Elasticsearch: The Definitive Guide
Clinton Gormley & Zachary Tong
SAP Transaction Codes
Arshad Khan
Hadoop: The Definitive Guide
Tom White
Typewriters
Tom Hanks & Bruce Curtis & Anthony Casillo
SQL Pocket Guide
Jonathan Gennick
Practical SQL: A Beginner’s Guide to Storytelling with Data
Anthony DeBarros
Learning SQL
Alan Beaulieu