Greg Turnquist, host of the Cockroach Labs video and podcast series SELECT STAR, is renowned for breaking down complex data architecture concepts and offering practical insights into distributed SQL and CockroachDB. With a background in leading Spring Data JPA and Spring Web Services, Turnquist brings a wealth of knowledge and an engaging style to his educational content, which includes lively discussions with guest experts. He emphasizes the dynamism of the data ecosystem, noting the shift from traditional on-premise systems to distributed data solutions that require new approaches to ensure efficiency and compliance across regions. Turnquist's journey into data began with early experiences in data processing and evolved into a passion for query optimization, a skill he honed while revamping SQL queries and contributing to Spring Data JPA. His current role at Cockroach Labs involves creating training materials that bridge the gap between traditional RDBMSs and distributed systems, enhancing developer understanding of CockroachDB's unique features. SELECT STAR, his YouTube series, engages developers with its educational yet entertaining format, underscoring Turnquist's belief in the power of teaching to deepen his own expertise and enrich others' learning experiences.