Created 13 years, 1 month ago Modified 1 year, 9 months ago Type article Status active License CC BY-SA / Gnu FDL History Comments In the versions of MariaDB/MySQL before 5.3 only one block-based join algorithm was implemented: the Block Nested Loops (BNL) join algorithm which could only be used for inner joins. MariaDB 5.3 enhanced the implementation of BNL joins and provides a variety of block-b