How to Handle Database Joins in Apache Druid vs Rockset
Rockset
JULY 7, 2021
When Druid was introduced in 2011, it did not initially support joins, but a join feature was added in 2020. This is important because it’s often helpful to include fields from multiple Druid files — or multiple tables in a normalized data set — in a single query, providing the equivalent of an SQL join in a relational database.
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