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mba1398 2023-07-30 16:16:41 +08:00 committed by GitHub
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ch04:集合运算.md
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@ -173,7 +173,7 @@ SELECT SYSDATE(),SYSDATE(),SYSDATE()
UNION UNION
SELECT 'chars',123,null; SELECT 'chars',123,null;
``` ```
事实证明，以上代码可以正确执行，查询结果参考下图: 事实证明，以上代码可以正确执行，查询结果参考下图：
![图片](./img/ch04/ch04.08result5.png) ![图片](./img/ch04/ch04.08result5.png)