Differentially Private SQL with Bounded User Contribution
Citation: Royce J Wilson, Celia Yuxin Zhang, William Lam, Damien Desfontaines, Daniel Simmons-Marengo, Bryant Gipson Differentially Private SQL with Bounded User Contribution.
Describes a differential privacy method differing in two major ways from existing implementations: support of the common case where a single user is associated with multiple rows, and support of arbitrary GROUP BY statements.
Theoretical and practical relevance:
https://github.com/google/differential-privacy/ is an open source implementation of the method described.