN(1) AND e.team IN(15, 9, 25, 26, 23, 18, 12, NULL)
ORDER BY e.timestamp ASC

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请将任何帮助置于括号中

SELECT e.*,
FROM enquiries e
WHERE e.timestamp BETWEEN '1293840000' AND '1469055599'
AND e.status IN(1) AND ( e.team IN (15, 9, 25, 26, 23, 18, 12) OR e.team IS NULL)
ORDER BY e.timestamp ASC