Designing Data-Intensive Application

Book by Martin Kleppmann

Martin Kleppmann Researcher

Data is at the heart of many system design challenges today. Difficult issues like scalability, consistency, reliability, efficiency, and maintainability need to be addressed. We also have an overwhelming variety of tools, including relational databases, NoSQL data stores, stream or batch processors, and message brokers.

Getting related buyers error Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column '' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by