这是数据分析最基础的能力，我用的是《SQL学习指南》这本书，很适合入门。
行业分析师、商业分析等岗位,更偏向于市场数据的宏观分析和预测,需要有一定的统计学基础和经济学,对sql的要求并不高,我见过很多商业分析师甚至都不会sql,宏观数据一般也不会放在数据仓库里让你去取,外部数据根本用不着sql; 比较常见的业务分析师,对sql的掌握有一定要求,不过也不必要十分精通,只要能从数据仓库里取数...
print(Pythonisaprogramminglanguagethat\ letsyouworkquickly\ andintegratesystemsmoreeffectively.) Pythonisaprogramminglanguagethatletsyouworkquicklyandintegrate systemsmoreeffectively. #多条语句示例 a=0;b=0;c=0 4.注释 注释是代码中加入的一行或多行信息,对程序的语句、函数、数据结构等进行说明,以此 来提升代...
Programming with Python and SQL For most data science professionals that are working with a structured dataset, that data is housed within arelational database management system. These systems usually require the use of the SQL programming language in order to manage and manipulate the data within ...
https://www.programiz.com/python-programming/online-compiler Programiz 有一个简单的文件编辑器。它不能写文件,运行资源也有限。该网站还有用于 C、C++、Java、C#、Java 的编译器,以及一个用于 SQL 数据库和 HTML/CSS 的沙箱。 9、Ideone https://ideone.com ...
DataFrame是一个表格型的数据结构,它含有一组有序的列,每列可以是不同的值类型(数值、字符串、布尔值等)。DataFrame既有行索引也有列索引,它可以被看做由Series组成的字典(共用同一个索引)。跟其他类似的数据结构相比(如R的data.frame),DataFrame中面向行和面向列的操作基本上是平衡的。其实,DataFrame中的数据是...
If you don't already have Python, install the Python runtime and Python Package Index (PyPI) package manager from python.org. Prefer to not use your own environment? Open as a devcontainer using GitHub Codespaces. . pymssql package from PyPI. A SQL database and credentials...
Use PyQt5'sMVC-like interfaceto work efficiently with data, right in your applications. Use custom data stores and sync widgets automatically, allowing you to focus on the logic. Use tabular views to displaySQL databasesandnumpyorpandasdatastructures. Use linked widgets for easy editing. ...
sqlite-utils - Python CLI utility and library for manipulating SQLite databases. Other Relational Databases pymssql - A simple database interface to Microsoft SQL Server. clickhouse-driver - Python driver with native interface for ClickHouse. NoSQL Databases cassandra-driver - The Python Driver for...
从南图借的这本书,已经拖了好几个月没有读完了,加紧阅读和学习一下!前面3章的笔记记在了纸上,如果有可能拍照记录一下,后面还是电子记录下,纸质的不方便和保存和查阅,也不方便分享。书的配套代码,来自异步社区:https://box.lenovo.com/l/o5OgDR