大约有 19,000 项符合查询结果(耗时:0.0363秒) [XML]

https://www.tsingfun.com/it/pr... 

【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术

...、主观题(四选二) 1、最近大数据非常的火热,而请问如何利用大数据与搜索引擎结合,为用户提供更好的产品或服务。 大致答案构成:将大数据分为几个类型,向不同的用户提供不同的类型组合构成新的产品或者服务。 ...
https://stackoverflow.com/ques... 

How to select records from last 24 hours using SQL?

... In MySQL: SELECT * FROM mytable WHERE record_date >= NOW() - INTERVAL 1 DAY In SQL Server: SELECT * FROM mytable WHERE record_date >= DATEADD(day, -1, GETDATE()) In Oracle: SELECT * FROM mytable WHER...
https://stackoverflow.com/ques... 

MySQL: Can't create table (errno: 150)

... From the MySQL - FOREIGN KEY Constraints Documentation: If you re-create a table that was dropped, it must have a definition that conforms to the foreign key constraints referencing it. It must have the correct column names and ty...
https://www.tsingfun.com/ilife/tech/1001.html 

大数据时代的数据化运营 - 资讯 - 清泛网 - 专注C/C++及内核技术

...响。今天我们采访到了中清龙图副总裁李翀为广大cp讲解如何在大数据时代进行数据运营。 什么是大数据? 大数据第一个特点是数据量特别大,举个例子,比如一个人站在这里,仅知道他的身高体重等等,是没有什么实际意义...
https://www.tsingfun.com/it/tech/1403.html 

领域驱动设计系列(五):事件驱动之异步事件 - 更多技术 - 清泛网 - 专注C/...

...以。 另外,异步要处理的东西很多,比如处理完毕后,如何通知用户,还是让用户刷新? 我个人建议,一般情况下都不要用异步,只有在真的需要的时候再用。 作者: 王德水 出处:http://deshui.wang 领域驱动设计 DDD 事件驱...
https://www.tsingfun.com/ilife/life/1647.html 

致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术

...落的“过来人”,还是想写点东西给“年轻人”。 关于如何成长? 我直白的答案还是建议通过实践,通过项目来成长。虽然提倡多参加项目,但项目不能是乱七八糟的项目什么都去尝试做,对于刚工作的同学,希望做这两类...
https://stackoverflow.com/ques... 

How to add a primary key to a MySQL table?

... mysql doesn't recognize MODIFY as proper statement(at least in XAMPP, InnoDB) – LMD Jul 13 '18 at 18:25 ...
https://stackoverflow.com/ques... 

How to refer to relative paths of resources when working with a code repository

.... How do you solve it when you have the following tree structure: /Project_Root_dir /python_files_dir /Some more subdirs here py_file.py /resources /some subdirs here resource_file.csv – olamundo Aug 14 '09 at 12...
https://stackoverflow.com/ques... 

Best way to make Django's login_required the default

... Simply check each view function. import os import re def view_modules( root ): for path, dirs, files in os.walk( root ): for d in dirs[:]: if d.startswith("."): dirs.remove(d) for f in files: name, ext = os.path.splitext(f) ...
https://stackoverflow.com/ques... 

Difference between Key, Primary Key, Unique Key and Index in MySQL

... KEY and INDEX are synonyms in MySQL. They mean the same thing. In databases you would use indexes to improve the speed of data retrieval. An index is typically created on columns used in JOIN, WHERE, and ORDER BY clauses. Imagine you have a table called...