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4.1数列的概念(八):讲义p9,数列的递推公式

  • 2026-03-29 12:45:40
4.1数列的概念(八):讲义p9,数列的递推公式
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  1. CONNECT:[ UseTime:0.000538s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000520s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000307s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000275s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000610s ]
  6. SELECT * FROM `set` [ RunTime:0.000242s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000661s ]
  8. SELECT * FROM `article` WHERE `id` = 465297 LIMIT 1 [ RunTime:0.002102s ]
  9. UPDATE `article` SET `lasttime` = 1775810324 WHERE `id` = 465297 [ RunTime:0.007579s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000322s ]
  11. SELECT * FROM `article` WHERE `id` < 465297 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000633s ]
  12. SELECT * FROM `article` WHERE `id` > 465297 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000472s ]
  13. SELECT * FROM `article` WHERE `id` < 465297 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002672s ]
  14. SELECT * FROM `article` WHERE `id` < 465297 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017322s ]
  15. SELECT * FROM `article` WHERE `id` < 465297 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007668s ]
0.111710s