Databases with Semi Join Joins · Database of Databases


	CockroachDB NewSQL OLTP AI-Assisted	2014	Relational	Index Nested Loop Join, Shuffle Join, Semi Join, Nested Loop Join, Hash Join, Sort-Merge Join	NewSQL OLTP AI-Assisted
	EsgynDB Failed Company	2015	Relational	Semi Join, Nested Loop Join, Hash Join, Sort-Merge Join, Broadcast Join	Failed Company
GA	Gamma OLAP Abandoned OLTP	1986	Relational	Hash Join, Nested Loop Join, Semi Join, Sort-Merge Join	OLAP Abandoned OLTP
	Greenplum OLAP Forked Code Acquired Company	2003	Relational	Hash Join, Nested Loop Join, Semi Join, Sort-Merge Join	OLAP Forked Code Acquired Company
	Hyrise OLAP	2009	Relational	Hash Join, Index Nested Loop Join, Nested Loop Join, Semi Join, Sort-Merge Join	OLAP
	InfiniDB OLAP Abandoned Failed Company	2000	Relational	Sort-Merge Join, Nested Loop Join, Hash Join, Semi Join	OLAP Abandoned Failed Company
	Kdb+ Acquired Company	1998	Relational	Hash Join, Semi Join	Acquired Company
	LucidDB OLAP Abandoned	2004	Relational	Hash Join, Semi Join	OLAP Abandoned
NE	Neoview Abandoned	2007	Relational	Nested Loop Join, Hash Join, Sort-Merge Join, Semi Join	Abandoned
	NonStop SQL Acquired Company OLTP	1987	Relational	Hash Join, Nested Loop Join, Semi Join, Sort-Merge Join	Acquired Company OLTP
OP	open-gpdb OLAP Forked Code	2024	Relational	Hash Join, Nested Loop Join, Sort-Merge Join	OLAP Forked Code
	PieCloudDB OLAP	2021	Relational	Semi Join, Nested Loop Join, Hash Join, Sort-Merge Join	OLAP
	PosDB OLAP	2017	Relational	Broadcast Join, Hash Join, Nested Loop Join, Semi Join, Shuffle Join, Sort-Merge Join	OLAP
	QuestDB Time-Series AI-Assisted	2014	Relational	Nested Loop Join, Hash Join, Semi Join	Time-Series AI-Assisted
	Skyrise OLAP Serverless Query Engine	2019	Relational	Broadcast Join, Hash Join, Semi Join	OLAP Serverless Query Engine
	TimescaleDB Time-Series AI-Assisted	2017	Relational	Sort-Merge Join, Nested Loop Join, Hash Join, Semi Join	Time-Series AI-Assisted
	Umbra OLAP OLTP	2018	Array / Matrix, Relational	Index Nested Loop Join, Worst-Case Optimal Join, Hash Join, Semi Join	OLAP OLTP
	Velox OLAP Query Engine AI-Assisted	2020	Relational	Broadcast Join, Sort-Merge Join, Hash Join, Semi Join	OLAP Query Engine AI-Assisted
	WarehousePG Forked Code AI-Assisted	2025	Relational	Hash Join, Nested Loop Join, Sort-Merge Join	Forked Code AI-Assisted