The problem is that XML functions(items) do not reset null_value
before their execution and further item excution may use
null_value value of the previous result.
The fix is to reset null_value.
Merged from 5.0 version of this patch:
- Removed entire isamchk section. Support for ISAM tables was removed in 5.0.
- Replaced key_buffer with key_buffer_size (correct spelling).
- Removed skip-bdb, as BDB is no longer included in 5.0 and above.
- Removed commented-out bdb_cache_size and bdb_max_lock for the same reason.
- Removed commented-out innodb_log_arch_dir, deprecated in 5.0.24.
- Removed myisam_max_extra_sort_file_size, deprecated in 5.0.6.
- Removed log_long_format, deprecated in 4.1.
- Replaced default_table_type with default-storage-engine.
New in 5.1:
- Replaced table_cache with table_open_cache.
- Removed skip-federated, should have been in 5.0 only.
- Replaced log_slow_queries with slow_query_log, deprecated in 5.1.29.
- Removed entire isamchk section. Support for ISAM tables was removed in 5.0.
- Replaced key_buffer with key_buffer_size (correct spelling).
- Removed skip-bdb, as BDB is no longer included in 5.0 and above.
- Removed commented-out bdb_cache_size and bdb_max_lock for the same reason.
- Removed commented-out innodb_log_arch_dir, deprecated in 5.0.24.
- Removed myisam_max_extra_sort_file_size, deprecated in 5.0.6.
- Removed log_long_format, deprecated in 4.1.
- Replaced default_table_type with default-storage-engine.
on 5.0
The server crashes on an assert in net_end_statement indicating that the
Diagnostics area wasn't set properly during execution.
This happened on a multi table DELETE operation using the IGNORE keyword.
The keyword is suppose to allow for execution to continue on a best effort
despite some non-fatal errors. Instead execution stopped and no client
response was sent which would have led to a protocol error if it hadn't been
for the assert.
This patch corrects this issue by checking for the existence of an IGNORE
option before setting an error state during row-by-row delete iteration.
Test was flakey on some machines and showed spurious
reds for races.
New-and-improved test makes do with fewer statements,
no mysqltest-variables, and no backticks. Should hope-
fully be more robust. Heck, it's debatable whether we
should have a test for this, anyway.
updates
Attempt to execute trigger or stored function with multi-UPDATE
which used - but didn't update - a table that was also used by
the calling statement led to an error. Read-only reference to
tables used in the calling statement should be allowed.
This problem was caused by the fact that check for conflicting
use of tables in SP/triggers was performed in open_tables(),
and in case of multi-UPDATE we didn't know exact lock type at
this stage.
We solve the problem by moving this check to lock_tables(), so
it can be performed after exact lock types for tables used by
multi-UPDATE are determined.
UNION could convert fixed-point FLOAT(M,D)/DOUBLE(M,D) columns
to FLOAT/DOUBLE when aggregating data types from the SELECT
substatements. While there is nothing particularly wrong with
this behavior, especially when M is greater than the hardware
precision limits, it could be confusing in cases when all
SELECT statements in a union have the same
FLOAT(M,D)/DOUBLE(M,D) columns with equal precision
specifications listed in the same position.
Since the manual is quite vague on what data type should be
returned in such cases, the bug was fixed by implementing the
most 'expected' behavior: do not convert FLOAT(M,D)/DOUBLE(M,D)
to anything else if all SELECT statements in a UNION have the
same precision for that column.
When the thread executing a DDL was killed after finished its
execution but before writing the binlog event, the error code in
the binlog event could be set wrongly to ER_SERVER_SHUTDOWN or
ER_QUERY_INTERRUPTED.
This patch fixed the problem by ignoring the kill status when
constructing the event for DDL statements.
This patch also included the following changes in order to
provide the test case.
1) modified mysqltest to support variable for connection command
2) modified mysql-test-run.pl, add new variable MYSQL_SLAVE to
run mysql client against the slave mysqld.
The problem is that the read and write methods of the shared
memory transport (protocol) didn't react to asynchornous close
events, which could lead to a lock up as the client would wait
(until time out) for a server response that will never come.
The solution is to also wait for close events while waiting
for I/O from or to the server.
Bug report and patch submitted by: Armin Schöffmann
The problem is that the read and write methods of the shared
memory transport (protocol) didn't react to asynchronous close
events, which could lead to a lock up as the client would wait
(until time out) for a server response that will never come.
The solution is to also wait for close events while waiting
for I/O from or to the server.
including modifications according to code review
+ backport of the fix for
Bug 41932 funcs_1: is_collation_character_set_applicability path
too long for tar
which was missing in 5.0 (just a renaming of two files)
