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【讲座讲义】程磊老师讲导数小题中构造函数的技巧

  • 2026-10-20 07:54:39
【讲座讲义】程磊老师讲导数小题中构造函数的技巧
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导数小题中构造函数的技巧
郑州 程磊 QQ:591755402

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高中数学解题研究会总第64期

本期编辑：湖南 林桧

本期校对：福建 谢晓

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基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000834s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000999s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000434s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000345s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000619s ]
  6. SELECT * FROM `set` [ RunTime:0.000327s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000706s ]
  8. SELECT * FROM `article` WHERE `id` = 457930 LIMIT 1 [ RunTime:0.000347s ]
  9. UPDATE `article` SET `lasttime` = 1794192910 WHERE `id` = 457930 [ RunTime:0.001978s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000367s ]
  11. SELECT * FROM `article` WHERE `id` < 457930 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000423s ]
  12. SELECT * FROM `article` WHERE `id` > 457930 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000440s ]
  13. SELECT * FROM `article` WHERE `id` < 457930 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000496s ]
  14. SELECT * FROM `article` WHERE `id` < 457930 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000718s ]
  15. SELECT * FROM `article` WHERE `id` < 457930 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000674s ]
0.087959s