Fix bug #2483 with InnoDB, UNIQUE secondary index, and NULL values in that unique index; with the IS NULL predicate, InnoDB returned only the first matching row, though there can be many
If MySQL tries to do SELECT from an InnoDB table, but has set no table locks at all in ::external_lock(), print a descriptive error message and assert; some subquery bugs were of this type
Fix assertion failure on line 713 of row0upd.c if there is a column prefix index and the last characters in the prefix are spaces: do not assume that the length of alphabetically equal strings is the same; fix a buglet which could cause InnoDB to think that a secondary index record was not locked though it had been updated in a way which did not alpahabetically change its value, e.g., abc -> aBc
Merge with ibbackup; bug fix: .ibd files were extended 2 x the required amount; InnoDB does not create the small file inno_arch_log... any more at database creation
If innodb_force_recovery >= 5, do not try to fetch an old version of a clustered index record: this reduces crashes when dumping tables from a corrupt database
Multiple tablespaces for InnoDB
sql_table.cc:
Tell explicitly that InnoDB should retrieve all columns in CHECKSUM TABLE
sql_update.cc, sql_select.cc, my_base.h:
More descriptive flag name HA_EXTRA_RETRIEVE_ALL_COLS
Fix bug: if a primary key contains more than one column, then MySQL seems to do fetch next even for a unique search condition: this in turn caused unnecessary locking which did not agree what the InnoDB manual promised
Fix bug: InnoDB could print that it cannot find a clustered index record if an update undo, purge, and a consistent read coincided, in rare cases it might also have returned a wrong row in a query
Merge InnoDB-4.0.14: SAVEPOINT now implemented; InnoDB now accepts also column prefix keys; crashing bug in ON UPDATE CASCADE fixed; page checksum formula fixed
Fix crash in HANDLER PREV or NEXT if the cursor was positioned using a unique search condition on the primary key: in that case InnoDB does NOT store the cursor position for later fetch prev or next
Print a warning if MySQL uses a partial-field key value prefix in a search; that would not work if the search flag would happen to be HA_READ_PREFIX_LAST
Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
ha_innodb.cc:
Do not fetch all columns if change_active_index() is called during a query; a sum(a), max(a) query seemed to do that, doing unnecessary copying (the change actually made in the previous bk ci)
Free BLOB heap of handle when MySQL calls some ::extra()'s
Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE
sql_select.cc:
Remove superfluous prints to .err log when a locking SELECT fails to a deadlock or a lock wait timeout
Merge InnoDB-4.0.5: new isolation levels READ COMMITTED and READ UNCOMMITTED now supported, selective deadlock resolution
mysqld.cc:
Change MySQL default isolation level to REPEATABLE READ; note that InnoDB has always had that default, and BDB and MyISAM always run at SERIALIZABLE level anyway
