a temporary table.

The result string of the Item_func_group_concat wasn't initialized in the 
copying constructor of the Item_func_group_concat class. This led to a
wrong charset of GROUP_CONCAT result when the select employs a temporary
table.

The copying constructor of the Item_func_group_concat class now correctly
initializes the charset of the result string.


mysql-test/t/func_gconcat.test:
  Added a test case for the bug#29850: Wrong charset of the GROUP_CONCAT result
  when the select employs a temporary table.
mysql-test/r/func_gconcat.result:
  Added a test case for the bug#29850: Wrong charset of the GROUP_CONCAT result
  when the select employs a temporary table.
sql/item_sum.cc:
  Bug#29850: Wrong charset of GROUP_CONCAT result when the select employs
  a temporary table.
  The copying constructor of the Item_func_group_concat class now correctly
  initializes the charset of the result string.

into  gleb.loc:/home/uchum/work/bk/5.0-opt

For each view the mysqldump utility creates a temporary table
with the same name and the same columns as the view 
in order to satisfy views that depend on this view.
After the creation of all tables, mysqldump drops all
temporary tables and creates actual views.
However, --skip-add-drop-table and --compact flags disable
DROP TABLE statements for those temporary tables. Thus, it was
impossible to create the views because of existence of the
temporary tables with the same names.


client/mysqldump.c:
  Fixed bug #28524.
  The mysqldump utility has been modified to unconditionally drop
  temporary tables before the creation of views.
mysql-test/t/mysqldump.test:
  Updated test case for bug #28524 and updated result of previous tests.
mysql-test/r/mysqldump.result:
  Updated test case for bug #28524 and updated result of previous tests.

table (datadir)
Set errno when retunring an error in my_create_with_symlink.


mysys/my_symlink2.c:
  Bug #29325: set errno when retunring 
  an error in my_create_with_symlink

into  mysql.com:/home/psergey/mysql-5.0-bug29740

'/' and '\' in path delimiters:
- Fix this by creating new handler with exactly the same path line as
  was passed to ha_create/ha_open.


sql/opt_range.cc:
  Set thd->net.report_error on handler::clone() failure

  A typo fixed.


sql/item_cmpfunc.cc:
  A typo fixed.

  Fixed compiler warning.


sql/item_cmpfunc.cc:
  Fixed compiler warning.

  A comment changed.


sql/item_cmpfunc.cc:
  A comment changed.

The get_time_value function is added. It is used to obtain TIME values both
from items the can return time as an integer and from items that can return
time only as a string.
The Arg_comparator::compare_datetime function now uses pointer to a getter
function to obtain values to compare. Now this function is also used for
comparison of TIME values.
The get_value_func variable is added to the Arg_comparator class.
It points to a getter function for the DATE/DATETIME/TIME comparator.


mysql-test/t/type_time.test:
  Extended test case for the bug#29555.
mysql-test/r/type_time.result:
  Extended test case for the bug#29555.
sql/item_cmpfunc.cc:
  Extended fix for the bug#29555.
  The get_time_value function is added. It is used to obtain TIME values both
  from items the can return time as an integer and from items that can return
  time only as a string.
  The Arg_comparator::compare_datetime function now uses pointer to a getter
  function to obtain values to compare. Now this function is also used for
  comparison of TIME values.
sql/item_cmpfunc.h:
  Extended fix for the bug#29555.
  The get_value_func variable is added to the Arg_comparator class.
  It points to a getter function for the DATE/DATETIME/TIME comparator.

into  moonbone.local:/mnt/gentoo64/work/29729-bug-5.0-opt-mysql

The Field_newdate::store when storing a DATETIME value was returning the
'value was cut' error even if the thd->count_cuted_fields flag is set to
CHECK_FIELD_IGNORE. This made range optimizr think that there is no
appropriate data in the table and thus to return an empty set.

Now the Field_newdate::store function returns conversion error only if the
thd->count_cuted_fields flag isn't set to CHECK_FIELD_IGNORE.


mysql-test/t/type_time.test:
  Added a test case for the bug#29729: Wrong conversion error led to an empty result set.
mysql-test/r/type_time.result:
  Added a test case for the bug#29729: Wrong conversion error led to an empty result set.
sql/field.cc:
  Bug#29729: Wrong conversion error led to an empty result set.

into  mysql.com:/home/psergey/mysql-5.0-bug29740

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

into  gleb.loc:/home/uchum/work/bk/5.0-opt

- return HA_KEY_SCAN_NOT_ROR flag for HASH indexes;
- Fix ha_heap::cmp_ref() to work with BTREE index scans.


mysql-test/r/index_merge.result:
  BUG#29740: testcase
mysql-test/t/index_merge.test:
  BUG#29740: testcase
sql/ha_heap.h:
  BUG#29740: Wrong query results for index_merge/union over HEAP table.
  - make HEAP table engine return HA_KEY_SCAN_NOT_ROR flag for HASH 
    indexes,as HASH index does not guarantee any ordering for rows
    within the hash bucket.
  - Fix BTREE indexes: make ha_heap::cmp_ref() compare the rowids in the 
    same way as ha_key_cmp() does.
sql/opt_range.cc:
  BUG#29740: Fix comment about ROR scans.

Time values were compared by the BETWEEN function as strings. This led to a
wrong result in cases when some of arguments are less than 100 hours and other
are greater.

Now if all 3 arguments of the BETWEEN function are of the TIME type then
they are compared as integers.


mysql-test/t/type_time.test:
  Added a tes tcase for the bug#29739: Incorrect time comparison in BETWEEN.
mysql-test/r/type_time.result:
  Added a tes tcase for the bug#29739: Incorrect time comparison in BETWEEN.
sql/item_cmpfunc.cc:
  Bug#29739: Incorrect time comparison in BETWEEN.
  Now if all 3 arguments of the BETWEEN function are of the TIME type then
  they are compared as integers.

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug29604

A bug in the restore_prev_nj_state function allowed interleaving 
inner tables of outer join operations with outer tables. With the
current implementation of the nested loops algorithm it could lead
to wrong result sets for queries with nested outer joins.
Another bug in this procedure effectively blocked evaluation of some
valid execution plans for queries with nested outer joins. 


mysql-test/r/join_nested.result:
  Added a test case for bug #29604.
mysql-test/t/join_nested.test:
  Added a test case for bug #29604.

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt-29360

  Additional fix for bug #29360.


sql/field_conv.cc:
  Additional fix for bug #29360.

into  moonbone.local:/mnt/gentoo64/work/29555-bug-5.0-opt-mysql

Time values were compared as strings. This led to a wrong comparison
result when comparing values one of which is under 100 hours and another is
over 100 hours.

Now when the Arg_comparator::set_cmp_func function sees that both items to
compare are of the TIME type it sets the comparator to the
Arg_comparator::compare_e_int or the Arg_comparator::compare_int_unsigned
functions.


sql/item_cmpfunc.cc:
  Bug#29555: Comparing time values as strings may lead to a wrong result.
  Now when the Arg_comparator::set_cmp_func function sees that both items to
  compare are of the TIME type it sets the comparator to the
  Arg_comparator::compare_e_int or the Arg_comparator::compare_int_unsigned
  functions.
mysql-test/r/type_time.result:
  Added a test case for the bug#29555: Comparing time values as strings may
  lead to a wrong result.
mysql-test/t/type_time.test:
  Added a test case for the bug#29555: Comparing time values as strings may
  lead to a wrong result.

into  gleb.loc:/home/uchum/work/bk/5.0-opt

The special `zero' enum value was coerced to the normal
empty string enum value during a field-to-field copy.
This bug affected CREATE ... SELECT statements and
SELECT aggregate GROUP BY enum field statements.

Also this bug made unnecessary warnings during
the execution of CREATE ... SELECT statements:
Warning       1265    Data truncated for column...


sql/field_conv.cc:
  Fixed bug #29360.
  The field_conv function has been modified to properly convert
  the special `zero' enum value between enum fields.
mysql-test/t/type_enum.test:
  Updated test case for bug #29360.
mysql-test/r/type_enum.result:
  Updated test case for bug #29360.
mysql-test/r/type_ranges.result:
  Updated test case for bug #29360.

test if TRUNCATE TABLE works with keep_files_on_create

into  magare.gmz:/home/kgeorge/mysql/autopush/B29325-5.0-opt


include/my_base.h:
  Auto merged

By default MyISAM overwrites .MYD and .MYI files no 
DATA DIRECTORY option is used. This can lead to two tables
using the same .MYD and .MYI files (that can't be dropped).

To prevent CREATE TABLE from overwriting a file a new option
is introduced : keep_files_on_create
When this is on the CREATE TABLE throws an error if either
the .MYD or .MYI exists for a MyISAM table.
The option is off by default (resulting in compatible behavior).


include/my_base.h:
  Bug #29325: introduce keep_files_on_create
myisam/mi_create.c:
  Bug #29325: introduce keep_files_on_create
mysql-test/r/create.result:
  Bug #29325: test case
mysql-test/t/create.test:
  Bug #29325: test case
sql/ha_myisam.cc:
  Bug #29325: introduce keep_files_on_create
sql/set_var.cc:
  Bug #29325: introduce keep_files_on_create
sql/sql_class.h:
  Bug #29325: introduce keep_files_on_create
sql/sql_table.cc:
  Bug #29325: introduce keep_files_on_create
sql/unireg.cc:
  Bug #29325: introduce keep_files_on_create

into  magare.gmz:/home/kgeorge/mysql/autopush/B29070-5.0-opt

The Ctrl-C handler in mysql closes the console while ReadConsole()
waits for console input.
But the main thread was detecting that ReadConsole() haven't read 
anything and was processing as if there're data in the buffer.
Fixed to handle correctly this error condition.
No test case added as the test relies on Ctrl-C sent to the client
from its console.


client/mysql.cc:
  Bug #29469: handle correctly console read error
mysys/my_conio.c:
  Bug #29469: 
   1. handle correctly console read error
   2. add boundry checks for console buffer.

into  magare.gmz:/home/kgeorge/mysql/autopush/B29070-5.0-opt