Kouhei Sutou
null+****@clear*****
Tue Jun 16 22:43:35 JST 2015
Kouhei Sutou 2015-06-16 22:43:35 +0900 (Tue, 16 Jun 2015) New Revision: 342c848cac2ffcd688bdcea05ade8e470cb68c48 https://github.com/mroonga/mroonga/commit/342c848cac2ffcd688bdcea05ade8e470cb68c48 Message: mariadb10.1 storage: support index_flags() for ORDER BY DESC key::user_defined_key_parts is used as part. We may use the behavior for optimization in the future. Modified files: ha_mroonga.cpp Modified: ha_mroonga.cpp (+8 -0) =================================================================== --- ha_mroonga.cpp 2015-06-16 22:22:22 +0900 (c391168) +++ ha_mroonga.cpp 2015-06-16 22:43:35 +0900 (011daa0) @@ -2683,6 +2683,14 @@ ulong ha_mroonga::storage_index_flags(uint idx, uint part, bool all_parts) const key->algorithm == HA_KEY_ALG_UNDEF) { flags = HA_READ_NEXT | HA_READ_PREV | HA_READ_RANGE; bool need_normalize_p = false; + // TODO: MariaDB 10.1 passes key->user_defined_key_parts as part + // for ORDER BY DESC. We just it fallback to part = 0. We may use + // it for optimization in the future. + // + // See also: test_if_order_by_key() in sql/sql_select.cc. + if (KEY_N_KEY_PARTS(key) == part) { + part = 0; + } Field *field = &(key->key_part[part].field[0]); if (field && should_normalize(field)) { need_normalize_p = true; -------------- next part -------------- HTML����������������������������...Download