Now thd->mem_root is a pointer to thd->main_mem_root and THR_MALLOC is a pointer to thd->mem_root.
This gives us the following benefits:
- Allow us to easily detect if arena has already been swapped before (this fixes a bug in setup_conds() where arena was swaped twice in some cases)
- Faster swaps of arenas (as we don't have to copy the whole MEM_ROOT)
- We don't anymore have to call my_pthread_setspecific_ptr(THR_MALLOC,...) to change where memory is alloced. Now it's enough to set thd->mem_root
My previous change that "set @a=NULL" doesn't change charset
fixed 'Bug #6321' as well. Prove with a new test that
FIELD(<uservariable content NULL>, ...) now works fine too.
Added a case for bug #6365.
item_cmpfunc.cc:
Fixed bug #6365 : Server crashed when list of values
in IN predicate contains NULL while the tested field is
of the character type and not of the default set;
e.g. when f in 'f IN (NULL,'aa') belongs to binary
character set, while the default character set is latin1.
"SHOW CREATE TABLE" mysql-4.0 and mysql-3.23
compatibiliry mode change:
Check that a binary collation adds 'binary'
suffix into a char() column definition in
mysql40 and mysql2323 modes. This allows
not to lose the column's case sensitivity
when loading the dump in pre-4.1 servers.
The idea of the fix is that the administrative statements
OPTIMIZE TABLE, REPAIR TABLE and ANALYZE TABLE should not
generate binlog errors if there is no errors on the master.
Added protocol::flush() for easier embedded-server code
Increase block allocation variables a bit as they where a bit too small for MySQL 4.1
Added option --silent to client_test
WL#2067 add features to mysqltest: "disable_error_abort" + "$mysql_errno"
$mysql_errno is a new builtin variable of mysqltest and contains the
return code of the last command send to the server.
"--disable_abort_on_error" switches the abort of mysqltest
after "unmasked" failing statements off.
"--enable_abort_on_error" switches the abort of mysqltest
after "unmasked" failing statements on. (default)
"Maskings" are
!$<error number> and --error <error number>
in the line before the statement to be checked.
The benefit of the option "--disable_abort_on_error" is that
- all statements after the failing statement are executed
- a r/<test>.reject will be produced
- it is possible to write test cases, which perform
code sequences depending on the return code of a single
statement
constant with a column. The string is converted into the column
character set. It conversion doesn't lose data, then operation
is possible. Otherwise, give an error, as it was earlier.
new define for long signal section size
bumbed up limit for attributes to 128
use new define in SectionSegment
some bug fixing of send fragmented signal +
make chunk size a multiple the dew define for SectionSegment size
improved mechanisn of detection posibility to be NULL for single row queries
switched off substitution optimisation for single row subqueries in PS due to problem in resolving substituted expressions
(changes to make subselects test working with PS protocol)
New mysqltest that can run mysqltest with PS
Added support for ZEROFILL in PS
Fixed crash when one called mysql_stmt_store_result() without a preceding mysql_stmt_bind_result()
Updated test cases to support --ps-protocol
(Some tests are still run using old protocol)
Fixed crash in PS when using SELECT * FROM t1 NATURAL JOIN t2...
Fixed crash in PS when using sub queries
Create table didn't signal when table was created. This could cause a "DROP TABLE created_table" in another thread to wait "forever"
Fixed wrong permissions check in PS and multi-table updates (one could get permission denied for legal quries)
Fix for PS and SELECT ... PROCEDURE
Reset all warnings when executing a new PS query
group_concat(...ORDER BY) didn't work with PS
Fixed problem with test suite when not using innodb
The same problem with SET columns:
find_set() now executes find_type2() to do charset aware search,
instead of always using system_charset_info comparison.
