Conversion errors when constructing the condition for an
IN predicates were treated as if the affected column contains
NULL. If such a IN predicate is inside NOT we get wrong 
results.
Corrected the handling of conversion errors in an IN predicate 
that is resolved by unique_subquery (through 
subselect_uniquesubquery_engine).

into  magare.gmz:/home/kgeorge/mysql/autopush/B19372-5.0-opt

Added a test case.
The problem was fixed by the fix for bug #17379.
The problem was that because of some conditions 
the optimizer always preferred range or full index
scan access methods to lookup access methods even
when the latter were much cheaper.

into  magare.gmz:/home/kgeorge/mysql/autopush/B27659-5.0-opt

The optimizer transforms DISTINCT into a GROUP BY
when possible.
It does that by constructing the same structure
(a list of ORDER instances) the parser makes when
parsing GROUP BY.
While doing that it also eliminates duplicates.
But if a duplicate is found it doesn't advance the
pointer to ref_pointer array, so the next 
(and subsequent) ORDER structures point to the wrong
element in the SELECT list.
Fixed by advancing the pointer in ref_pointer_array
even in the case of a duplicate.

into  mysql.com:/home/gluh/MySQL/Bugs/5.0.27069

issue an error in strict mode
if enum|set column has duplicates members in 'create table'

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/home/kent/bk/tmp4/mysql-5.0-engines

into  moonbone.local:/mnt/gentoo64/work/27586-bug-5.0-opt-mysql

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-4.1-opt

into  moonbone.local:/mnt/gentoo64/work/27586-bug-5.0-opt-mysql

NO_AUTO_VALUE_ON_ZERO mode.

The table->auto_increment_field_not_null variable wasn't reset after
reading a row which may lead to inserting a wrong value to the auto-increment
field to the following row.

The table->auto_increment_field_not_null variable is reset now right after a
row is being written in the read_fixed_length() and the read_sep_field()
functions.
Removed wrong setting of the table->auto_increment_field_not_null variable in
the read_sep_field() function.

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  xiphis.org:/home/antony/work2/mysql-5.0-engines.merge

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

- test case workaround to avoid random failures

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  dev3-240.dev.cn.tlan:/home/justin.he/mysql/mysql-5.0/mysql-5.0-ndb-bj.merge

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

In certain cases AFTER UPDATE/DELETE triggers on NDB tables that referenced
subject table didn't see the results of operation which caused invocation
of those triggers. In other words AFTER trigger invoked as result of update
(or deletion) of particular row saw version of this row before update (or
deletion).

The problem occured because NDB handler in those cases postponed actual
update/delete operations to be able to perform them later as one batch.

This fix solves the problem by disabling this optimization for particular
operation if subject table has AFTER trigger for this operation defined.
To achieve this we introduce two new flags for handler::extra() method:
HA_EXTRA_DELETE_CANNOT_BATCH and HA_EXTRA_UPDATE_CANNOT_BATCH.
These are called if there exists AFTER DELETE/UPDATE triggers during a
statement that potentially can generate calls to delete_row()/update_row().
This includes multi_delete/multi_update statements as well as insert statements
that do delete/update as part of an ON DUPLICATE statement.

into  magare.gmz:/home/kgeorge/mysql/autopush/B27513-5.0-opt

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mrg04/50

into  magare.gmz:/home/kgeorge/mysql/autopush/B27513-5.0-opt

into  olga.mysql.com:/home/igor/mysql-5.0-opt