If you use SQL in your day-to-day work as a data analyst data scientist or data engineer
this popular pocket guide is your ideal on-the-job reference. You'll find many examples that
address the language's complexities along with key aspects of SQL used in Microsoft SQL Server
MySQL Oracle Database PostgreSQL and SQLite. In this updated edition author Alice Zhao
describes how these database management systems implement SQL syntax for both querying and
making changes to a database. You'll find details on data types and conversions regular
expression syntax window functions pivoting and unpivoting and more. Quickly look up how to
perform specific tasks using SQL Apply the book's syntax examples to your own queries Update
SQL queries to work in five different database management systems NEW: Connect Python and R to
a relational database NEW: Look up frequently asked SQL questions in the How Do I? chapter
