diff options
Diffstat (limited to 'sql/sql_join_cache.h')
| -rw-r--r-- | sql/sql_join_cache.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/sql/sql_join_cache.h b/sql/sql_join_cache.h index 920b7a507c1..f87cdcec649 100644 --- a/sql/sql_join_cache.h +++ b/sql/sql_join_cache.h @@ -121,11 +121,14 @@ protected: */ JOIN *join; - /* - Cardinality of the range of join tables whose fields can be put into the - cache. A table from the range not necessarily contributes to the cache. + /* + JOIN_TAB of the first table that can have it's fields in the join cache. + That is, tables in the [start_tab, tab) range can have their fields in the + join cache. + If a join tab in the range represents an SJM-nest, then all tables from the + nest can have their fields in the join cache, too. */ - uint tables; + JOIN_TAB *start_tab; /* The total number of flag and data fields that can appear in a record @@ -647,8 +650,6 @@ public: buff= 0; } - JOIN_TAB *get_next_table(JOIN_TAB *tab); - friend class JOIN_CACHE_HASHED; friend class JOIN_CACHE_BNL; friend class JOIN_CACHE_BKA; |