https://blog.youkuaiyun.com/szdblzh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/szdbl/article/details/129653158https://blog.youkuaiyun.com/szdbl/article/details/129653158szdblSun, 19 Mar 2023 17:27:17 +0800https://blog.youkuaiyun.com/szdbl/article/details/104998546https://blog.youkuaiyun.com/szdbl/article/details/104998546szdblMon, 23 Mar 2020 15:19:35 +0800https://blog.youkuaiyun.com/szdbl/article/details/104959988https://blog.youkuaiyun.com/szdbl/article/details/104959988szdblThu, 19 Mar 2020 20:56:31 +0800https://blog.youkuaiyun.com/szdbl/article/details/104964054https://blog.youkuaiyun.com/szdbl/article/details/104964054szdblThu, 19 Mar 2020 12:38:42 +0800https://blog.youkuaiyun.com/szdbl/article/details/89188933https://blog.youkuaiyun.com/szdbl/article/details/89188933szdblWed, 10 Apr 2019 17:28:56 +0800https://blog.youkuaiyun.com/szdbl/article/details/48548671https://blog.youkuaiyun.com/szdbl/article/details/48548671szdblFri, 18 Sep 2015 16:41:24 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547679https://blog.youkuaiyun.com/szdbl/article/details/48547679szdblFri, 18 Sep 2015 15:48:22 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547677https://blog.youkuaiyun.com/szdbl/article/details/48547677szdblFri, 18 Sep 2015 15:48:19 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547675https://blog.youkuaiyun.com/szdbl/article/details/48547675szdblFri, 18 Sep 2015 15:48:17 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547673https://blog.youkuaiyun.com/szdbl/article/details/48547673szdblFri, 18 Sep 2015 15:48:14 +0800 语法: length(string A)   返回值: int   说明：返回字符串A的长度   举例：   hive> select length(‘abcedfg’) from dual;  ]]>https://blog.youkuaiyun.com/szdbl/article/details/48547671https://blog.youkuaiyun.com/szdbl/article/details/48547671szdblFri, 18 Sep 2015 15:48:12 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547669https://blog.youkuaiyun.com/szdbl/article/details/48547669szdblFri, 18 Sep 2015 15:48:09 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547667https://blog.youkuaiyun.com/szdbl/article/details/48547667szdblFri, 18 Sep 2015 15:48:07 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547663https://blog.youkuaiyun.com/szdbl/article/details/48547663szdblFri, 18 Sep 2015 15:48:04 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547661https://blog.youkuaiyun.com/szdbl/article/details/48547661szdblFri, 18 Sep 2015 15:48:02 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547659https://blog.youkuaiyun.com/szdbl/article/details/48547659szdblFri, 18 Sep 2015 15:47:59 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547655https://blog.youkuaiyun.com/szdbl/article/details/48547655szdblFri, 18 Sep 2015 15:47:56 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547651https://blog.youkuaiyun.com/szdbl/article/details/48547651szdblFri, 18 Sep 2015 15:47:54 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547647https://blog.youkuaiyun.com/szdbl/article/details/48547647szdblFri, 18 Sep 2015 15:47:52 +0800https://blog.youkuaiyun.com/szdbl/article/details/48547645https://blog.youkuaiyun.com/szdbl/article/details/48547645szdblFri, 18 Sep 2015 15:47:49 +0800 不少媒体新闻大呼抢票工具集体失效、12306终极验证码等新闻，这种验证码的推出有好同样也有坏处：机器识别困难，同样人眼识别也轻松不到哪里去。 用这种方式作为验证码最大的担忧就是怕脚本或人工对其图片进]]>