Обсуждение: pgsql: Add missing inequality searches to rbtree
Add missing inequality searches to rbtree PostgreSQL contains the implementation of the red-black tree. The red-black tree is the ordered data structure, and one of its advantages is the ability to do inequality searches. This commit adds rbt_find_less() and rbt_find_great() functions implementing these searches. While these searches aren't yet used in the core code, they might be useful for extensions. Discussion: https://postgr.es/m/CAGRrpzYE8-7GCoaPjOiL9T_HY605MRax-2jgTtLq236uksZ1Sw%40mail.gmail.com Author: Steve Chavez, Alexander Korotkov Reviewed-by: Alexander Korotkov Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/e57519a4637a8d88ae993ac1273d2b59d03a0f75 Modified Files -------------- src/backend/lib/rbtree.c | 62 ++++++++++++++++++ src/include/lib/rbtree.h | 2 + src/test/modules/test_rbtree/test_rbtree.c | 102 +++++++++++++++++++++++++++++ 3 files changed, 166 insertions(+)