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函数课程(上)讲义

  • 2026-10-26 12:18:22
函数课程(上)讲义

函数（上）

函数总复习课程b站已更新上半部分

课程可以直接在b站查看

个人b站账号：佟大大是ETT

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基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000669s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001021s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000471s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000346s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000515s ]
  6. SELECT * FROM `set` [ RunTime:0.000287s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000643s ]
  8. SELECT * FROM `article` WHERE `id` = 457721 LIMIT 1 [ RunTime:0.000326s ]
  9. UPDATE `article` SET `lasttime` = 1794196883 WHERE `id` = 457721 [ RunTime:0.001490s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000296s ]
  11. SELECT * FROM `article` WHERE `id` < 457721 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000452s ]
  12. SELECT * FROM `article` WHERE `id` > 457721 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000339s ]
  13. SELECT * FROM `article` WHERE `id` < 457721 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000716s ]
  14. SELECT * FROM `article` WHERE `id` < 457721 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000596s ]
  15. SELECT * FROM `article` WHERE `id` < 457721 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000564s ]
0.085801s