不好意思，这个题目并没有一个固定的答案。因为一天的时间长度是固定的，而秒钟的计量单位也是固定的，所以一天有24小时 x 60分钟 x 60秒 = 86400秒。但是如果我们考虑闰秒的存在，那么就得看具体的年份和当年是否有闰秒的增加了。所以，答案可能是86400秒，也可能是86401秒或者86402秒，甚至更多。
SHOW FULL COLUMNS FROM `tool_brainteaser` [ RunTime:0.002825s ]
SELECT `id`,`topic`,`answer` FROM `tool_brainteaser` WHERE `switch` = 1 AND `id` = 16691 LIMIT 1 [ RunTime:0.003529s ]
UPDATE `tool_brainteaser` SET `views` = `views` + 1 WHERE `id` = 16691 [ RunTime:0.006312s ]
SELECT `id`,`topic`,`answer` FROM `tool_brainteaser` WHERE `id` IN (18855,16805,14545,17779,8833,7102,3252,19755,13939,712,19621,9815,13031,14353,5707,18716,9570,615,3243,12919,17388,4647,2642,16677) AND `switch` = 1 ORDER BY `id` DESC [ RunTime:0.013357s ]
SELECT `id`,`topic` FROM `tool_brainteaser` WHERE `id` < 16691 AND `switch` = 1 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000661s ]
SELECT `id`,`topic` FROM `tool_brainteaser` WHERE `id` > 16691 AND `switch` = 1 ORDER BY `id` LIMIT 1 [ RunTime:0.003546s ]
热门工具排行榜
