result set".

To enable full access to contents of I_S tables from stored functions
or statements that use them, we manipulate with thread's open tables
state and ensure that we won't cause deadlock when we open tables by
ignoring flushes and name-locks.
Building of contents of I_S.TABLES no longer requires locking of tables
since we use use handler::info() method with HA_STATUS_AUTO flag instead
of handler::update_auto_increment() for obtaining information about
auto-increment values. But this also means that handlers have to implement
support for HA_STATUS_AUTO flag (particularly InnoDB needs it).


mysql-test/r/alter_table.result:
  Updated test results. This change was caused by the fact that now when
  we build contents of I_S tables (and thus output of SHOW INDEX) we
  don't use instances of tables which may be already opened and locked
  by thread (we always use new instance).
mysql-test/r/information_schema.result:
  Added test which checks how information about current auto-increment value for
  table is reported in INFORMATION_SCHEMA.TABLES view.
mysql-test/r/sp.result:
  Added test for bug #10055 "Using stored function with information_schema causes
  empty result set".
mysql-test/t/information_schema.test:
  Added test which checks how information about current auto-increment value for
  table is reported in INFORMATION_SCHEMA.TABLES view.
mysql-test/t/sp.test:
  Added test for bug #10055 "Using stored function with information_schema causes
  empty result set".
sql/mysql_priv.h:
  close_thread_tables():
    Get rid of 'stopper' argument which is no longer used. Now when we need
    to open and then close some table without touching tables which are already
    opened we use THD::reset_n/restore_backup_open_tables_state() methods.
  open_tables()/open_normal_and_derived_tables():
    Added 'flags' argument to be able open tables even if some has done
    a flush or hold namelock on them.
sql/sp.cc:
  close_proc_table/open_proc_table_for_read/db_find_routine():
    Replaced push_open_tables_state/pop_open_tables_state() methods which
    were saving/restoring current open tables state in/from THD::open_state_list
    with reset_n_backup_open_tables_state/restore_backup_open_tables_state()
    methods which assume that backup storage for this state is allocated on
    stack (or elsewhere) by their caller.
  open_proc_table_for_read():
    Since now we can have several open tables states stacked up we can't rely
    rely on checking whether we have some tables open in previous state.
    Instead we always assume that some tables are open and we need to ignore
    flush while locking mysql.proc. We don't really need 
    MYSQL_LOCK_IGNORE_GLOBAL_READ_LOCK in this case since we open mysql.proc table
    only for reading.
sql/sp.h:
  Added declarations of open_proc_table_for_read()/close_proc_table() to be
  able to use them in sql_show.cc.
sql/sql_base.cc:
  close_thread_tables():
    Get rid of 'stopper' argument which is no longer used. Now when we need
    to open and then close some table without touching tables which are already
    opened we use THD::reset_n/restore_backup_open_tables_state() methods.
  open_tables()/open_normal_and_derived_tables():
    Added 'flags' argument to be able open tables even if some has done
    a flush or hold namelock on them.
sql/sql_class.cc:
  Open_tables_state, THD:
    Replaced push_open_tables_state/pop_open_tables_state() methods which
    were saving/restoring current open tables state in/from THD::open_state_list
    with reset_n_backup_open_tables_state/restore_backup_open_tables_state()
    methods which assume that backup storage for this state is allocated on
    stack (or elsewhere) by their caller.
sql/sql_class.h:
  Open_tables_state, THD:
    Replaced push_open_tables_state/pop_open_tables_state() methods which
    were saving/restoring current open tables state in/from THD::open_state_list
    with reset_n_backup_open_tables_state/restore_backup_open_tables_state()
    methods which assume that backup storage for this state is allocated on
    stack (or elsewhere) by their caller.
sql/sql_handler.cc:
  open_tables()/open_normal_and_derived_tables():
    Added 'flags' argument to be able open tables even if some has done
    a flush or hold namelock on them.
sql/sql_prepare.cc:
  open_tables()/open_normal_and_derived_tables():
    Added 'flags' argument to be able open tables even if some has done
    a flush or hold namelock on them.
sql/sql_show.cc:
  get_all_tables():
    Now we use THD::reset_n_/restore_backup_open_tables_state() for 
    saving/restoring open tables state instead of working with it directly
    (This also allows us to have proper content of I_S system tables in
    statements with stored functions and in stored functions). We also
    ignore possible flushes when opening tables (we may create deadlock
    otherwise). Also we do all needed manipulations with LEX in this function
    and not in get_schema_tables_result() now.
  get_schema_tables_record():
    Let us use handler::info() method with HA_STATUS_AUTO flag for obtaining
    information about table's auto-increment value. This allows to avoid locking
    of tables which is needed when we use handler::update_auto_increment() method.
  fill_schema_proc():
    Now we use open_proc_table_for_read/close_proc_table() for access to
    mysql.proc table (so we won't cause deadlock if we already have some
    tables open and locked, this also allows us to have proper content in
    ROUTINES system table in statements using stored functions/in stored
    functions).
  get_schema_tables_result():
    Moved all manipulations with Open_tables_state and LEX needed for
    safe opening of tables to ST_SCHEMA_TABLE::fill_table functions
    (i.e. get_all_tables() and fill_schema_proc()).
sql/sql_update.cc:
  open_tables()/open_normal_and_derived_tables():
    Added 'flags' argument to be able open tables even if some has done
    a flush or hold namelock on them.

into  mysql.com:/usr/home/bar/mysql-5.0

  After merge fix.


sql/item.cc:
  After merge fix.

into  mysql.com:/media/sda1/mysql/mysql-5.0-10760-new

in cursors.


libmysql/libmysql.c:
  - reset_stmt_handle(): don't reset the server side just because we have 
    an open cursor: the server will close the cursor automatically if 
    needed
sql/sql_prepare.cc:
  - implement Prepared_statement::close_cursor,
  - implicitly close an open cursor in mysql_stmt_execute instead of 
    issuing an error (to reduce the need to explicitly close cursors
    and save network bandwidth).
  - cleanup
sql/sql_select.cc:
  Remove a destructor: cursor destruction can not be done by simply
  calling a destructor, because of cross-references between cursor
  and statement memory.
sql/sql_select.h:
  - add an empty Cursor destructor
tests/mysql_client_test.c:
  - remove a test for dropped functionality

into  mysql.com:/usr/home/bar/mysql-5.0


mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged
sql/item.h:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/item.cc:
  After merge fix.

removed unnecessary operation


sql/sql_lex.cc:
  valgrind error fix(uninitialiased variable)
sql/sql_parse.cc:
  removed unnecessary operation

into  mysql.com:/usr/home/bar/mysql-4.1.num-conv


mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/sql_table.cc:
  Auto merged

into  mysql.com:/opt/local/work/mysql-5.0-root

into  mysql.com:/home/dlenev/src/mysql-5.0-mysqlproc

into  mysql.com:/opt/local/work/mysql-5.0-root


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

into mysql.com:/M50/mysql-5.0


VC++Files/tests/mysql_client_test.dsp:
  Auto merged
mysql-test/r/view.result:
  Auto merged
mysql-test/t/view.test:
  Auto merged
sql/sql_insert.cc:
  Auto merged

character set is UCS2".
The bug is no longer repeatable.


mysql-test/r/ps.result:
  Test results fixed (a test case for Bug#9442)
mysql-test/t/ps.test:
  A test case for Bug#9442 "Set parameter make query fail if column 
  character set is UCS2

Tagging the 5.0.9-beta release.


mysql-test/r/view.result:
  Auto merged
mysql-test/t/view.test:
  Auto merged
VC++Files/tests/mysql_client_test.dsp:
  Merging separate commits into 5.0.9-beta build clone and general BK tree.
sql/sql_insert.cc:
  Merging separate commits into 5.0.9-beta build clone and general BK tree.

into  mysql.com:/home/dlenev/src/mysql-5.0-mysqlproc

all tables suggested by prelocking algorithm.
Added test for bug #11889 "Server crashes when dropping trigger using stored
routine" (which was fixed by previous patch).


mysql-test/r/trigger.result:
  Since we are using open_ltable() now to open table for trigger creation, code
  for error when we try to create trigger on view has changed to equivalent one.
  Added test for bug #11889 "Server crashes when dropping trigger using stored
  routine".
mysql-test/t/trigger.test:
  Since we are using open_ltable() now to open table for trigger creation, code
  for error when we try to create trigger on view has changed to equivalent one.
  Added test for bug #11889 "Server crashes when dropping trigger using stored
  routine".
sql/sql_trigger.cc:
  mysql_create_or_drop_trigger():
    It is better to open only table for which we are going to create or drop
    trigger with open_ltable() since we don't really need working prelocking
    in this case.

into  mysql.com:/opt/local/work/mysql-5.0-root


sql/item.cc:
  Auto merged
mysql-test/r/ps.result:
  Manual merge.
mysql-test/t/ps.test:
  Manual merge.
sql/item_func.cc:
  Manual merge.

binary).


mysql-test/r/ps.result:
  Test results fixed (Bug#9379)
mysql-test/t/ps.test:
  A test case for Bug#9379 (collation of a parameter marker is binary)
sql/item.cc:
  - set Item_param::collation to str_value collation, if Item_param
  is assigned a string. Reset it to default in Item_param::reset() (on 
  the next execution it can be assigned a number).
sql/item_func.cc:
  - now that item collation can change between executions
  (if this item is Item_param), we need to register the change
  of the execution tree in the rollback list.

into  mysql.com:/opt/local/work/mysql-5.0-root


configure.in:
  Manual merge
mysql-test/r/ps.result:
  Manual merge
mysql-test/t/ps.test:
  Manual merge

into  mysql.com:/opt/local/work/mysql-5.0-root

into  mysql.com:/opt/local/work/mysql-4.1-11458

into  mysql.com:/opt/local/work/mysql-5.0-root


sql/mysql_priv.h:
  Auto merged
sql/sql_lex.h:
  Auto merged
mysql-test/r/ps.result:
  Manual merge.
mysql-test/t/ps.test:
  Manual merge.
sql/item.cc:
  Manual merge.
sql/item.h:
  Manual merge.
sql/item_subselect.h:
  Manual merge.
sql/sql_parse.cc:
  Manual merge.
sql/sql_prepare.cc:
  Manual merge.

configure.in:
  Increase version number to 4.1.14, as the clone for 4.1.13 has been created.

into  mysql.com:/opt/local/work/mysql-4.1-11458


sql/mysql_priv.h:
  Auto merged

data": remove the fix for another bug (8807) that
added OUTER_REF_TABLE_BIT to all subqueries that used a placeholder
to prevent their evaluation at prepare. As this bit hanged in 
Item_subselect::used_tables_cache for ever, a constant subquery with
a placeholder was never evaluated as such, which caused wrong 
choice of the execution plan for the statement.
- to fix Bug#8807 backport a better fix from 5.0
- post-review fixes.


mysql-test/r/ps.result:
  Bug#11458: test results fixed
mysql-test/t/ps.test:
  - add a test case for Bug#11458 "Prepared statement with subselects return 
  random data"
sql/item.cc:
  - remove unnecessary Item_param::fix_fields
  - fix Item_param::set_null to set item_type accordingly (safety:
    Item_param should behave like a basic constant).
sql/item.h:
  Remove Item_param::fix_fields
sql/item_subselect.h:
  Remove no more existing friend.
sql/mysql_priv.h:
  Add UNCACHEABLE_PREPARE to mark all subqueries as uncacheable if
  in statement prepare (backport from 5.0).
sql/sql_lex.h:
  Comment fixed.
sql/sql_parse.cc:
  If in statement prepare, mark all subqueries as uncacheable (backport
  from 5.0)
sql/sql_prepare.cc:
  Switch off the uncacheable flag from all subqueries after statement
  prepare is done (backport from 5.0)

  mysql_update(): Call handler::unlock_row()
  also in the first while loop.
  This patch is from Heikki,
  and it was approved by Sergei Golubchik.


sql/sql_update.cc:
  mysql_update(): Call handler::unlock_row()
  also in the first while loop.
  This patch is from Heikki,
  and it was approved by Sergei Golubchik.

into  mysql.com:/home/dlenev/src/mysql-5.0-mysqlproc

indirectly using non-cached function".


mysql-test/r/trigger.result:
  Fixed test case after fixing bug #11554 "Server crashes on statement
  indirectly using non-cached function".
mysql-test/t/trigger.test:
  Fixed test case after fixing bug #11554 "Server crashes on statement
  indirectly using non-cached function".

into mysql.com:/home/bk/bXXX-mysql-5.0


mysql-test/r/rpl_deadlock.result:
  Auto merged
mysql-test/t/rpl_deadlock.test:
  Auto merged

end of the test, causing subsequent tests to fail.


mysql-test/r/rpl_deadlock.result:
  Result change.
mysql-test/t/rpl_deadlock.test:
  Tables used in the test but not dropped.

into  mysql.com:/home/dlenev/src/mysql-5.0-mysqlproc


mysql-test/r/sp-error.result:
  Auto merged
mysql-test/t/sp-error.test:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sp.h:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/share/errmsg.txt:
  Manual merge.
sql/sp.cc:
  Manual merge.

into mysql.com:/home/gluh/MySQL/Merge/5.0


mysql-test/r/func_str.result:
  Auto merged
mysql-test/t/func_str.test:
  Auto merged
sql/item_strfunc.cc:
  Auto merged

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

of stored routines definitions even if we already have some tables open and
locked. To avoid deadlocks in this case we have to put certain restrictions
on locking of mysql.proc table.

This allows to use stored routines safely under LOCK TABLES without explicitly
mentioning mysql.proc in the list of locked tables. It also fixes bug #11554
"Server crashes on statement indirectly using non-cached function".


mysql-test/r/sp-error.result:
  Added test which checks that now we can read stored routines definitions
  under LOCK TABLES even if we have not locked mysql.proc explicitly. Also
  added check for restrictions which this ability puts on mysql.proc locking.
  Updated test for bug #9566 to correspond this new situation.
mysql-test/r/sp-threads.result:
  Added test for bug #11554 "Server crashes on statement indirectly using
  non-cached function".
mysql-test/t/sp-error.test:
  Added test which checks that now we can read stored routines definitions
  under LOCK TABLES even if we have not locked mysql.proc explicitly. Also
  added check for restrictions which this ability puts on mysql.proc locking.
  Updated test for bug #9566 to correspond this new situation.
mysql-test/t/sp-threads.test:
  Added test for bug #11554 "Server crashes on statement indirectly using
  non-cached function".
sql/lock.cc:
  get_lock_data():
   To be able to open and lock for reading system tables like 'mysql.proc',
   when we already have some tables opened and locked, and avoid deadlocks
   we have to disallow write-locking of these tables with any other tables.
sql/mysql_priv.h:
  open_table() has new parameter which allows to open table even if some-one
  has done a flush or holding namelock on it.
sql/share/errmsg.txt:
  Added error message saying that one cannot write-lock some of system tables
  with any other tables.
sql/sp.cc:
  open_proc_table_for_read()/close_proc_table():
    Added functions to be able open and close mysql.proc table when we already
    have some tables open and locked.
  open_proc_table_for_update():
    Added function to simplify opening of mysql.proc for updates.
  db_find_routine_aux()/db_find_routine()/db_update_routine()/...
    Moved responsibility for opening mysql.proc table from db_find_routine_aux()
    one level up, since this level knows better which type of table access for
    reading of for update it needs.
  sp_function_exists():
    Removed unused function.
sql/sp.h:
  sp_function_exists():
    Removed unused function.
sql/sql_base.cc:
  open_table():
    Added new parameter which allows to open table even if some-one has done a
    flush or holding namelock on it.
  open_unireg_entry():
    Mark 'mysql.proc' as a system table which has special restrictions on its
    locking, but thanks to them can be open and locked even if we already have
    some open and locked.
sql/sql_class.cc:
  Moved THD members holding information about open and locked tables to separate
  Open_tables_state class to be able to save/restore this state easier.
  Added THD::push_open_tables_state()/pop_open_tables_state() methods for
  saving/restoring this state.
sql/sql_class.h:
  Moved THD members holding information about open and locked tables to separate
  Open_tables_state class to be able to save/restore this state easier.
  Added THD::push_open_tables_state()/pop_open_tables_state() methods for
  saving/restoring this state.
sql/sql_lex.cc:
  Removed LEX::proc_table member which was not really used.
sql/sql_lex.h:
  Removed LEX::proc_table member which was not really used.
sql/sql_table.cc:
  open_table() has new parameter which allows to open table even if some-one
  has done a flush or holding namelock on it.
sql/table.h:
  Added TABLE_SHARE::system_table indicating that this table is system table
  like 'mysql.proc' and we want to be able to open and read-lock it even when
  we already have some tables open and locked (and because of this we have
  to put some restrictions on write locking it).

  added out of range handling