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Excel每日一练:sum函数求和为什么是0【有讲解视频】

  • 2026-09-24 08:57:19
Excel每日一练:sum函数求和为什么是0【有讲解视频】

今天我们来解决：sum函数求和为什么是0的问题。

请查找分析为什么SUM函数求和是0，原因是什么，如何解决。

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Excel每日一练:choosecols+filter函数嵌套【有讲解视频】

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-09-24 10:11:19 HTTP/1.1 GET : http://h.sjds.net/a/555170.html
  2. 运行时间 : 0.080540s [ 吞吐率：12.42req/s ] 内存消耗：4,327.48kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=78559d6008dd5273eb511d879ed7b5a1
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  1. CONNECT:[ UseTime:0.000449s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000740s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000389s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000388s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000601s ]
  6. SELECT * FROM `set` [ RunTime:0.000336s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000601s ]
  8. SELECT * FROM `article` WHERE `id` = 555170 LIMIT 1 [ RunTime:0.000353s ]
  9. UPDATE `article` SET `lasttime` = 1790215879 WHERE `id` = 555170 [ RunTime:0.000934s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000275s ]
  11. SELECT * FROM `article` WHERE `id` < 555170 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000372s ]
  12. SELECT * FROM `article` WHERE `id` > 555170 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000384s ]
  13. SELECT * FROM `article` WHERE `id` < 555170 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000495s ]
  14. SELECT * FROM `article` WHERE `id` < 555170 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000638s ]
  15. SELECT * FROM `article` WHERE `id` < 555170 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000563s ]
0.091395s