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AP&AL 经济知识点总结:成本&利润

  • 2026-11-02 22:31:43
AP&AL 经济知识点总结:成本&利润

大家好，今天聊的是 AP 与 Alevel 经济都会考到的一个知识点：成本与利润部分的分析，具体内容大家可以看图片。

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基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.001198s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000848s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000443s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000514s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000502s ]
  6. SELECT * FROM `set` [ RunTime:0.000264s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000663s ]
  8. SELECT * FROM `article` WHERE `id` = 532546 LIMIT 1 [ RunTime:0.000348s ]
  9. UPDATE `article` SET `lasttime` = 1793636152 WHERE `id` = 532546 [ RunTime:0.001719s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000328s ]
  11. SELECT * FROM `article` WHERE `id` < 532546 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000434s ]
  12. SELECT * FROM `article` WHERE `id` > 532546 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000369s ]
  13. SELECT * FROM `article` WHERE `id` < 532546 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000552s ]
  14. SELECT * FROM `article` WHERE `id` < 532546 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000548s ]
  15. SELECT * FROM `article` WHERE `id` < 532546 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000674s ]
0.088691s