The function CRC32() returns unsigned integer.
But the metadata (the unsigned flag) for the 
function was set incorrectly.
As a result type arithmetics based on the 
function's metadata (like finding the concise
type of an temporary table column to hold the result)
returned incorrect results.
Fixed by returning correct type information.

This fix is based on code contributed by Martin Friebe
(martin@hybyte.com) on 2007-03-30.  


mysql-test/r/func_str.result:
  Bug #27530: test case
mysql-test/t/func_str.test:
  Bug #27530: test case
sql/item_strfunc.h:
  Bug #27530: Marked CRC32() as returning unsigned

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.


mysql-test/r/distinct.result:
  Bug #27659: test case
mysql-test/t/distinct.test:
  Bug #27659: test case
sql/sql_select.cc:
  Bug #27659: use correct ref_pointer_array element

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


sql/sql_table.cc:
  Auto merged

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


mysql-test/r/strict.result:
  test case
mysql-test/t/strict.test:
  test case
sql/sql_table.cc:
  issue an error in strict mode
  if enum|set has duplicates members

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

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


sql/sql_table.cc:
  Auto merged

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


sql/item_func.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged

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


sql/sql_load.cc:
  Auto merged

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

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


sql/field.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged

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.


mysql-test/t/loaddata.test:
  Added a test case for the bug#27586: Wrong autoinc value assigned by LOAD DATA in the
  NO_AUTO_VALUE_ON_ZERO mode.
mysql-test/r/loaddata.result:
  Added a test case for the bug#27586: Wrong autoinc value assigned by LOAD DATA in the
  NO_AUTO_VALUE_ON_ZERO mode.
sql/sql_load.cc:
  Bug#27586: Wrong autoinc value assigned by LOAD DATA in the
  NO_AUTO_VALUE_ON_ZERO mode.
  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.
  Remove 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


sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/sql_table.cc:
  Auto merged

sql/parse_file.cc:
  Add comments.

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


sql/item_func.cc:
  Auto merged

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

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


sql/ha_ndbcluster.cc:
  Auto merged

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


include/my_base.h:
  Auto merged
sql/ha_ndbcluster.h:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_trigger.h:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/ha_ndbcluster.cc:
  Merge

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


sql/item_func.cc:
  Auto merged

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


sql/ha_ndbcluster.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged

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.


include/my_base.h:
  Added HA_EXTRA_DELETE_CANNOT_BATCH and HA_EXTRA_UPDATE_CANNOT_BATCH to inform handler when batching of delete/update is not possible.
mysql-test/r/ndb_trigger.result:
  Bug #26242  UPDATE with subquery and triggers failing with cluster tables
  ---
  Added new test cases
mysql-test/t/ndb_trigger.test:
  Bug #26242  UPDATE with subquery and triggers failing with cluster tables
  ---
  Added new test cases
sql/ha_ndbcluster.cc:
  Bug #26242  UPDATE with subquery and triggers failing with cluster tables: Use HA_EXTRA_DELETE_CANNOT_BATCH and HA_EXTRA_UPDATE_CANNOT_BATCH to inform handler when batching of delete/update is not possible
sql/ha_ndbcluster.h:
  Bug #26242  UPDATE with subquery and triggers failing with cluster tables: Added member variables for handling of HA_EXTRA_DELETE_CANNOT_BATCH and HA_EXTRA_UPDATE_CANNOT_BATCH to inform handler when batching of delete/update is not possible
sql/mysql_priv.h:
  Added new method prepare_triggers_for_insert_stmt to check if batching of delete/update must be disallowed.
sql/sql_delete.cc:
  Use HA_EXTRA_DELETE_CANNOT_BATCH to inform handler when batching of delete is not possible
sql/sql_insert.cc:
  Added method prepare_triggers_for_insert_stmt to check if batching of delete/update must be dissallowed.
  Use HA_EXTRA_DELETE_CANNOT_BATCH and HA_EXTRA_UPDATE_CANNOT_BATCH to inform handler
   when batching of delete/update is not possible
sql/sql_load.cc:
  Call prepare_triggers_for_insert_stmt to check if batching of delete/update must be dissallowed and
  mark fields used by triggers for the insert statement.
sql/sql_trigger.h:
  Added has_triggers to support what particular triggers exist on a table.
sql/sql_update.cc:
  Use HA_EXTRA_UPDATE_CANNOT_BATCH to inform handler when batching of update is not possible

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

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


sql/item_func.cc:
  Auto merged

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

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


mysql-test/r/order_by.result:
  Manual merge
mysql-test/t/order_by.test:
  Manual merge

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


sql/item_cmpfunc.cc:
  Auto merged
mysql-test/r/order_by.result:
  Manual merge
mysql-test/t/order_by.test:
  Manual merge
sql/item_cmpfunc.h:
  Manual merge

IN/BETWEEN predicates in sorting expressions.
Wrong results may occur when the select list contains an expression
with IN/BETWEEN predicate that differs from a sorting expression by
an additional NOT only.
 
Added the method Item_func_opt_neg::eq to compare correctly expressions
containing [NOT] IN/BETWEEN.
The eq method inherited from the Item_func returns TRUE when comparing
'a IN (1,2)' with 'a NOT IN (1,2)' that is not, of course, correct.  


mysql-test/r/order_by.result:
  Added a test case for bug #27532.
mysql-test/t/order_by.test:
  Added a test case for bug #27532.
sql/item_cmpfunc.cc:
  Fixed bug #27532.
  Added the method Item_func_opt_neg::eq to compare correctly expressions
  containing [NOT] IN/BETWEEN.
  The eq method inherited from the Item_func returns TRUE when comparing
  'a IN (1,2)' with 'a NOT IN (1,2)' that is not, of course, correct.
sql/item_cmpfunc.h:
  Added the method Item_func_opt_neg::eq to compare correctly expressions
  containing [NOT] IN/BETWEEN.
  The eq method inherited from the Item_func returns TRUE when comparing
  'a IN (1,2)' with 'a NOT IN (1,2)' that is not, of course, correct.