大约有 40,000 项符合查询结果(耗时:0.0154秒) [XML]

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App Inventor 2 中文网 · 升级日志

...密码修改”功能全新上线!如遗忘初始密码,请联系客服重置。 优化 优化部分功能;部分文档翻译,新增 FileTools、 SimpleBase64、 MQTT、 ClientSocket 拓展文档及翻译。 230516 2023/05/16 优化 ...
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项目管理实践【四】Bug跟踪管理【Bug Trace and Management】 - 项目管理 -...

... http://www.cnblogs.com/idragonet/archive/2008/06/04/1213357.html [原创]如何在Windows下安装Bugfree2.0.0.1 http://www.cnblogs.com/mayingbao/archive/2008/09/09/1287523.html 缺陷管理工具bugfree安装说明 http://www.cnblogs.com/etian/archive/2008/06/05/1214588.html 三、Trac+Apa...
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INSERT with SELECT

I have a query that inserts using a select: 8 Answers 8 ...
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How to create a MySQL hierarchical recursive query

... or self-joins. MySQL 8+ with recursive cte (id, name, parent_id) as ( select id, name, parent_id from products where parent_id = 19 union all select p.id, p.name, p.parent_id from products p inner join cte ...
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App Inventor 2 如何连接MySQL数据库(阿里云数据库) · App Inventor 2 中文网

...馈 App Inventor 2 如何连接MySQL数据库(阿里云数据库) App Inventor 2 如何连接MySQL数据库 开发步骤 前端代码块 后端php代码 « 返回首页 ...
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How to get multiple counts with one SQL query?

...tion. This is basically the same thing as a PIVOT function in some RDBMS: SELECT distributor_id, count(*) AS total, sum(case when level = 'exec' then 1 else 0 end) AS ExecCount, sum(case when level = 'personal' then 1 else 0 end) AS PersonalCount FROM yourtable GROUP BY distributor_id ...
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T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]

...12)) RETURNS table AS RETURN ( WITH Pieces(pn, start, stop) AS ( SELECT 1, 1, CHARINDEX(@sep, @s) UNION ALL SELECT pn + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1) FROM Pieces WHERE stop > 0 ) SELECT pn, SUBSTRING(@s, start, CASE WHEN stop > 0 THE...
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淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...余度。 大量使用缓存的最大问题就是数据一致性问题。如何保证底层数据的变化在尽可能短的时间内体现给最终用户呢?这一定是一个系统化的工程,尤其对于分层较多的系统来说。 图9 缓存控制体系 图9向我们展示了数据...
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docker mounting volumes on host

...ontainer. Example: You have a Dockerfile that defines a VOLUME /var/lib/mysql. You build the docker image and tag it some-volume You run the container And then, You have another docker image that you want to use this volume You run the docker container with the following: docker run --volumes...
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MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...本信息,还包含了待机时间,外观设计等参数信息,应该如何存取数据呢? 如果使用MySQL的话,应该如何存取数据呢? 如果使用MySQL话,手机的基本信息单独是一个表,另外由于不同手机的参数信息差异很大,所以还需要一个...