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【期中复习】四年级上册1—4单元课后习题参考答案

  • 2026-10-18 01:48:59
【期中复习】四年级上册1—4单元课后习题参考答案

期中复习

课后习题

1—4答案详解

四年级上册

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  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=e38253cec98387786159f3f77481a748
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  1. CONNECT:[ UseTime:0.000525s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000771s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000406s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000340s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000518s ]
  6. SELECT * FROM `set` [ RunTime:0.000282s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000677s ]
  8. SELECT * FROM `article` WHERE `id` = 524309 LIMIT 1 [ RunTime:0.000368s ]
  9. UPDATE `article` SET `lasttime` = 1792296980 WHERE `id` = 524309 [ RunTime:0.001548s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000315s ]
  11. SELECT * FROM `article` WHERE `id` < 524309 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000407s ]
  12. SELECT * FROM `article` WHERE `id` > 524309 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000368s ]
  13. SELECT * FROM `article` WHERE `id` < 524309 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000519s ]
  14. SELECT * FROM `article` WHERE `id` < 524309 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000526s ]
  15. SELECT * FROM `article` WHERE `id` < 524309 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000575s ]
0.080273s