1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
ANALYZE ======= ANALYZE TABLE table_name [, table_name] ... ANALYZE TABLE read locks a table, and then analyzes and stores the key distribution for a table. .. todo:: is read lock always true? .. todo:: some engines don't perform an explicit gathering of statistics when you type ANALYZE. e.g. innobase (which only copies it's current estimate). Only recently did I add this to HailDB so that it does go and do the index dives on ANALYZE. |