With the explosion of data, computing power, and cloud data warehouses,
SQL has become an even more indispensable tool for the savvy analyst or
data scientist. This practical book reveals new and hidden ways to
improve your SQL skills, solve problems, and make the most of SQL as
part of your workflow.
You'll learn how to use both common and exotic SQL functions such as
joins, window functions, subqueries, and regular expressions in new,
innovative ways--as well as how to combine SQL techniques to accomplish
your goals faster, with understandable code. If you work with SQL
databases, this is a must-have reference.
- Learn the key steps for preparing your data for analysis
- Perform time series analysis using SQL's date and time manipulations
- Use cohort analysis to investigate how groups change over time
- Use SQL's powerful functions and operators for text analysis
- Detect outliers in your data and replace them with alternate values
- Establish causality using experiment analysis, also known as A/B
testing