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APA 7th
Zhuanfou Digital Technology (Shanghai) Co., Ltd. (2025, November 10). SQL中NULL值的比较操作符：深入解析!=和<>与IS NOT NULL的区别. DevGex. https://devgex.com/zh-CN/article/00006043
MLA 9th
Zhuanfou Digital Technology (Shanghai) Co., Ltd. "SQL中NULL值的比较操作符：深入解析!=和<>与IS NOT NULL的区别." DevGex, 10 Nov. 2025, https://devgex.com/zh-CN/article/00006043.
IEEE
Zhuanfou Digital Technology (Shanghai) Co., Ltd., "SQL中NULL值的比较操作符：深入解析!=和<>与IS NOT NULL的区别," DevGex, Programming, Nov 10, 2025. [Online]. Available: https://devgex.com/zh-CN/article/00006043
GB/T 7714—2015
Zhuanfou Digital Technology (Shanghai) Co., Ltd. SQL中NULL值的比较操作符：深入解析!=和<>与IS NOT NULL的区别: Programming[EB/OL]. 2025-11-10. https://devgex.com/zh-CN/article/00006043.