Learn how to explore what's available in a database: the tables, relationships between them, and data stored in them.
You have access to a database. Now what do you do? Building on your existing skills joining tables, using basic functions, grouping data, and using subqueries, the next step in your SQL journey is learning how to explore a database and the data in it. Using data from Stack Overflow, Fortune 500 companies, and 311 help requests from Evanston, IL, you'll get familiar with numeric, character, and date/time data types.阅读更多.
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Exploratory Data Analysis in SQL 中涵盖的技术和工具与 商业分析师 招聘广告中的要求最为相似。