Columnstore The columnstore is the default table type in SingleStore Helios. Columnstore is also known as Universal Storage. The following sections explain the basic concepts of columnstore/Universal Storage. In this sectionHow the Columnstore WorksWriting Columnstore DataLocking in ColumnstoresManaging Columnstore SegmentsEncoded Data in ColumnstoresHighly Selective JoinsColumnstore Seekability using JSONColumnstore Sizing EstimationsUniversal StorageLast modified: April 15, 2025