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Commit Graph

2236 Commits

Author SHA1 Message Date
Alexander Nozdrin
e642701c32 Manual merge from mysql-trunk.
Conflicts:
  - mysql-test/suite/rpl/r/rpl_stm_mixing_engines.result
2010-04-27 13:58:21 +04:00
Alexander Nozdrin
d328d5be33 Manual merge from mysql-trunk.
Conflicts:
  - mysql-test/suite/rpl/r/rpl_stm_mixing_engines.result
2010-04-27 13:58:21 +04:00
Alexey Kopytov
fa3b2dcb83 Manual merge of mysql-5.1-bugteam to
mysql-trunk-merge.

Conflicts:

Text conflict in sql/sql_priv.h
2010-04-19 16:09:44 +04:00
Alexey Kopytov
ee09f97211 Manual merge of mysql-5.1-bugteam to
mysql-trunk-merge.

Conflicts:

Text conflict in sql/sql_priv.h
2010-04-19 16:09:44 +04:00
Alfranio Correia
2b89bd9f5e auto-merge mysql-trunk-bugfixing (local) --> mysql-trunk-bugfixing 2010-04-19 12:05:07 +01:00
Alfranio Correia
de3e233b8a auto-merge mysql-trunk-bugfixing (local) --> mysql-trunk-bugfixing 2010-04-19 12:05:07 +01:00
Sergei Golubchik
e24e1668bc MWL#43 CREATE TABLE options (by Sanja)
Docs/sp-imp-spec.txt:
  New sql_mode added.
include/my_base.h:
  Flag in frm of create options.
libmysqld/CMakeLists.txt:
  New files added.
libmysqld/Makefile.am:
  New files added.
mysql-test/r/events_bugs.result:
  New sql_mode added.
mysql-test/r/information_schema.result:
  New sql_mode added.
mysql-test/r/sp.result:
  New sql_mode added.
mysql-test/r/system_mysql_db.result:
  New sql_mode added.
mysql-test/suite/funcs_1/r/is_columns_mysql.result:
  New sql_mode added.
mysql-test/suite/funcs_1/r/is_columns_mysql_embedded.result:
  New sql_mode added.
mysql-test/t/events_bugs.test:
  New sql_mode added.
mysql-test/t/sp.test:
  New sql_mode added.
scripts/mysql_system_tables.sql:
  New sql_mode added.
scripts/mysql_system_tables_fix.sql:
  New sql_mode added.
sql/CMakeLists.txt:
  New files added.
sql/Makefile.am:
  New files added.
sql/event_db_repository.cc:
  New sql_mode added.
sql/field.cc:
  Create options support added.
sql/field.h:
  Create options support added.
sql/ha_partition.cc:
  Create options support added.
sql/handler.cc:
  Create options support added.
sql/handler.h:
  Create options support added.
sql/log_event.h:
  New sql_mode added.
sql/mysql_priv.h:
  New sql_mode added.
sql/mysqld.cc:
  New sql_mode added.
sql/share/errmsg.txt:
  New error messages added.
sql/sp.cc:
  New sql_mode added.
sql/sp_head.cc:
  Create options support added.
sql/sql_class.cc:
  Create options support added.
  Debug added.
sql/sql_class.h:
  Create options support added.
sql/sql_insert.cc:
  my_safe_a* moved to mysqld_priv.h
sql/sql_lex.h:
  Create options support added.
sql/sql_parse.cc:
  Create options support added.
sql/sql_show.cc:
  Create options support added.
sql/sql_table.cc:
  Create options support added.
sql/sql_view.cc:
  New sql_mode added.
sql/sql_yacc.yy:
  Create options support added.
sql/structs.h:
  Create options support added.
sql/table.cc:
  Create options support added.
sql/table.h:
  Create options support added.
sql/unireg.cc:
  Create options support added.
storage/example/ha_example.cc:
  Create options example.
storage/example/ha_example.h:
  Create options example.
storage/pbxt/src/discover_xt.cc:
  Create options support added.
2010-04-08 14:10:05 +02:00
Alexey Kopytov
3df8e88dd8 Manual merge of mysql-5.1-bugteam into mysql-trunk-merge.
Conflicts:

Text conflict in mysql-test/suite/binlog/r/binlog_row_mix_innodb_myisam.result
Text conflict in sql/log.cc
Text conflict in sql/set_var.cc
Text conflict in sql/sql_class.cc
2010-04-03 21:35:51 +04:00
Alexey Kopytov
7320a95808 Manual merge of mysql-5.1-bugteam into mysql-trunk-merge.
Conflicts:

Text conflict in mysql-test/suite/binlog/r/binlog_row_mix_innodb_myisam.result
Text conflict in sql/log.cc
Text conflict in sql/set_var.cc
Text conflict in sql/sql_class.cc
2010-04-03 21:35:51 +04:00
Mats Kindahl
23d8586dbf WL#5030: Split and remove mysql_priv.h
This patch:

- Moves all definitions from the mysql_priv.h file into
  header files for the component where the variable is
  defined
- Creates header files if the component lacks one
- Eliminates all include directives from mysql_priv.h
- Eliminates all circular include cycles
- Rename time.cc to sql_time.cc
- Rename mysql_priv.h to sql_priv.h
2010-03-31 16:05:33 +02:00
Mats Kindahl
e409d6f69c WL#5030: Split and remove mysql_priv.h
This patch:

- Moves all definitions from the mysql_priv.h file into
  header files for the component where the variable is
  defined
- Creates header files if the component lacks one
- Eliminates all include directives from mysql_priv.h
- Eliminates all circular include cycles
- Rename time.cc to sql_time.cc
- Rename mysql_priv.h to sql_priv.h
2010-03-31 16:05:33 +02:00
Alfranio Correia
671f8768bb auto-merge mysql-trunk-bugfixing (local) --> mysql-trunk-bugfixing 2010-03-31 14:30:24 +01:00
Alfranio Correia
4d71a007ba auto-merge mysql-trunk-bugfixing (local) --> mysql-trunk-bugfixing 2010-03-31 14:30:24 +01:00
Alfranio Correia
41c642e634 BUG#51291 Unfortunate effect around variable binlog_direct_non_transactional_updates
BUG#46364 introduced the flag binlog_direct_non_transactional_updates which
would make N-changes to be written to the binary log upon committing the
statement when "ON". On the other hand, when "OFF" the option was supposed
to mimic the behavior in 5.1. However, the implementation was not mimicking
the behavior correctly and the following bugs popped up:

  Case #1: N-changes executed within a transaction would go into
           the S-cache. When later in the same transaction a
           T-change occurs, N-changes following it were written
           to the T-cache instead of the S-cache. In some cases,
           this raises problems. For example, a
           Table_map_log_event being written initially into the
           S-cache, together with the initial N-changes, would be
           absent from the T-cache. This would log N-changes
           orphaned from a Table_map_log_event (thence discarded
           at the slave). (MIXED and ROW)

   Case #2: When rolling back a transaction, the N-changes that
            might be in the T-cache were disregarded and
            truncated along with the T-changes. (MIXED and ROW)

   Case #3: When a MIXED statement (TN) is ahead of any other
            T-changes in the transaction and it fails, it is kept
            in the T-cache until the transaction ends. This is
            not the case in 5.1 or Betony (5.5.2). In these, the
            failed TN statement would be written to the binlog at
            the same instant it had failed and not deferred until
            transaction end. (SBR)

To fix these problems, we have decided to do what follows:

   For Case #1 and #2, we circumvent them:

      1. by not letting binlog_direct_non_transactional_updates
         affect MIXED and RBR. These modes will keep the behavior
         provided by WL#2687. Although this will make Celosia to
         behave differently from 5.1, an execution will be always
         safe under such modes in the sense that slaves will never
         go out sync. In 5.1, using either MIXED or ROW while
         mixing N-statements and T-statements was not safe.

   For Case #3, we don't actually fix it. We:

      1. keep it and make all MIXED statements whether they end
         up failing or not or whether they are up front in the
         transaction or after some transactional change to always
         be stored in the T-cache. This means that it is written
         to the binary log on transaction commit/rollback only.

      2. We make the warning message even more specific about the
         MIXED statement and SBR.

mysql-test/extra/rpl_tests/rpl_mixing_engines.test:
  Updated the test case to avoid checking inconsistencies between the master and slave
  when session.binlog_direct_non_transactional_updates is ON and the format is statement.
  
  In this scenario, they will diverge because a counter (within a triger) is incremented
  and associated to the issued statement. However, an n-statement is logged ahead of
  the transaction and thus is not executed by the same order in the slave and thus gets
  a different value from the counter.
mysql-test/suite/binlog/r/binlog_multi_engine.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
mysql-test/suite/binlog/r/binlog_stm_mix_innodb_myisam.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
mysql-test/suite/ndb/r/ndb_binlog_format.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
mysql-test/suite/rpl/r/rpl_concurrency_error.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
mysql-test/suite/rpl/r/rpl_stm_binlog_max_cache_size.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
mysql-test/suite/rpl/r/rpl_stm_mixing_engines.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
mysql-test/suite/rpl/r/rpl_stm_stop_middle_group.result:
  Updated the test case with the new error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
sql/log.cc:
  Checked if either a trx-cache or a non-trx-cache should be used. 
  
  If bin_log_direct_non_trans_update is active or the format is either
  MIXED or ROW, the cache to be used depends on the flag is_transactional.
  
  When the format is STMT, the non-trx-cache should be used if the statement
  is non-transactional and the trx-cache is empty, i.e. if any transactional
  statement has not committed yet. Otherwise, the trx-cache should be used.
sql/share/errmsg-utf8.txt:
  Added the new unsafe error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
sql/sql_class.cc:
  Started printing ER_BINLOG_UNSAFE_MIXED_STATEMENT, when there
  is a mixed-statement.
  
  Organized the names of the variables and added comments.
sql/sql_lex.cc:
  Added the new unsafe error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
sql/sql_lex.h:
  Added the new unsafe error ER_BINLOG_UNSAFE_MIXED_STATEMENT.
2010-03-31 14:22:47 +01:00
Alfranio Correia
7827688f23 BUG#51291 Unfortunate effect around variable binlog_direct_non_transactional_updates
BUG#46364 introduced the flag binlog_direct_non_transactional_updates which
would make N-changes to be written to the binary log upon committing the
statement when "ON". On the other hand, when "OFF" the option was supposed
to mimic the behavior in 5.1. However, the implementation was not mimicking
the behavior correctly and the following bugs popped up:

  Case #1: N-changes executed within a transaction would go into
           the S-cache. When later in the same transaction a
           T-change occurs, N-changes following it were written
           to the T-cache instead of the S-cache. In some cases,
           this raises problems. For example, a
           Table_map_log_event being written initially into the
           S-cache, together with the initial N-changes, would be
           absent from the T-cache. This would log N-changes
           orphaned from a Table_map_log_event (thence discarded
           at the slave). (MIXED and ROW)

   Case #2: When rolling back a transaction, the N-changes that
            might be in the T-cache were disregarded and
            truncated along with the T-changes. (MIXED and ROW)

   Case #3: When a MIXED statement (TN) is ahead of any other
            T-changes in the transaction and it fails, it is kept
            in the T-cache until the transaction ends. This is
            not the case in 5.1 or Betony (5.5.2). In these, the
            failed TN statement would be written to the binlog at
            the same instant it had failed and not deferred until
            transaction end. (SBR)

To fix these problems, we have decided to do what follows:

   For Case #1 and #2, we circumvent them:

      1. by not letting binlog_direct_non_transactional_updates
         affect MIXED and RBR. These modes will keep the behavior
         provided by WL#2687. Although this will make Celosia to
         behave differently from 5.1, an execution will be always
         safe under such modes in the sense that slaves will never
         go out sync. In 5.1, using either MIXED or ROW while
         mixing N-statements and T-statements was not safe.

   For Case #3, we don't actually fix it. We:

      1. keep it and make all MIXED statements whether they end
         up failing or not or whether they are up front in the
         transaction or after some transactional change to always
         be stored in the T-cache. This means that it is written
         to the binary log on transaction commit/rollback only.

      2. We make the warning message even more specific about the
         MIXED statement and SBR.
2010-03-31 14:22:47 +01:00
Sergei Golubchik
291fd96983 pluggable auth with plugin examples
Makefile.am:
  add new API files to the check_abi rule,
  remove duplicates
client/CMakeLists.txt:
  now a client can use dlopen too
client/Makefile.am:
  be csh-friendly
include/my_global.h:
  add dummy plugs for dlopen and co.
  for the code that needs them to work in static builds
mysys/Makefile.am:
  be csh-friendly
plugin/auth/dialog.c:
  typo fixed
2010-03-29 17:13:53 +02:00
unknown
4775601012 Bug #50095 Multi statement including CREATE EVENT causes rotten binlog entry
The log event of 'CREATE EVENT' was being binlogged with garbage
at the end of the query if 'CREATE EVENT' is followed by another SQL statement
and they were executed as one command.
for example:
    DELIMITER |;
    CREATE EVENT e1 ON EVERY DAY DO SELECT 1; SELECT 'a';
    DELIMITER ;|
When binlogging 'CREATE EVENT', we always create a new statement with definer
and write it into the log event. The new statement is made from cpp_buf(preprocessed buffer).
which is not a c string(end with '\0'), but it is copied as a c string.

In this patch, cpp_buf is copied with its length.
2010-03-28 16:37:47 +08:00
8d22c5f3ef Bug #50095 Multi statement including CREATE EVENT causes rotten binlog entry
The log event of 'CREATE EVENT' was being binlogged with garbage
at the end of the query if 'CREATE EVENT' is followed by another SQL statement
and they were executed as one command.
for example:
    DELIMITER |;
    CREATE EVENT e1 ON EVERY DAY DO SELECT 1; SELECT 'a';
    DELIMITER ;|
When binlogging 'CREATE EVENT', we always create a new statement with definer
and write it into the log event. The new statement is made from cpp_buf(preprocessed buffer).
which is not a c string(end with '\0'), but it is copied as a c string.

In this patch, cpp_buf is copied with its length.
2010-03-28 16:37:47 +08:00
Sergey Petrunya
7df026676b Merge MariaDB-5.2 -> MariaDB 5.3 2010-03-20 15:01:47 +03:00
Alexander Nozdrin
b3018e8613 Manual merge from mysql-trunk-merge.
Conflicts:
  - client/mysql.cc
  - client/mysqldump.c
  - configure.in
  - mysql-test/r/csv.result
  - mysql-test/r/func_time.result
  - mysql-test/r/show_check.result
  - mysql-test/r/sp-error.result
  - mysql-test/r/sp.result
  - mysql-test/r/sp_trans.result
  - mysql-test/r/type_blob.result
  - mysql-test/r/type_timestamp.result
  - mysql-test/r/warnings.result
  - mysql-test/suite/rpl/r/rpl_sp.result
  - sql/mysql_priv.h
  - sql/mysqld.cc
  - sql/sp.cc
  - sql/sql_base.cc
  - sql/sql_table.cc
  - sql/sql_trigger.cc
  - sql/sql_view.cc
  - sql/table.h
  - sql/share/errmsg.txt
  - mysql-test/suite/sys_vars/r/log_bin_trust_routine_creators_basic.result
2010-02-24 16:52:27 +03:00
Alexander Nozdrin
04b8cb1882 Manual merge from mysql-trunk-merge.
Conflicts:
  - client/mysql.cc
  - client/mysqldump.c
  - configure.in
  - mysql-test/r/csv.result
  - mysql-test/r/func_time.result
  - mysql-test/r/show_check.result
  - mysql-test/r/sp-error.result
  - mysql-test/r/sp.result
  - mysql-test/r/sp_trans.result
  - mysql-test/r/type_blob.result
  - mysql-test/r/type_timestamp.result
  - mysql-test/r/warnings.result
  - mysql-test/suite/rpl/r/rpl_sp.result
  - sql/mysql_priv.h
  - sql/mysqld.cc
  - sql/sp.cc
  - sql/sql_base.cc
  - sql/sql_table.cc
  - sql/sql_trigger.cc
  - sql/sql_view.cc
  - sql/table.h
  - sql/share/errmsg.txt
  - mysql-test/suite/sys_vars/r/log_bin_trust_routine_creators_basic.result
2010-02-24 16:52:27 +03:00
Alfranio Correia
3fad4e8df1 BUG#49019 Mixing self-logging eng. and regular eng. does not switch to row in mixed mode
Reading from a self-logging engine and updating a transactional engine such as Innodb
generates changes that are written to the binary log in the statement format and may
make slaves diverge. In the mixed mode, such changes should be written to the binary
log in the row format.

Note that the issue does not happen if we mix a self-logging engine and MyIsam
as this case is caught by checking the mixture of non-transactional and transactional
engines.

So, we classify a mixed statement where one reads from NDB and writes into another 
engine as unsafe:

if (multi_engine && flags_some_set & HA_HAS_OWN_BINLOGGING)
  lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE);

mysql-test/suite/rpl_ndb/r/rpl_ndb_mixed_engines_transactions.result:
  Augmented test case to check mixed statements
mysql-test/suite/rpl_ndb/t/rpl_ndb_mixed_engines_transactions.test:
  Augmented test case to check mixed statements
sql/share/errmsg-utf8.txt:
  Added ER_BINLOG_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE
sql/sql_class.cc:
  Redefined flags' name in order to have two sets of flags: (i) flags that are checked when there
  is a write operation; (ii) flags that are checked regardless of the type of the operation.
  
  Classified a mixed statement where one reads from NDB and writes into another engine as unsafe:
  
    if (multi_engine && flags_some_set & HA_HAS_OWN_BINLOGGING)
      lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE);
sql/sql_lex.cc:
  Added error ER_BINLOG_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE
sql/sql_lex.h:
  Added BINLOG_STMT_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE
2010-02-22 03:25:33 +00:00
Alfranio Correia
7194aec8ba BUG#49019 Mixing self-logging eng. and regular eng. does not switch to row in mixed mode
Reading from a self-logging engine and updating a transactional engine such as Innodb
generates changes that are written to the binary log in the statement format and may
make slaves diverge. In the mixed mode, such changes should be written to the binary
log in the row format.

Note that the issue does not happen if we mix a self-logging engine and MyIsam
as this case is caught by checking the mixture of non-transactional and transactional
engines.

So, we classify a mixed statement where one reads from NDB and writes into another 
engine as unsafe:

if (multi_engine && flags_some_set & HA_HAS_OWN_BINLOGGING)
  lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE);
2010-02-22 03:25:33 +00:00
Sergey Petrunya
e0bb2f90a2 Subquery optimization backport:
- Factor out subquery code into sql/opt_subselect.{h,cc}
- Stop using the term "confluent" (was used due to misreading the dictionary)
2010-02-16 00:53:06 +03:00
Alexander Nozdrin
a8ef1bafb1 Manual merge from mysql-next-mr.
Conflicts:
  - sql/log_event.cc
  - sql/sql_class.h
2010-02-15 14:16:49 +03:00
Alexander Nozdrin
6c32fa7357 Manual merge from mysql-next-mr.
Conflicts:
  - sql/log_event.cc
  - sql/sql_class.h
2010-02-15 14:16:49 +03:00
Sergey Petrunya
f4d5521043 BUG#31480: Incorrect result for nested subquery when executed via semi join
- Variant #3 of the fix. It also
 = Unifies code with table elimination's 
 = is able to handle FROM-subquery pullout.
2010-02-12 02:59:58 +03:00
Alexey Kopytov
0888e40fa3 Manual merge of mysql-5.1-bugteam into mysql-trunk-merge.
Conflicts:

Text conflict in .bzr-mysql/default.conf
Text conflict in mysql-test/suite/rpl/r/rpl_slow_query_log.result
Text conflict in mysql-test/suite/rpl/t/rpl_slow_query_log.test
Conflict adding files to server-tools.  Created directory.
Conflict because server-tools is not versioned, but has versioned children.  Versioned directory.
Conflict adding files to server-tools/instance-manager.  Created directory.
Conflict because server-tools/instance-manager is not versioned, but has versioned children.  Versioned directory.
Contents conflict in server-tools/instance-manager/options.cc
Text conflict in sql/mysqld.cc
2010-02-09 12:59:38 +05:00
Alexey Kopytov
017c969896 Manual merge of mysql-5.1-bugteam into mysql-trunk-merge.
Conflicts:

Text conflict in .bzr-mysql/default.conf
Text conflict in mysql-test/suite/rpl/r/rpl_slow_query_log.result
Text conflict in mysql-test/suite/rpl/t/rpl_slow_query_log.test
Conflict adding files to server-tools.  Created directory.
Conflict because server-tools is not versioned, but has versioned children.  Versioned directory.
Conflict adding files to server-tools/instance-manager.  Created directory.
Conflict because server-tools/instance-manager is not versioned, but has versioned children.  Versioned directory.
Contents conflict in server-tools/instance-manager/options.cc
Text conflict in sql/mysqld.cc
2010-02-09 12:59:38 +05:00
Gleb Shchepa
994c0f8308 Bug #45640: optimizer bug produces wrong results
Grouping by a subquery in a query with a distinct aggregate
function lead to a wrong result (wrong and unordered
grouping values).

There are two related problems:

1) The query like this:

   SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) c
   FROM t1 GROUP BY aa

returned wrong result, because the outer reference "t1.a"
in the subquery was substituted with the Item_ref item.

The Item_ref item obtains data from the result_field object
that refreshes once after the end of each group. This data
is not applicable to filesort since filesort() doesn't care
about groups (and doesn't update result_field objects with
copy_fields() and so on). Also that data is not applicable
to group separation algorithm: end_send_group() checks every
record with test_if_group_changed() that evaluates Item_ref
items, but it refreshes those Item_ref-s only after the end
of group, that is a vicious circle and the grouped column
values in the output are shifted.

Fix: if
       a) we grouping by a subquery and
       b) that subquery has outer references to FROM list
          of the grouping query,
     then we substitute these outer references with
     Item_direct_ref like references under aggregate
     functions: Item_direct_ref obtains data directly
     from the current record.

2) The query with a non-trivial grouping expression like:

   SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) c
   FROM t1 GROUP BY aa+0

also returned wrong result, since JOIN::exec() substitutes
references to top-level aliases in SELECT list with Item_copy
caching items. Item_copy items have same refreshing policy
as Item_ref items, so the whole groping expression with
Item_copy inside returns wrong result in filesort() and
end_send_group().

Fix: include aliased items into GROUP BY item tree instead
     of Item_ref references to them.



mysql-test/r/group_by.result:
  Test case for bug #45640
mysql-test/t/group_by.test:
  Test case for bug #45640
sql/item.cc:
  Bug #45640: optimizer bug produces wrong results
  
  Item_field::fix_fields() has been modified to resolve
  aliases in GROUP BY item trees into aliased items instead
  of Item_ref items.
sql/item.h:
  Bug #45640: optimizer bug produces wrong results
  
  - Item::find_item_processor() has been introduced.
  - Item_ref::walk() has been modified to apply processors
    to itself too (not only to referenced item).
sql/mysql_priv.h:
  Bug #45640: optimizer bug produces wrong results
  
  fix_inner_refs() has been modified to accept group_list
  parameter.
sql/sql_lex.cc:
  Bug #45640: optimizer bug produces wrong results
  
  Initialization of st_select_lex::group_fix_field has
  been added.
sql/sql_lex.h:
  Bug #45640: optimizer bug produces wrong results
  
  The st_select_lex::group_fix_field field has been introduced
  to control alias resolution in Itef_fied::fix_fields.
sql/sql_select.cc:
  Bug #45640: optimizer bug produces wrong results
  
  - The fix_inner_refs function has been modified to treat
    subquery outer references like outer fields under aggregate
    functions, if they are included in GROUP BY item tree.
  
  - The find_order_in_list function has been modified to
    fix Item_field alias fields included in the GROUP BY item
    trees in a special manner.
2010-02-06 23:54:30 +04:00
Gleb Shchepa
57e5f8487f Bug #45640: optimizer bug produces wrong results
Grouping by a subquery in a query with a distinct aggregate
function lead to a wrong result (wrong and unordered
grouping values).

There are two related problems:

1) The query like this:

   SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) c
   FROM t1 GROUP BY aa

returned wrong result, because the outer reference "t1.a"
in the subquery was substituted with the Item_ref item.

The Item_ref item obtains data from the result_field object
that refreshes once after the end of each group. This data
is not applicable to filesort since filesort() doesn't care
about groups (and doesn't update result_field objects with
copy_fields() and so on). Also that data is not applicable
to group separation algorithm: end_send_group() checks every
record with test_if_group_changed() that evaluates Item_ref
items, but it refreshes those Item_ref-s only after the end
of group, that is a vicious circle and the grouped column
values in the output are shifted.

Fix: if
       a) we grouping by a subquery and
       b) that subquery has outer references to FROM list
          of the grouping query,
     then we substitute these outer references with
     Item_direct_ref like references under aggregate
     functions: Item_direct_ref obtains data directly
     from the current record.

2) The query with a non-trivial grouping expression like:

   SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) c
   FROM t1 GROUP BY aa+0

also returned wrong result, since JOIN::exec() substitutes
references to top-level aliases in SELECT list with Item_copy
caching items. Item_copy items have same refreshing policy
as Item_ref items, so the whole groping expression with
Item_copy inside returns wrong result in filesort() and
end_send_group().

Fix: include aliased items into GROUP BY item tree instead
     of Item_ref references to them.
2010-02-06 23:54:30 +04:00
Marc Alff
d935204240 Merge mysql-next-mr-marc --> mysql-next-mr-bugfixing 2010-02-05 09:56:55 -07:00
Marc Alff
3630d78e6c Merge mysql-next-mr-marc --> mysql-next-mr-bugfixing 2010-02-05 09:56:55 -07:00
Konstantin Osipov
e7b332ba83 Merge next-mr -> next-4284. 2010-02-05 01:08:08 +03:00
Konstantin Osipov
ad0f1f8021 Merge next-mr -> next-4284. 2010-02-05 01:08:08 +03:00
Alexander Nozdrin
cf55cf596e Manual merge from mysql-5.1-bugteam.
Conflicts:
  - mysql-test/collections/default.experimental
  - mysql-test/suite/rpl/r/rpl_sp.result
2010-02-03 17:01:48 +03:00
Alexander Nozdrin
31ba3bf5cb Manual merge from mysql-5.1-bugteam.
Conflicts:
  - mysql-test/collections/default.experimental
  - mysql-test/suite/rpl/r/rpl_sp.result
2010-02-03 17:01:48 +03:00
Konstantin Osipov
056ac55aa0 Merge next-mr -> next-4284. 2010-02-03 03:06:42 +03:00
Konstantin Osipov
0ce6d93f85 Merge next-mr -> next-4284. 2010-02-03 03:06:42 +03:00
Alexander Nozdrin
59f1be1b63 Revert a patch for Bug#48231, which introduced valgrind warnings.
Original revision:
------------------------------------------------------------
revision-id: li-bing.song@sun.com-20100130124925-o6sfex42b6noyc6x
parent: joro@sun.com-20100129145427-0n79l9hnk0q43ajk
committer: <Li-Bing.Song@sun.com>
branch nick: mysql-5.1-bugteam
timestamp: Sat 2010-01-30 20:49:25 +0800
message:
  Bug #48321  CURRENT_USER() incorrectly replicated for DROP/RENAME USER;
              REVOKE/GRANT; ALTER EVENT.
  
  The following statements support the CURRENT_USER() where a user is needed.
    DROP USER 
    RENAME USER CURRENT_USER() ...
    GRANT ... TO CURRENT_USER()
    REVOKE ... FROM CURRENT_USER()
    ALTER DEFINER = CURRENT_USER() EVENT
  but, When these statements are binlogged, CURRENT_USER() just is binlogged
  as 'CURRENT_USER()', it is not expanded to the real user name. When slave 
  executes the log event, 'CURRENT_USER()' is expand to the user of slave 
  SQL thread, but SQL thread's user name always NULL. This breaks the replication.
  
  After this patch, All above statements are rewritten when they are binlogged.
  The CURRENT_USER() is expanded to the real user's name and host.
------------------------------------------------------------
2010-02-02 16:38:44 +03:00
Alexander Nozdrin
f392eddabc Revert a patch for Bug#48231, which introduced valgrind warnings.
Original revision:
------------------------------------------------------------
revision-id: li-bing.song@sun.com-20100130124925-o6sfex42b6noyc6x
parent: joro@sun.com-20100129145427-0n79l9hnk0q43ajk
committer: <Li-Bing.Song@sun.com>
branch nick: mysql-5.1-bugteam
timestamp: Sat 2010-01-30 20:49:25 +0800
message:
  Bug #48321  CURRENT_USER() incorrectly replicated for DROP/RENAME USER;
              REVOKE/GRANT; ALTER EVENT.
  
  The following statements support the CURRENT_USER() where a user is needed.
    DROP USER 
    RENAME USER CURRENT_USER() ...
    GRANT ... TO CURRENT_USER()
    REVOKE ... FROM CURRENT_USER()
    ALTER DEFINER = CURRENT_USER() EVENT
  but, When these statements are binlogged, CURRENT_USER() just is binlogged
  as 'CURRENT_USER()', it is not expanded to the real user name. When slave 
  executes the log event, 'CURRENT_USER()' is expand to the user of slave 
  SQL thread, but SQL thread's user name always NULL. This breaks the replication.
  
  After this patch, All above statements are rewritten when they are binlogged.
  The CURRENT_USER() is expanded to the real user's name and host.
------------------------------------------------------------
2010-02-02 16:38:44 +03:00
Alexander Nozdrin
0da16c7c2a Manual merge from mysql-5.1-bugteam.
Conflicts:
  - mysql-test/collections/default.experimental
  - mysql-test/suite/rpl/r/rpl_binlog_grant.result
  - mysql-test/suite/rpl/r/rpl_sp.result
  - mysql-test/suite/rpl/t/rpl_binlog_grant.test
  - mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test
2010-01-30 22:13:36 +03:00
Alexander Nozdrin
85c54dddc7 Manual merge from mysql-5.1-bugteam.
Conflicts:
  - mysql-test/collections/default.experimental
  - mysql-test/suite/rpl/r/rpl_binlog_grant.result
  - mysql-test/suite/rpl/r/rpl_sp.result
  - mysql-test/suite/rpl/t/rpl_binlog_grant.test
  - mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test
2010-01-30 22:13:36 +03:00
unknown
d9e9a73e8f Bug #48321 CURRENT_USER() incorrectly replicated for DROP/RENAME USER;
REVOKE/GRANT; ALTER EVENT.

The following statements support the CURRENT_USER() where a user is needed.
  DROP USER 
  RENAME USER CURRENT_USER() ...
  GRANT ... TO CURRENT_USER()
  REVOKE ... FROM CURRENT_USER()
  ALTER DEFINER = CURRENT_USER() EVENT
but, When these statements are binlogged, CURRENT_USER() just is binlogged
as 'CURRENT_USER()', it is not expanded to the real user name. When slave 
executes the log event, 'CURRENT_USER()' is expand to the user of slave 
SQL thread, but SQL thread's user name always NULL. This breaks the replication.

After this patch, All above statements are rewritten when they are binlogged.
The CURRENT_USER() is expanded to the real user's name and host.
2010-01-30 20:49:25 +08:00
788c28aceb Bug #48321 CURRENT_USER() incorrectly replicated for DROP/RENAME USER;
REVOKE/GRANT; ALTER EVENT.

The following statements support the CURRENT_USER() where a user is needed.
  DROP USER 
  RENAME USER CURRENT_USER() ...
  GRANT ... TO CURRENT_USER()
  REVOKE ... FROM CURRENT_USER()
  ALTER DEFINER = CURRENT_USER() EVENT
but, When these statements are binlogged, CURRENT_USER() just is binlogged
as 'CURRENT_USER()', it is not expanded to the real user name. When slave 
executes the log event, 'CURRENT_USER()' is expand to the user of slave 
SQL thread, but SQL thread's user name always NULL. This breaks the replication.

After this patch, All above statements are rewritten when they are binlogged.
The CURRENT_USER() is expanded to the real user's name and host.
2010-01-30 20:49:25 +08:00
Andrei Elkin
8d240586b5 Bug #50192 Strange effect in replication test, trigger, auto_increment
The auto-inc unsafe warning makes sense even though it's just
one auto-inc table could be involved via a trigger or a stored
function.
However its content was not updated by bug@45677 fixes continuing to mention
two tables whereas the fixes refined semantics of replication of auto_increment 
in stored routine.

Fixed with updating the error message, renaming the error and an internal unsafe-condition 
constants.

A documentation notice
======================

      Inserting into an autoincrement column in a stored function or a trigger
      is unsafe for replication.
      Even with just one autoincrement column, if the routine is invoked more than 
      once slave is not guaranteed to execute the statement graph same way as 
      the master.
      And since it's impossible to estimate how many times a routine can be invoked at 
      the query pre-execution phase (see lock_tables), the statement is marked
      pessimistically unsafe. 



mysql-test/suite/binlog/r/binlog_stm_unsafe_warning.result:
  results updated to include the expected unsafe warning.
mysql-test/suite/binlog/t/binlog_stm_unsafe_warning.test:
  regression test for bug#50192 to diplaying the unsafe warning comes out to the user warning stack.
sql/share/errmsg-utf8.txt:
  Updating the auto-inc unsafe message to correspond to bug@45677 fixes' new sematics.
sql/share/errmsg.txt:
  Updating the auto-inc unsafe message to correspond to bug@45677 fixes' new sematics.
sql/sql_base.cc:
  changing a symbolic name to correspond to updated by bug@45677 fixes new sematics.
sql/sql_lex.cc:
  changing a symbolic name to correspond to updated by bug@45677 fixes new sematics.
sql/sql_lex.h:
  changing a symbolic name to correspond to updated by bug@45677 fixes new sematics
  and description comments.
2010-01-29 15:55:35 +02:00
Andrei Elkin
7db8e76471 Bug #50192 Strange effect in replication test, trigger, auto_increment
The auto-inc unsafe warning makes sense even though it's just
one auto-inc table could be involved via a trigger or a stored
function.
However its content was not updated by bug@45677 fixes continuing to mention
two tables whereas the fixes refined semantics of replication of auto_increment 
in stored routine.

Fixed with updating the error message, renaming the error and an internal unsafe-condition 
constants.

A documentation notice
======================

      Inserting into an autoincrement column in a stored function or a trigger
      is unsafe for replication.
      Even with just one autoincrement column, if the routine is invoked more than 
      once slave is not guaranteed to execute the statement graph same way as 
      the master.
      And since it's impossible to estimate how many times a routine can be invoked at 
      the query pre-execution phase (see lock_tables), the statement is marked
      pessimistically unsafe.
2010-01-29 15:55:35 +02:00
Sergey Petrunya
f47b2d38f6 Subquery optimizations: non-semijoin materialization
- Backport into Maria DB 5.3, part 1
2010-01-28 16:48:33 +03:00
Marc Alff
0d6a218074 Bug#34455 Ambiguous foreign keys syntax is accepted
Backport from 6.0 to 5.5
2010-01-25 04:55:31 -07:00
Marc Alff
4428409ddb Bug#34455 Ambiguous foreign keys syntax is accepted
Backport from 6.0 to 5.5
2010-01-25 04:55:31 -07:00