Add amgettreeheight index AM API routine The only current implementation is for btree where it calls _bt_getrootheight(). Other index types can now also use this to pass information to their amcostestimate routine. Previously, btree was hardcoded and other index types could not hook into the optimizer at this point.
Author: Mark Dilger <[email protected]> Discussion: https://www.postgresql.org/message-id/flat/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/56fead44dcc70df9f9188fee08e5aefe3da43ccc Modified Files -------------- contrib/bloom/blutils.c | 1 + doc/src/sgml/indexam.sgml | 16 ++++++++++++++++ src/backend/access/brin/brin.c | 1 + src/backend/access/gin/ginutil.c | 1 + src/backend/access/gist/gist.c | 1 + src/backend/access/hash/hash.c | 1 + src/backend/access/nbtree/nbtree.c | 10 ++++++++++ src/backend/access/spgist/spgutils.c | 1 + src/backend/optimizer/util/plancat.c | 13 ++++++------- src/include/access/amapi.h | 8 ++++++++ src/include/access/nbtree.h | 1 + src/test/modules/dummy_index_am/dummy_index_am.c | 1 + 12 files changed, 48 insertions(+), 7 deletions(-)
