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留存|Excel的八大函数

  • 2026-11-04 10:53:49
留存|Excel的八大函数

转载:小鱼的数学笔记公众号，目的用于日常学习。

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Excel VLOOKUP函数详解:从入门到避坑完整指南

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-09 18:16:23 HTTP/1.1 GET : http://h.sjds.net/a/497749.html
  2. 运行时间 : 0.089948s [ 吞吐率：11.12req/s ] 内存消耗：4,387.95kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=f0b94dd570abb66cd72dd64e2090dbba
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  1. CONNECT:[ UseTime:0.000726s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001028s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000435s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000416s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000548s ]
  6. SELECT * FROM `set` [ RunTime:0.000286s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000656s ]
  8. SELECT * FROM `article` WHERE `id` = 497749 LIMIT 1 [ RunTime:0.000395s ]
  9. UPDATE `article` SET `lasttime` = 1794219383 WHERE `id` = 497749 [ RunTime:0.001361s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000332s ]
  11. SELECT * FROM `article` WHERE `id` < 497749 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000441s ]
  12. SELECT * FROM `article` WHERE `id` > 497749 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000361s ]
  13. SELECT * FROM `article` WHERE `id` < 497749 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000571s ]
  14. SELECT * FROM `article` WHERE `id` < 497749 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000602s ]
  15. SELECT * FROM `article` WHERE `id` < 497749 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000579s ]
0.099933s