1.) Added a new option to mysql_lock_tables() for ignoring FLUSH TABLES.
Used the new option in create_table_from_items().
It is necessary to prevent the SELECT table from being reopend.
It would get new storage assigned for its fields, while the
SELECT part of the command would still use the old (freed) storage.
2.) Protected the CREATE TABLE and CREATE TABLE ... SELECT commands
against a global read lock. This prevents a deadlock in
CREATE TABLE ... SELECT in conjunction with FLUSH TABLES WITH READ LOCK
and avoids the creation of new tables during a global read lock.
3.) Replaced set_protect_against_global_read_lock() and
unset_protect_against_global_read_lock() by
wait_if_global_read_lock() and start_waiting_global_read_lock()
in the INSERT DELAYED handling.
We will however give a warning when opening such a table that users should use ALTER TABLE ... FORCE to fix
the table. In future release we will fix that REPAIR TABLE will be able to handle this case
Count null_bits separately from field offsets and adjust them in case of primary key parts.
(Previously a CREATE TABLE with a lot of null fields that was part of a primary key caused MySQL to wrongly count the number of bytes needed to store null bits)
This is a more complete bug fix for #6236
if we fall back to mysql_alter_table() (for InnoDB), don't do binlogging in mysql_alter_table(), as mysql_admin_table()
is not supposed to do any binlogging (it is done by the caller).
CAST() now produces warnings when casting a wrong INTEGER or CHAR values. This also applies to implicite string to number casts. (Bug #5912)
ALTER TABLE now fails in STRICT mode if it generates warnings.
Inserting a zero date in a DATE, DATETIME or TIMESTAMP column during TRADITIONAL mode now produces an error. (Bug #5933)
#6559 "DROP DATABASE forgets to drop triggers".
If we drop table we should also drop all triggers associated with it.
To do this we have to check for existence of .TRG file when we are
dropping table and delete it too.
(For 4.1 tables old 'VARCHAR' fields are converted to true VARCHAR in the next ALTER TABLE)
This ensures that one can use MySQL 5.0 privilege tables with MySQL 4.1
Windows to call CreateFileMapping() with correct arguments, and
propogating the introduction of query_id_t to everywhere query ids are
passed around. (Bug #8826)
Enabled VARCHAR testing for innodb
NOTE: innodb.test currently fails becasue of a bug in InnoDB.
I have informed Heikki about this and expect him to fix this ASAP
(otherwise a deadlock when ALTER writes to
binlog holding LOCK_open, it causes binlog rotation,
binlog waits for prepared transactions to commit, and commit
needs LOCK_open to check for global read lock)
