Bug#4968 ""Stored procedure crash if cursor opened on altered table"
Bug#6895 "Prepared Statements: ALTER TABLE DROP COLUMN does nothing"
Bug#19182 "CREATE TABLE bar (m INT) SELECT n FROM foo; doesn't work from
stored procedure."
Bug#19733 "Repeated alter, or repeated create/drop, fails"
Bug#22060 "ALTER TABLE x AUTO_INCREMENT=y in SP crashes server"
Bug#24879 "Prepared Statements: CREATE TABLE (UTF8 KEY) produces a
growing key length" (this bug is not fixed in 5.0)
Re-execution of CREATE DATABASE, CREATE TABLE and ALTER TABLE
statements in stored routines or as prepared statements caused
incorrect results (and crashes in versions prior to 5.0.25).
In 5.1 the problem occured only for CREATE DATABASE, CREATE TABLE
SELECT and CREATE TABLE with INDEX/DATA DIRECTOY options).
The problem of bugs 4968, 19733, 19282 and 6895 was that functions
mysql_prepare_table, mysql_create_table and mysql_alter_table are not
re-execution friendly: during their operation they modify contents
of LEX (members create_info, alter_info, key_list, create_list),
thus making the LEX unusable for the next execution.
In particular, these functions removed processed columns and keys from
create_list, key_list and drop_list. Search the code in sql_table.cc
for drop_it.remove() and similar patterns to find evidence.
The fix is to supply to these functions a usable copy of each of the
above structures at every re-execution of an SQL statement.
To simplify memory management, LEX::key_list and LEX::create_list
were added to LEX::alter_info, a fresh copy of which is created for
every execution.
The problem of crashing bug 22060 stemmed from the fact that the above
metnioned functions were not only modifying HA_CREATE_INFO structure
in LEX, but also were changing it to point to areas in volatile memory
of the execution memory root.
The patch solves this problem by creating and using an on-stack
copy of HA_CREATE_INFO in mysql_execute_command.
Additionally, this patch splits the part of mysql_alter_table
that analizes and rewrites information from the parser into
a separate function - mysql_prepare_alter_table, in analogy with
mysql_prepare_table, which is renamed to mysql_prepare_create_table.
mysql-test/r/ps.result:
Update test results (Bug#19182, Bug#22060, Bug#4968, Bug#6895)
mysql-test/r/sp.result:
Update results (Bug#19733)
mysql-test/t/ps.test:
Add test cases for Bug#19182, Bug#22060, Bug#4968, Bug#6895
mysql-test/t/sp.test:
Add a test case for Bug#19733
sql/field.h:
Implement a deep copy constructor for create_field
sql/mysql_priv.h:
LEX::key_list and LEX::create_list were moved to LEX::alter_info.
Update declarations to use LEX::alter_info instead of these two
members.
Remove declarations of mysql_add_index, mysql_drop_index.
sql/sql_class.cc:
Implement deep copy constructors.
sql/sql_class.h:
Implement (almost) deep copy constructors for key_part_spec,
Alter_drop, Alter_column, Key, foreign_key.
Replace pair<columns, keys> with an instance of Alter_info in
select_create constructor. We create a new copy of Alter_info
each time we re-execute SELECT .. CREATE prepared statement.
sql/sql_insert.cc:
Adjust to a new signature of create_table_from_items.
sql/sql_lex.cc:
Implement Alter_info::Alter_info that would make a "deep" copy
of all definition lists (keys, columns).
Move is_partition_management() from sql_partition.cc (feature-based
file division is evil).
sql/sql_lex.h:
Move key_list and create_list to class Alter_info. Implement
Alter_info::Alter_info that can be used with PS and SP.
Get rid of Alter_info::clear() which was an attempt to save on
matches and always use Alter_info::reset().
Implement an auxiliary Alter_info::init_for_create_from_alter()
which is used in mysql_alter_table.
sql/sql_list.cc:
Implement a copy constructor of class List that makes a deep copy
of all list nodes.
sql/sql_list.h:
Implement a way to make a deep copy of all list nodes.
sql/sql_parse.cc:
Adjust to new signatures of mysql_create_table, mysql_alter_table,
select_create. Functions mysql_create_index and mysql_drop_index has
become identical after initialization of alter_info was moved to the
parser, and were merged. Flag enable_slow_log was not updated for
SQLCOM_DROP_INDEX, which was a bug.
Just like CREATE INDEX, DROP INDEX is currently done via complete
table rebuild and is rightfully a slow administrative statement.
sql/sql_partition.cc:
Move is_partition_management() to sql_lex.cc
Adjust code to the new Alter_info.
sql/sql_table.cc:
Adjust mysql_alter_table, mysql_recreate_table, mysql_create_table,
mysql_prepare_table to new signatures.
Rename mysql_prepare_table to mysql_prepare_create_table. Make
sure it follows the convention and returns FALSE for success and
TRUE for error.
Move parts of mysql_alter_table to mysql_prepare_alter_table.
Move the first invokation of mysql_prepare_table from mysql_alter_table
to compare_tables, as it was needed only for the purpose
of correct comparison.
Since now Alter_info itself is created in the runtime mem root,
adjust mysql_prepare_table to always allocate memory in the
runtime memory root.
Remove dead code.
sql/sql_yacc.yy:
LEX::key_list and LEX::create_list moved to class Alter_info
into vajra.(none):/opt/local/work/mysql-5.1-runtime
include/my_global.h:
Auto merged
mysql-test/include/mix1.inc:
Auto merged
mysql-test/r/innodb_mysql.result:
Auto merged
mysql-test/r/ps_2myisam.result:
Auto merged
mysql-test/r/ps_3innodb.result:
Auto merged
mysql-test/r/ps_4heap.result:
Auto merged
mysql-test/r/ps_5merge.result:
Auto merged
mysql-test/r/ps_7ndb.result:
Auto merged
mysql-test/r/type_date.result:
Auto merged
mysql-test/t/disabled.def:
Auto merged
mysql-test/t/type_date.test:
Auto merged
sql/filesort.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
Bug #23667 "CREATE TABLE LIKE is not isolated from alteration
by other connections"
Bug #18950 "CREATE TABLE LIKE does not obtain LOCK_open"
As well as:
Bug #25578 "CREATE TABLE LIKE does not require any privileges
on source table".
The first and the second bugs resulted in various errors and wrong
binary log order when one tried to execute concurrently CREATE TABLE LIKE
statement and DDL statements on source table or DML/DDL statements on its
target table.
The problem was caused by incomplete protection/table-locking against
concurrent statements implemented in mysql_create_like_table() routine.
We solve it by simply implementing such protection in proper way.
Most of actual work for 5.1 was already done by fix for bug 20662 and
preliminary patch changing locking in ALTER TABLE.
The third bug allowed user who didn't have any privileges on table create
its copy and therefore circumvent privilege check for SHOW CREATE TABLE.
This patch solves this problem by adding privilege check, which was missing.
Finally it also removes some duplicated code from mysql_create_like_table()
and thus fixes bug #26869 "TABLE_LIST::table_name_length inconsistent with
TABLE_LIST::table_name".
mysql-test/r/create-big.result:
Added test coverage for concurrency-related issues with CREATE TABLE LIKE.
mysql-test/r/create.result:
Adjusted error-code in the test case after refactoring code that
implements CREATE TABLE ... LIKE.
mysql-test/r/grant2.result:
Added test for bug#25578 "CREATE TABLE LIKE does not require any privileges
on source table".
mysql-test/t/create-big.test:
Added test coverage for concurrency-related issues with CREATE TABLE LIKE.
mysql-test/t/create.test:
Adjusted error-code in the test case after refactoring code that
implements CREATE TABLE ... LIKE.
mysql-test/t/disabled.def:
Recent code changes ensured that CREATE TABLE LIKE statement is properly
isolated against other statements, so synchronization.test should no
longer fail (see fix for bug 20662 and preliminary patch for bug 23667
changing ALTER TABLE locking).
mysql-test/t/grant2.test:
Added test for bug#25578 "CREATE TABLE LIKE does not require any privileges
on source table".
sql/handler.h:
Introduced new flag for HA_CREATE_INFO::options in order to be able to
distinguish CREATE TABLE ... LIKE from other types of CREATE TABLE.
sql/mysql_priv.h:
mysql_create_like_table() now takes source table name not as a
Table_ident object but as regular table list element.
sql/sql_lex.h:
Removed LEX::like_name member. Now we use special flag in
LEX::create_info::options for distinguishing CREATE TABLE ... LIKE
from other types of CREATE TABLE and store name of source table as
regular element in statement's table list.
sql/sql_parse.cc:
CREATE TABLE ... LIKE implementation now uses statement's table list
for storing information about the source table. We also use flag
in LEX::create_info.options for distinguishing it from other types
of CREATE TABLE.
Finally CREATE TABLE ... LIKE now requires the same privileges on
the source tables as SHOW CREATE TABLE. Moved this privilege check
to check_show_create_table_access() function.
sql/sql_partition.cc:
Now we use special flag in LEX::create_info::options for distinguishing
CREATE TABLE ... LIKE from other types of CREATE TABLE and store name
of source table as regular element in statement's table list.
sql/sql_table.cc:
mysql_create_like_table():
- Commented and cleaned-up a bit code which is responsible for achieving
isolation from concurrent statements. Most of actual work was done by
fix for bug 20662 and preliminary patch changing locking locking in
ALTER TABLE, so here we do minor things like relaxing locking on
source table (we don't need lock on it, to have it open is enough) and
adjusting code to make it more friendly against code implementing I_S.
- Get rid of duplicated code related to source database/table name
handling. All these operations are already done in
st_select_lex::add_table_to_list(), so we achieve the same effect
by including source table into the statement's table list.
sql/sql_yacc.yy:
Now we use special flag in LEX::create_info::options for distinguishing
CREATE TABLE ... LIKE from other types of CREATE TABLE and store name
of source table as regular element in statement's table list.
into mysql.com:/home/svoj/devel/mysql/merge/mysql-5.1-engines
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/t/disabled.def:
Auto merged
sql/handler.cc:
Auto merged
sql/sql_table.cc:
Auto merged
storage/myisam/ha_myisam.cc:
Auto merged
and invalidation in the most general case (non-temporary table and
not simple RENAME or ENABLE/DISABLE KEYS or partitioning command).
See comment for sql/sql_table.cc for more information.
These changes are prerequisite for 5.1 version of fix for bug #23667
"CREATE TABLE LIKE is not isolated from alteration by other connections"
mysql-test/include/mix1.inc:
Extended coverage for behavior of ALTER TABLE statement under LOCK TABLES,
which should be consistent across all platforms and for all engines.
mysql-test/r/alter_table-big.result:
Changed test for bug #25044 to use @@debug and injected sleeps
infrastructure. Extended test coverage for ALTER TABLE's behavior
under concurrency.
mysql-test/r/alter_table.result:
Extended coverage for behavior of ALTER TABLE statement under LOCK TABLES,
which should be consistent across all platforms and for all engines.
mysql-test/r/innodb_mysql.result:
Extended coverage for behavior of ALTER TABLE statement under LOCK TABLES,
which should be consistent across all platforms and for all engines.
mysql-test/t/alter_table-big.test:
Changed test for bug #25044 to use @@debug and injected sleeps
infrastructure. Extended test coverage for ALTER TABLE's behavior
under concurrency.
mysql-test/t/alter_table.test:
Extended coverage for behavior of ALTER TABLE statement under LOCK TABLES,
which should be consistent across all platforms and for all engines.
sql/mysql_priv.h:
Made functions reopen_table() and close_handle_and_leave_table_as_lock()
available outside of sql_base.cc file.
Changed close_data_tables() in such way that after closing handler
for the table it leaves TABLE object for it in table cache not as
placeholder for ordinary name-lock but as placeholder for an exclusive
name-lock. Renamed this routine to close_data_files_and_morph_locks().
sql/sql_base.cc:
Made functions reopen_table() and close_handle_and_leave_table_as_lock()
available outside of sql_base.cc file.
Changed close_data_tables() in such way that after closing handler
for the table it leaves TABLE object for it in table cache not as
placeholder for ordinary name-lock but as placeholder for an exclusive
name-lock. Renamed this routine to close_data_files_and_morph_locks().
Also adjusted it so it can work properly not only in LOCK TABLES mode.
sql/sql_table.cc:
Changed the way in which ALTER TABLE implementation handles table
locking and invalidation in the most general case (non-temporary table
and not simple RENAME or ENABLE/DISABLE KEYS or partitioning command)
Now after preparing new version of the table we:
1) Wait until all other threads close old version of table.
2) Close instances of table open by this thread and replace them
with exclusive name-locks.
3) Rename the old table to a temp name, rename the new one to the
old name.
4) If we are under LOCK TABLES and don't do ALTER TABLE ... RENAME
we reopen new version of table.
5) Write statement to the binary log.
6) If we are under LOCK TABLES and do ALTER TABLE ... RENAME we
remove name-locks from list of open tables and table cache.
7) If we are not not under LOCK TABLES we rely on close_thread_tables()
call to remove name-locks from table cache and list of open table.
Such approach:
a) Eliminates possibility for concurrent statement to sneak in and get
access to the new version of the table before ALTER TABLE gets logged
into binary log.
b) Ensures that ALTER TABLE behaves under LOCK TABLES in the same way
on all platforms and for all engines (in 5.0 this was not true)
c) Preserves nice invariant that if table is open in some connection
there is a guarantee that .FRM file for this table exists and is
properly named.
into vajra.(none):/opt/local/work/mysql-5.1-runtime
mysql-test/include/mix1.inc:
Auto merged
mysql-test/r/innodb_mysql.result:
Auto merged
mysql-test/r/ps_1general.result:
Auto merged
mysql-test/t/disabled.def:
Auto merged
mysql-test/t/ps_1general.test:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/ha_ndbcluster_binlog.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_cache.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_partition.cc:
Auto merged
sql/sql_prepare.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.h:
Auto merged
sql/sql_insert.cc:
SCCS merged
TABLES" and failures of alter_table.test on Windows which occured after
pushing fix for bugs #20662, #20903, #24508, #24738 (various problems
with CREATE TABLE SELECT).
ALTER TABLE statements which were handled using "fast" alter table
optimization were not properly working under LOCK TABLES if table
was transactional (for all table types under Windows).
Code implementing "fast" version of ALTER TABLE tried to open and
lock table using open_ltable() after renaming .FRM files (which
corresponds to renaming tables in normal case) in some cases
(for transactional tables or on Windows). This caused problems
under LOCK TABLES and conflicted with name-lock taken by
ALTER TABLE RENAME on target tables.
This patch solves this issue by using reopen_name_locked_table()
instead of open_ltable().
mysql-test/include/mix1.inc:
Added test for bug #28415 "Some ALTER TABLE statements no longer work
under LOCK TABLES" and minimal coverage for fast ALTER TABLE behaviour
for transactional tables.
mysql-test/r/innodb_mysql.result:
Added test for bug #28415 "Some ALTER TABLE statements no longer work
under LOCK TABLES" and minimal coverage for fast ALTER TABLE behaviour
for transactional tables.
sql/sql_table.cc:
mysql_alter_table():
Fixed handling of transactional tables (and all tables on Windows)
by "fast" ALTER TABLE.
Code implementing "fast" version of ALTER TABLE tried to open and
lock table using open_ltable() after renaming .FRM files (which
corresponds to renaming tables in normal case) for such tables.
This caused problems under LOCK TABLES and conflicted with name-lock
taken by ALTER TABLE RENAME on target tables. We solve this issue by
using reopen_name_locked_table() instead of open_ltable().
Bug #20662 "Infinite loop in CREATE TABLE IF NOT EXISTS ... SELECT
with locked tables"
Bug #20903 "Crash when using CREATE TABLE .. SELECT and triggers"
Bug #24738 "CREATE TABLE ... SELECT is not isolated properly"
Bug #24508 "Inconsistent results of CREATE TABLE ... SELECT when
temporary table exists"
Deadlock occured when one tried to execute CREATE TABLE IF NOT
EXISTS ... SELECT statement under LOCK TABLES which held
read lock on target table.
Attempt to execute the same statement for already existing
target table with triggers caused server crashes.
Also concurrent execution of CREATE TABLE ... SELECT statement
and other statements involving target table suffered from
various races (some of which might've led to deadlocks).
Finally, attempt to execute CREATE TABLE ... SELECT in case
when a temporary table with same name was already present
led to the insertion of data into this temporary table and
creation of empty non-temporary table.
All above problems stemmed from the old implementation of CREATE
TABLE ... SELECT in which we created, opened and locked target
table without any special protection in a separate step and not
with the rest of tables used by this statement.
This underminded deadlock-avoidance approach used in server
and created window for races. It also excluded target table
from prelocking causing problems with trigger execution.
The patch solves these problems by implementing new approach to
handling of CREATE TABLE ... SELECT for base tables.
We try to open and lock table to be created at the same time as
the rest of tables used by this statement. If such table does not
exist at this moment we create and place in the table cache special
placeholder for it which prevents its creation or any other usage
by other threads.
We still use old approach for creation of temporary tables.
Note that we have separate fix for 5.0 since there we use slightly
different less intrusive approach.
mysql-test/r/create.result:
Extended test coverage for CREATE TABLE ... SELECT. In particular added
tests for bug #24508 "Inconsistent results of CREATE TABLE ... SELECT
when temporary table exists" and bug #20662 "Infinite loop in CREATE
TABLE IF NOT EXISTS ... SELECT with locked tables".
mysql-test/r/trigger.result:
Added test case for bug #20903 "Crash when using CREATE TABLE .. SELECT
and triggers"
mysql-test/t/create.test:
Extended test coverage for CREATE TABLE ... SELECT. In particular added
tests for bug #24508 "Inconsistent results of CREATE TABLE ... SELECT
when temporary table exists" and bug #20662 "Infinite loop in CREATE
TABLE IF NOT EXISTS ... SELECT with locked tables".
mysql-test/t/trigger.test:
Added test case for bug #20903 "Crash when using CREATE TABLE .. SELECT
and triggers"
sql/lock.cc:
Now for creation of name-lock placeholder lock_table_name() uses
auxiliary function table_cache_insert_placeholder().
sql/mysql_priv.h:
Removed declaration of non-existing build_table_path() routine.
The former mysql_create_table_internal() was renamed to
mysql_create_table_no_lock() and now exposed to other modules to
give them opportunity of creation of tables in cases when name-lock
is already obtained.
reopen_name_locked_table() now has 3rd argument which controls linking
in of table being opened into THD::open_tables (this is useful in
cases when placeholder used for name-locking is already linked into
this list).
Added declaration of auxiliary function table_cache_insert_placeholder()
which is used for creation of table placeholders for name-locking.
Added declaration of lock_table_name_if_not_cached() which can be
used to take an exclusive name-lock on table if there are no records
for it in table cache.
Changed signature of unlink_open_table() function to simplify its use
and make it useful for table placeholders and tables that are only open.
Added auxiliary drop_open_table() routine.
Moved declaration of refresh_version to table.h header to make it
accessible from inline methods of TABLE class.
MYSQL_OPEN_IGNORE_LOCKED_TABLES flag is no longer used. Instead
MYSQL_OPEN_TEMPORARY_ONLY option was added.
sql/sql_base.cc:
Added support for the new approach to the handling of CREATE TABLE
... SELECT for base tables.
Now we try to open and lock table to be created at the same time as
the rest of tables used by this statement. If such table does not
exist at this moment we create and place in the table cache special
placeholder for it which prevents its creation or any other usage
by other threads.
Note significant distinctions of this placeholder from the placeholder
used for normal name-lock: 1) It is treated like open table by other
name-locks so it does not allow name-lock taking operations like DROP
TABLE or RENAME TABLE to proceed. 2) it is linked into THD::open_tables
list and automatically removed during close_thread_tables() call
open_tables():
Implemented logic described above. To do this added
auxiliary check_if_table_exists() function.
Removed support for MYSQL_OPEN_IGNORE_LOCKED_TABLES option
which is no longer used.
Added MYSQL_OPEN_TEMPORARY_ONLY which is used to restrict
search for temporary tables only.
close_cached_tables()/close_thread_table()/reopen_tables()/
close_old_data_files()/table_is_used()/remove_table_from_cache():
Added support for open placeholders (note that we also use them
when we need to re-open tables during flush).
unlink_open_table():
Changed function signature to simplify its use and to make
useful for open placeholders and tables which are only
open and not locked.
Added auxiliary drop_open_table() routine.
reopen_name_locked_table():
Now has 3rd argument which controls linking in of table being
opened into THD::open_tables (this is useful in cases when
placeholder used for name-locking is already linked into
this list).
Added auxiliary table_cache_insert_placeholder() routine which
simplifies creation of placeholders used for name-locking.
Added lock_table_name_if_not_cached() which can be used to take
an exclusive name-lock on table if there are no records for it
in table cache.
sql/sql_handler.cc:
Adjusted mysql_ha_mark_tables_for_reopen() routine to properly
handle placeholders which now can be linked into open tables
list.
sql/sql_insert.cc:
Introduced new approach to handling of base tables in CREATE TABLE
... SELECT statement.
Now we try to open and lock table to be created at the same time as
the rest of tables used by this statement. If such table does not
exist at this moment we create and place in the table cache special
placeholder for it which prevents its creation or any other usage
by other threads. By doing this we avoid races which existed with
previous approach in which we created, opened and locked target in
separate step without any special protection.
This also allows properly calculate prelocking set in cases when
target table already exists and has some on insert triggers.
Note that we don't employ the same approach for temporary tables
(this is okay as such tables are unaffected by other threads).
Changed create_table_from_items() and methods of select_create
class to implement this approach.
sql/sql_parse.cc:
The new approach to handling of CREATE TABLE ... SELECT for
base tables assumes that all tables (including table to be
created) are opened and (or) locked at the same time.
So in cases when we create base table we have to pass to
open_and_lock_tables() table list which includes target table.
sql/sql_prepare.cc:
The new approach to handling of CREATE TABLE ... SELECT for
base tables assumes that all tables (including table to be
created) are opened and (or) locked at the same time.
So in cases when we create base table we have to pass to
open_and_lock_tables() table list which includes target table.
sql/sql_table.cc:
Changed mysql_create_table(), mysql_create_like_table() and
mysql_alter_table() (in rename case) to obtain exclusive name-lock
on the non-temporary table which is going to be created (to which
we going to rename). This ensures that not only destination table
doesn't exist on disk but also that there are no placeholder in
table cache for it (i.e. there is no CREATE TABLE ... SELECT operation
in progress for it). Note that to avoid deadlocks while taking these
name-locks this code assumes that existence of any record for table in
table cache (even name-lock) means that table exists. Altough such
check can lead to false positives these should occur only in case of
highly concurrent DDL operations on the table and should not break
binary logging.
Renamed mysql_create_table_internal() to mysql_create_table_no_lock()
and made it accessible from other files to give them ability to create
table in situation when name-lock is already obtained or not relevant.
Adjusted calls to reopen_name_locked_table(), which now takes
extra argument, which controls linking of open table into
THD::open_tables list.
Removed redundant setting of table's 'version' field before calls
to close_cached_table(). This function will set it to 0 itself
anyway.
sql/sql_trigger.cc:
reopen_name_locked_tables() now has one more argument which controls
linking of opened table into the THD::open_tables list.
sql/sql_yacc.yy:
The new approach to handling of CREATE TABLE ... SELECT statement
for base tables assumes that all tables including table to be
created are open and (or) locked at the same time. Therefore
we need to set correct lock for target table.
sql/table.h:
Moved declaration of refresh_version variable from mysql_priv.h
to make it accessible from inline methods of TABLE class.
Renamed TABLE::locked_by_flush member to open_placeholder since
now it is also used for taking exclusive name-lock and not only
by flush.
Introduced TABLE::is_name_opened() helper method which can be used
to distinguish TABLE instances corresponding to open tables or
placeholders for them from closed instances (e.g. due to their old
version). Also introduced TABLE::needs_reopen_or_name_lock() helper
which allows to check if TABLE instance corresponds to outdated
version of table or to name-lock placeholder.
Introduced TABLE_LIST::create member which marks elements of
table list corresponds to the table to be created.
Adjusted TABLE_LIST::placeholder() method to take into account
name-lock placeholders for tables to be created (this, for example,
allows to properly handle such placeholders in lock_tables()).
Finally, moved currently unused TABLE::open_next/open_prev
members under ifdef NOT_YET.
mysql-test/r/create_select-big.result:
New BitKeeper file ``mysql-test/r/create_select-big.result''
mysql-test/t/create_select-big.test:
New BitKeeper file ``mysql-test/t/create_select-big.test''
into chilla.local:/home/mydev/mysql-5.1-bug17332
mysys/mf_keycache.c:
Auto merged
mysys/my_static.c:
Auto merged
sql/handler.cc:
Auto merged
sql/sql_table.cc:
Auto merged
storage/myisam/ha_myisam.cc:
Auto merged
into dev3-221.dev.cn.tlan:/home/ngb/mysql/mysql-5.1/mysql-5.1-new-ndb
mysql-test/t/disabled.def:
Auto merged
sql/field.cc:
Auto merged
sql/field.h:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/ha_ndbcluster.h:
Auto merged
sql/handler.cc:
Auto merged
sql/mysqld.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_table.cc:
Auto merged
storage/ndb/src/mgmsrv/ConfigInfo.cpp:
Auto merged
storage/ndb/src/mgmsrv/MgmtSrvr.cpp:
Auto merged
storage/ndb/src/ndbapi/ndberror.c:
Auto merged
storage/ndb/tools/restore/consumer_restore.cpp:
Auto merged
storage/ndb/tools/restore/restore_main.cpp:
Auto merged
into xiphis.org:/home/antony/work2/mysql-5.1-engines.merge
include/my_global.h:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
scripts/mysql_install_db.sh:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_sum.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
sql/table.h:
Auto merged
storage/innobase/handler/ha_innodb.cc:
manual change to new api
tmpdir has uppercase
Fix: don't convert mysql_tmpdir to lower case when building the path to a
temporary table
mysql-test/include/have_lowercase1.inc:
BitKeeper file /benchmarks/ext3/TOSAVE/tsmith/bk/maint/b27653/50/mysql-test/include/have_lowercase1.inc
mysql-test/r/lowercase1.require:
BitKeeper file /benchmarks/ext3/TOSAVE/tsmith/bk/maint/b27653/50/mysql-test/r/lowercase1.require
mysql-test/r/lowercase_mixed_tmpdir.result:
BitKeeper file /benchmarks/ext3/TOSAVE/tsmith/bk/maint/b27653/50/mysql-test/r/lowercase_mixed_tmpdir.result
mysql-test/t/lowercase_mixed_tmpdir-master.opt:
BitKeeper file /benchmarks/ext3/TOSAVE/tsmith/bk/maint/b27653/50/mysql-test/t/lowercase_mixed_tmpdir-master.opt
mysql-test/t/lowercase_mixed_tmpdir-master.sh:
BitKeeper file /benchmarks/ext3/TOSAVE/tsmith/bk/maint/b27653/50/mysql-test/t/lowercase_mixed_tmpdir-master.sh
mysql-test/t/lowercase_mixed_tmpdir.test:
BitKeeper file /benchmarks/ext3/TOSAVE/tsmith/bk/maint/b27653/50/mysql-test/t/lowercase_mixed_tmpdir.test
sql/sql_table.cc:
When building the path for a temporary table file, do not
convert mysql_tmpdir to lower case; lower_case_table_names
should not apply to mysql_tmpdir.
into chilla.local:/home/mydev/mysql-5.1-wl2936-two
client/mysql.cc:
Auto merged
client/mysqltest.c:
Auto merged
include/my_global.h:
Auto merged
include/my_sys.h:
Auto merged
mysql-test/lib/mtr_cases.pl:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/ndb_dd_basic.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/t/ndb_dd_basic.test:
Auto merged
mysql-test/t/variables.test:
Auto merged
mysys/hash.c:
Auto merged
sql/event_queue.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_sum.cc:
Auto merged
sql/log.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/opt_range.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_cache.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_connect.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_repl.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/structs.h:
Auto merged
sql/table.cc:
Auto merged
storage/innobase/handler/ha_innodb.cc:
Auto merged
storage/innobase/handler/ha_innodb.h:
Auto merged
include/typelib.h:
WL#2936 - Falcon & MySQL plugin interface: server variables
Manual merge
mysys/typelib.c:
WL#2936 - Falcon & MySQL plugin interface: server variables
Manual merge
into pilot.blaudden:/home/msvensson/mysql/mysql-5.1-maint
mysql-test/r/alter_table.result:
Auto merged
mysql-test/t/alter_table.test:
Auto merged
sql/sql_table.cc:
Auto merged
into dev3-221.dev.cn.tlan:/home/ngb/mysql/mysql-5.1/bug18676
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_table.cc:
Auto merged
- The function build_table_filename() builds up a string unconditionally
using the forward slash as a path separator. Later, when the string is
searched for FN_LIBCHAR by the set_up_table_before_create() function, a
null pointer is returned that is finally used by strlen in the
append_file_to_dir() function which causes the crash.
mysql-test/r/partition.result:
Bug#25141 Crash Server on Partitioning command
- Updated results
mysql-test/t/partition.test:
Bug#25141 Crash Server on Partitioning command
- Enable test on Windows.
- Move failing Windows tests to partition_not_winodws test
sql/sql_table.cc:
Bug#25141 Crash Server on Partitioning command
- Use OS specific path separator when building table_filename
mysql-test/r/partition_not_windows.result:
Bug#25141 Crash Server on Partitioning command
- Non-Windows results.
mysql-test/r/partition_windows.result:
Bug#25141 Crash Server on Partitioning command
- Windows specific tests
mysql-test/t/partition_not_windows.test:
Bug#25141 Crash Server on Partitioning command
- Non-Windows specific partition tests
mysql-test/t/partition_windows.test:
Bug#25141 Crash Server on Partitioning command
- Windows specific partition tests.
into bk-internal.mysql.com:/data0/bk/mysql-5.0-marvel
sql/ha_ndbcluster.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
into bk-internal.mysql.com:/data0/bk/mysql-5.1-marvel
mysql-test/r/strict.result:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
into sergbook.mysql.com:/usr/home/serg/Abk/mysql-5.1-wl2936
client/mysql.cc:
Auto merged
include/my_global.h:
Auto merged
include/my_sys.h:
Auto merged
include/mysql.h:
Auto merged
mysql-test/r/im_utils.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/t/ndb_dd_basic.test:
Auto merged
mysql-test/t/partition_innodb.test:
Auto merged
mysql-test/t/variables.test:
Auto merged
mysys/array.c:
Auto merged
mysys/typelib.c:
Auto merged
sql/event_queue.cc:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/ha_partition.h:
Auto merged
sql/handler.cc:
Auto merged
sql/handler.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_sum.cc:
Auto merged
sql/log.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/set_var.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_cache.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_partition.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_repl.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/table.cc:
Auto merged
sql/table.h:
Auto merged
storage/example/ha_example.cc:
Auto merged
storage/federated/ha_federated.cc:
Auto merged
storage/heap/ha_heap.cc:
Auto merged
storage/innobase/include/trx0trx.h:
Auto merged
storage/myisam/ha_myisam.cc:
Auto merged
storage/myisammrg/ha_myisammrg.cc:
Auto merged
storage/ndb/src/mgmsrv/InitConfigFileParser.cpp:
Auto merged
include/typelib.h:
merged
mysql-test/mysql-test-run.pl:
merged
mysql-test/r/flush2.result:
merged
mysql-test/r/ndb_dd_basic.result:
merged
mysql-test/r/partition_innodb.result:
merged
mysql-test/r/ps_1general.result:
merged
mysql-test/t/ps_1general.test:
merged
sql/ha_ndbcluster.cc:
merged
sql/item_create.cc:
merged
sql/mysqld.cc:
merged
sql/rpl_utility.h:
merged
sql/set_var.cc:
merged
sql/sql_class.cc:
merged
sql/sql_yacc.yy:
merged
storage/innobase/handler/ha_innodb.cc:
merged
storage/innobase/handler/ha_innodb.h:
merged
mysql-test/r/ndb_autodiscover.result:
changes ndbd error code 4009 to mysqld error code 157 when no cluster connection
sql/ha_ndbcluster.cc:
define return codes to ndbcluster_table_exists_in_engine to something useful
sql/handler.cc:
define return codes to ha_table_exists_in_engine to something useful
sql/sql_plugin.cc:
Add a comment
sql/sql_table.cc:
clearly define what happens on create table if exists/not exists/not connected to engine
storage/ndb/src/ndbapi/ndberror.c:
map 4009 ndb error code to 157 mysqld error code
into ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-5.0-marvel
client/mysqldump.c:
Auto merged
mysql-test/t/sp.test:
Auto merged
mysys/my_malloc.c:
Auto merged
mysys/my_static.c:
Auto merged
mysys/safemalloc.c:
Auto merged
ndb/src/mgmclient/CommandInterpreter.cpp:
Auto merged
sql/ha_archive.cc:
Auto merged
sql/ha_innodb.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/log.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql-common/client.c:
Auto merged
sql/sp.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/table.cc:
Auto merged
sql-common/my_time.c:
Auto merged
mysql-test/r/sp.result:
Merged from main 5.0
sql/sql_load.cc:
Merged from main 5.0
into olga.mysql.com:/home/igor/mysql-5.1-opt
mysql-test/r/distinct.result:
Auto merged
mysql-test/r/row.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/r/strict.result:
Auto merged
mysql-test/t/select.test:
Auto merged
mysql-test/t/strict.test:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/item_cmpfunc.cc:
Manual merge
into ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-5.1-marvel
client/mysqlcheck.c:
Auto merged
client/mysqldump.c:
Auto merged
include/my_time.h:
Auto merged
mysql-test/r/date_formats.result:
Auto merged
mysql-test/r/grant.result:
Auto merged
mysql-test/r/sp.result:
Auto merged
mysql-test/r/type_date.result:
Auto merged
mysql-test/r/type_datetime.result:
Auto merged
mysql-test/t/grant.test:
Auto merged
mysql-test/t/sp.test:
Auto merged
mysys/my_malloc.c:
Auto merged
mysys/my_static.c:
Auto merged
mysys/safemalloc.c:
Auto merged
sql/event_queue.cc:
Auto merged
sql/field.cc:
Auto merged
sql/field.h:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/log.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/set_var.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sp.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_db.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_repl.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/table.cc:
Auto merged
sql-common/client.c:
Auto merged
sql-common/my_time.c:
Auto merged
sql/time.cc:
Auto merged
storage/archive/ha_archive.cc:
Auto merged
storage/innobase/handler/ha_innodb.cc:
Auto merged
storage/ndb/src/mgmclient/CommandInterpreter.cpp:
Auto merged
tests/mysql_client_test.c:
Auto merged
client/client_priv.h:
Manual merge with main 5.1 source.
sql/event_data_objects.cc:
Manual merge with main 5.1 source.
sql/event_db_repository.cc:
Manual merge with main 5.1 source.
sql/mysqld.cc:
Manual merge with main 5.1 source.
sql/sql_load.cc:
Manual merge with main 5.1 source.
sql/sql_parse.cc:
Manual merge with main 5.1 source.
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-5.1-opt
client/mysqldump.c:
Auto merged
mysql-test/r/rpl_packet.result:
Auto merged
mysql-test/r/sp.result:
Auto merged
mysql-test/t/rpl_packet.test:
Auto merged
sql/field.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sp.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sp_head.h:
Auto merged
sql/sql_partition.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/share/errmsg.txt:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
storage/innobase/handler/ha_innodb.cc:
Auto merged
mysql-test/r/create.result:
SCCS merged
mysql-test/t/create.test:
merging
mysql-test/t/disabled.def:
merging
sql/events.cc:
merging
sql/sql_parse.cc:
SCCS merged
into mysql.com:/d2/hf/mrg/mysql-5.1-opt
mysql-test/r/order_by.result:
Auto merged
mysql-test/r/type_set.result:
Auto merged
mysql-test/t/order_by.test:
Auto merged
sql/field.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.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 dev3-240.dev.cn.tlan:/home/justin.he/mysql/mysql-5.1/mysql-5.1-new-ndb-bj.merge
sql/handler.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
storage/ndb/src/mgmclient/CommandInterpreter.cpp:
Auto merged
storage/ndb/src/mgmsrv/ConfigInfo.cpp:
Auto merged
storage/ndb/src/ndbapi/NdbScanFilter.cpp:
Auto merged
sql/ha_ndbcluster.cc:
merge
mysql-test/r/ndb_autodiscover.result:
recovery for bug#18676 merge in 5.0
sql/ha_ndbcluster.cc:
recovery for bug#18676 merge in 5.0
sql/handler.cc:
recovery for bug#18676 merge in 5.0
sql/sql_table.cc:
recovery for bug#18676 merge in 5.0
into dev3-221.dev.cn.tlan:/home/ngb/mysql/mysql-5.1/bug18676
mysql-test/r/ndb_autodiscover.result:
Auto merged
sql/handler.cc:
Auto merged
storage/ndb/src/common/transporter/TCP_Transporter.cpp:
Auto merged
storage/ndb/src/mgmclient/CommandInterpreter.cpp:
Auto merged
sql/ha_ndbcluster.cc:
merge 5.0-ndb-bj for bug#18676 into 5.1-ndb-bj
sql/sql_table.cc:
merge 5.0-ndb-bj for bug#18676 into 5.1-ndb-bj
into bk-internal.mysql.com:/data0/bk/mysql-5.0-marvel
client/mysql.cc:
Auto merged
heap/hp_write.c:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item.cc:
Auto merged
sql/mysqld.cc:
Auto merged
sql/opt_range.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
into ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-5.1-marvel
mysys/my_pread.c:
Auto merged
mysys/thr_alarm.c:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/log.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/opt_range.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
storage/heap/hp_write.c:
Auto merged
mysql-test/t/mysqlbinlog2.test:
SCCS merged
client/mysql.cc:
Auto merged
client/mysqlbinlog.cc:
Auto merged
sql/event_db_repository.cc:
Auto merged
sql/item.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_show.cc:
Auto merged
client/mysqldump.c:
fixed typo
include/mysql_com.h:
added new constants SYSTEM_CHARSET_MBMAXLEN, NAME_CHAR_LEN, USERNAME_CHAR_LENGTH
increased NAME_LEN, USERNAME_LENGTH
mysql-test/r/create.result:
result fix
mysql-test/r/grant.result:
result fix
mysql-test/r/mysql.result:
result fix
mysql-test/r/sp.result:
result fix
mysql-test/t/create.test:
test case
mysql-test/t/grant.test:
test case
sql/events.cc:
NAME_LEN is replaced with NAME_CHAR_LEN
sql/item_strfunc.h:
fixed calculation of max_length
sql/mysql_priv.h:
check_string_length function is replaced with check_string_byte_length
added new function check_string_char_length
sql/sp.cc:
NAME_LEN is replaced with NAME_CHAR_LEN
sql/sp_head.cc:
NAME_LEN is replaced with NAME_CHAR_LEN
sql/sp_head.h:
changed parameter of 'check_routine_name' function
sql/sql_class.cc:
NAME_LEN is replaced with NAME_CHAR_LEN
sql/share/errmsg.txt:
increased argument lengths according to new constants
sql/sql_parse.cc:
removed unnecessary checks
added function 'check_string_char_length'
sql/sql_plugin.cc:
check that name is not longer than NAME_CHAR_LEN symbols
sql/sql_show.cc:
NAME_LEN is replaced with NAME_CHAR_LEN
sql/sql_table.cc:
check that key name is not longer than NAME_LEN symbols
sql/sql_udf.cc:
check that udf name is not longer than NAME_CHAR_LEN symbols
sql/sql_yacc.yy:
check that user name is not longer than USERNAME_CHAR_LENGTH symbols
sql/table.cc:
check that db or table or column name is not longer than NAME_LEN symbols
storage/innobase/handler/ha_innodb.cc:
removed unnecessary multiplication
tests/mysql_client_test.c:
NAME_LEN is replaced with NAME_CHAR_LEN
mysql-test/r/ndb_autodiscover.result:
changes ndbd error code to mysqld error code when no cluster connection
sql/ha_ndbcluster.cc:
map 4009 error code to mysql not connected error
sql/handler.cc:
define return codes to ha_table_exists_in_engine to something useful
NOTE: in 5.1 this should call a handlerton method, not horrible ifdef ndb stuff
sql/sql_table.cc:
clearly define what happens on create table if exits/not exists/not connected to engine
added the check for unique elements count in SET
mysql-test/r/type_set.result:
test result
mysql-test/t/type_set.test:
test case
sql/field.cc:
removed the check for elements count in SET
sql/sql_table.cc:
added the check for unique elements count in SET
