The problem was that we restored SQL_CACHE, SQL_NO_CACHE flags in SELECT
statement from internal structures based on value set later at runtime, not
the original value set by the user.
The solution is to remember that original value.
mysql-test/r/auto_increment.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_compress.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_math.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_system.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_time.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/information_schema.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/query_cache.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/rpl_get_lock.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/rpl_master_pos_wait.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/show_check.result:
Add result for bug#17203.
mysql-test/r/subselect.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/type_blob.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/variables.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/view.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/t/show_check.test:
Add test case for bug#17203.
sql/sql_lex.cc:
Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
sql/sql_lex.h:
Add SELECT_LEX::sql_cache field to store original user setting.
sql/sql_select.cc:
Output SQL_CACHE and SQL_NO_CACHE depending on stored original user setting.
sql/sql_yacc.yy:
Make effect of SQL_CACHE and SQL_NO_CACHE mutually exclusive. Ignore
SQL_CACHE if SQL_NO_CACHE was used. Remember what was set by the user.
Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
new file
mysql-test/r/rpl_ndb_dd_partitions.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/t/rpl_ndb_dd_partitions.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
new file
mysql-test/t/ndb_partition_error.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/t/ndb_partition_key.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/t/ndb_partition_list.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/t/ndb_partition_range.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/t/ndb_blob_partition.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/t/ndb_dd_backuprestore.test:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/ndb_partition_error.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/ndb_partition_key.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/ndb_partition_list.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/ndb_partition_range.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/ndb_blob_partition.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/ndb_dd_backuprestore.result:
Adding back ndb partition tests from mysql-test-extra per tomas and clavin
mysql-test/r/func_sapdb.result:
test cases for date range edge cases added
mysql-test/r/func_time.result:
test cases for date range edge cases added
mysql-test/t/func_sapdb.test:
test cases for date range edge cases added
mysql-test/t/func_time.test:
test cases for date range edge cases added
'SELECT DISTINCT a,b FROM t1' should not use temp table if there is unique
index (or primary key) on a.
There are a number of other similar cases that can be calculated without the
use of a temp table : multi-part unique indexes, primary keys or using GROUP BY
instead of DISTINCT.
When a GROUP BY/DISTINCT clause contains all key parts of a unique
index, then it is guaranteed that the fields of the clause will be
unique, therefore we can optimize away GROUP BY/DISTINCT altogether.
This optimization has two effects:
* there is no need to create a temporary table to compute the
GROUP/DISTINCT operation (or the temporary table will be smaller if only GROUP
is removed and DISTINCT stays or if DISTINCT is removed and GROUP BY stays)
* this causes the statement in effect to become updatable in Connector/Java
because the result set columns will be direct reference to the primary key of
the table (instead to the temporary table that it currently references).
Implemented a check that will optimize away GROUP BY/DISTINCT for queries like
the above.
Currently it will work only for single non-constant table in the FROM clause.
mysql-test/r/distinct.result:
Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
- test case
mysql-test/t/distinct.test:
Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
- test case
sql/sql_select.cc:
Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
- disable GROUP BY if contains the fields of a unique index.
Fix a minor issue with Bug#16206 (bdb.test failed if the tree is compiled
without blackhole).
include/my_sys.h:
Change declaration of my_strdup_with_length to accept const char *,
not const byte *: in 5 places out of 6 where this function is used,
it's being passed char *, not byte *
mysql-test/r/bdb.result:
Remove dependency on an optional engine (updated test results).
mysql-test/t/bdb.test:
Remove dependency on an optional engine.
mysys/my_malloc.c:
my_strdup_with_length: const byte * -> const char *
mysys/safemalloc.c:
my_strdup_with_length: const byte * -> const char *
sql/ha_federated.cc:
my_strdup_with_length: const byte * -> const char *
sql/log_event.cc:
my_strdup_with_length: const byte * -> const char *
sql/set_var.cc:
my_strdup_with_length: const byte * -> const char *
sql/sql_class.h:
Change db_length type to uint from uint32 (see also table.h)
sql/table.h:
Change the type of db_length to uint from uint32: LEX_STRING uses uint for
length, we need a small and consistent set of types to store length to
minimize cast and compile failures.
mysql-test/r/type_newdecimal.result:
Fix for bug #18014: data loss caused by altering decimal fields.
- test result
mysql-test/t/type_newdecimal.test:
Fix for bug #18014: data loss caused by altering decimal fields.
- test case
sql/field.cc:
Fix for bug #18014: data loss caused by altering decimal fields.
- Field_new_decimal::is_equal() introduced for proper comparisons of the decimal field definitions.
sql/field.h:
Fix for bug #18014: data loss caused by altering decimal fields.
- Field_new_decimal::is_equal() introduced for proper comparisons of the decimal field definitions.
When building the UPDATE query to send to the remote server, the
federated storage engine built the query incorrectly if it was updating
a field to be NULL.
Thanks to Bjrn Steinbrink for an initial patch for the problem.
mysql-test/r/federated.result:
Add new results
mysql-test/t/federated.test:
Add new regression test
sql/ha_federated.cc:
Fix logic of how fields are added to SET and WHERE clauses of an
UPDATE statement. Fields that were NULL were being handled incorrectly.
Also reorganizes the code a little bit so the update of the two
clauses is consistent.
into mysql.com:/opt/local/work/mysql-5.0-17199
mysql-test/r/create.result:
Auto merged
mysql-test/t/create.test:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_db.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
mysql-test/r/sp.result:
SCCS merged
mysql-test/t/sp.test:
SCCS merged
Bug#19022 "Memory bug when switching db during trigger execution"
Bug#17199 "Problem when view calls function from another database."
Bug#18444 "Fully qualified stored function names don't work correctly in
SELECT statements"
Documentation note: this patch introduces a change in behaviour of prepared
statements.
This patch adds a few new invariants with regard to how THD::db should
be used. These invariants should be preserved in future:
- one should never refer to THD::db by pointer and always make a deep copy
(strmake, strdup)
- one should never compare two databases by pointer, but use strncmp or
my_strncasecmp
- TABLE_LIST object table->db should be always initialized in the parser or
by creator of the object.
For prepared statements it means that if the current database is changed
after a statement is prepared, the database that was current at prepare
remains active. This also means that you can not prepare a statement that
implicitly refers to the current database if the latter is not set.
This is not documented, and therefore needs documentation. This is NOT a
change in behavior for almost all SQL statements except:
- ALTER TABLE t1 RENAME t2
- OPTIMIZE TABLE t1
- ANALYZE TABLE t1
- TRUNCATE TABLE t1 --
until this patch t1 or t2 could be evaluated at the first execution of
prepared statement.
CURRENT_DATABASE() still works OK and is evaluated at every execution
of prepared statement.
Note, that in stored routines this is not an issue as the default
database is the database of the stored procedure and "use" statement
is prohibited in stored routines.
This patch makes obsolete the use of check_db_used (it was never used in the
old code too) and all other places that check for table->db and assign it
from THD::db if it's NULL, except the parser.
How this patch was created: THD::{db,db_length} were replaced with a
LEX_STRING, THD::db. All the places that refer to THD::{db,db_length} were
manually checked and:
- if the place uses thd->db by pointer, it was fixed to make a deep copy
- if a place compared two db pointers, it was fixed to compare them by value
(via strcmp/my_strcasecmp, whatever was approproate)
Then this intermediate patch was used to write a smaller patch that does the
same thing but without a rename.
TODO in 5.1:
- remove check_db_used
- deploy THD::set_db in mysql_change_db
See also comments to individual files.
mysql-test/r/create.result:
Modify the result file: a database can never be NULL.
mysql-test/r/ps.result:
Update test results (Bug#17199 et al)
mysql-test/r/sp.result:
Update test results (Bug#17199 et al)
mysql-test/t/create.test:
Update the id of the returned error.
mysql-test/t/ps.test:
Add test coverage for prepared statements and current database. In scope of
work on Bug#17199 "Problem when view calls function from another database."
mysql-test/t/sp.test:
Add a test case for Bug#17199 "Problem when view calls function from another
database." and Bug#18444 "Fully qualified stored function names don't work
correctly in SELECT statements". Test a complementary problem.
sql/item_strfunc.cc:
Touch the code that reads thd->db (cleanup).
sql/log_event.cc:
While we are at it, replace direct access to thd->db with a method.
Should simplify future conversion of THD::db to LEX_STRING.
sql/slave.cc:
While we are at it, replace direct access to thd->db with a method.
Should simplify future conversion of THD::db to LEX_STRING.
sql/slave.h:
Remove a declaration for a method that is used only in one module.
sql/sp.cc:
Rewrite sp_use_new_db: this is a cleanup that I needed in order to understand
this function and ensure that it has no bugs.
sql/sp.h:
Add a new declaration for sp_use_new_db (uses LEX_STRINGs) and a comment.
sql/sp_head.cc:
- drop sp_name_current_db_new - a creator of sp_name class that was used
when sp_name was created for an identifier without an explicitly initialized
database. Now we pass thd->db to constructor of sp_name right in the
parser.
- rewrite sp_head::init_strings: name->m_db is always set now
- use the new variant of sp_use_new_db
- we don't need to update thd->db with SP MEM_ROOT pointer anymore when
parsing a stored procedure, as noone will refer to it (yes!)
sql/sp_head.h:
- remove unneded methods and members
sql/sql_class.h:
- introduce 3 THD methods to work with THD::db:
.set_db to assign the current database
.reset_db to reset the current database (temporarily) or set it to NULL
.opt_copy_db_to - to deep-copy thd->db to a pointer if it's not NULL
sql/sql_db.cc:
While we are at it, replace direct access to thd->db with a method.
Should simplify future conversion of THD::db to LEX_STRING.
sql/sql_insert.cc:
- replace checks with asserts: table_list->db must be always set in the parser.
sql/sql_lex.h:
- add a comment
sql/sql_parse.cc:
- implement the invariant described in the changeset comment.
- remove juggling with lex->sphead in SQLCOM_CREATE_PROCEDURE:
now db_load_routine uses its own LEX object and doesn't damage the main
LEX.
- add DBUG_ASSERT(0) to unused "check_db_used"
sql/sql_table.cc:
- replace a check with an assert (table_ident->db)
sql/sql_trigger.cc:
While we are at it, replace direct access to thd->db with a method.
Should simplify future conversion of THD::db to LEX_STRING.
sql/sql_udf.cc:
- use thd->set_db instead of direct modification of to thd->db
sql/sql_view.cc:
- replace a check with an assert (view->db)
sql/sql_yacc.yy:
- make sure that we always copy table->db or name->db or ident->db or
select_lex->db from thd->db if the former is not set. If thd->db
is not set but is accessed, return an error.
sql/tztime.cc:
- be nice, never copy thd->db by pointer.
Addendum fixes after changing the condition variable
for the global read lock.
The stress test suite revealed some deadlocks. Some were
related to the new condition variable (COND_global_read_lock)
and some were general problems with the global read lock.
It is now necessary to signal COND_global_read_lock whenever
COND_refresh is signalled.
We need to wait for the release of a global read lock if one
is set before every operation that requires a write lock.
But we must not wait if we have locked tables by LOCK TABLES.
After setting a global read lock a thread waits until all
write locks are released.
mysql-test/r/lock_multi.result:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Added test results.
mysql-test/t/lock_multi.test:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Added tests for possible deadlocks that did not occur
with the stress test suite.
mysys/thr_lock.c:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Added a protection against an infinite loop that occurs
with the test case for Bug #20662.
sql/lock.cc:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Signal COND_global_read_lock whenever COND_refresh
is signalled by using the new function broadcast_refresh().
Added the definition of a new function that signals
COND_global_read_lock whenever COND_refresh is signalled.
sql/mysql_priv.h:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Added a declaration for a new function that signals
COND_global_read_lock whenever COND_refresh is signalled.
sql/sql_base.cc:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Signal COND_global_read_lock whenever COND_refresh
is signalled by using the new function broadcast_refresh().
sql/sql_handler.cc:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Signal COND_global_read_lock whenever COND_refresh
is signalled by using the new function broadcast_refresh().
sql/sql_insert.cc:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Removed global read lock handling from inside of
INSERT DELAYED. It is handled on a higher level now.
sql/sql_parse.cc:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Wait for the release of a global read lock if one is set
before every operation that requires a write lock.
But don't wait if locked tables exist already.
sql/sql_table.cc:
Bug#16986 - Deadlock condition with MyISAM tables
Addendum fixes after changing the condition variable
for the global read lock.
Removed global read lock handling from inside of
CREATE TABLE. It is handled on a higher level now.
Signal COND_global_read_lock whenever COND_refresh
is signalled by using the new function broadcast_refresh().
into mysql.com:/opt/local/work/mysql-5.1-runtime
mysql-test/r/sp-prelocking.result:
Auto merged
mysql-test/r/sp.result:
Auto merged
mysql-test/t/sp.test:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
storage/ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
Auto merged
storage/ndb/src/ndbapi/ndberror.c:
Auto merged
strings/ctype-mb.c:
Auto merged
mysql-test/t/sp-prelocking.test:
Manual merge.
into mysql.com:/opt/local/work/mysql-5.1-runtime
mysql-test/r/information_schema.result:
Auto merged
sql/CMakeLists.txt:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/events.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
mysql-test/t/events_microsec.test:
SCCS merged
into mysql.com:/home/tnurnberg/mysql-5.0-maint-18462
mysql-test/r/mysqldump.result:
Auto merged
mysql-test/t/mysqldump.test:
Auto merged
client/mysqldump.c:
SCCS merged
The 250 simultaneous events all accessing the same table caused the
events_stress test to fail due to debug warnings about too many table
waiters. Fixed by using three different tables.
mysql-test/r/events_stress.result:
Use three different MyISAM tables to avoid debug warnings about too many
locks.
mysql-test/t/events_stress.test:
Use three different MyISAM tables to avoid debug warnings about too many
locks.
make sure we can only drop files from correct file group
mysql-test/r/ndb_dd_ddl.result:
add testcase
mysql-test/t/ndb_dd_ddl.test:
add testcase
sql/ha_ndbcluster.cc:
Make sure correct tablespace for dropping datafile
storage/ndb/include/ndbapi/NdbDictionary.hpp:
Cleanup {data/undo}file get{tablespace/logfilegroup}
storage/ndb/src/ndbapi/NdbDictionary.cpp:
Cleanup {data/undo}file get{tablespace/logfilegroup}
storage/ndb/src/ndbapi/NdbDictionaryImpl.hpp:
Cleanup {data/undo}file get{tablespace/logfilegroup}
storage/ndb/tools/restore/consumer_restore.cpp:
Cleanup {data/undo}file get{tablespace/logfilegroup}
into lmy004.:/work/mysql-5.1-runtime-bug16992
mysql-test/t/events.test:
Auto merged
mysql-test/t/events_grant.test:
Auto merged
sql/sql_show.cc:
Auto merged
into perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb
sql/ha_ndbcluster.cc:
Auto merged
storage/ndb/src/kernel/blocks/ERROR_codes.txt:
Auto merged
storage/ndb/src/kernel/blocks/dbdict/Dbdict.cpp:
Auto merged
storage/ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
Auto merged
support-files/mysql.spec.sh:
Auto merged
into mysql.com:/home/emurphy/src/bk-clean/mysql-5.1
mysql-test/mysql-test-run.sh:
Auto merged
mysql-test/valgrind.supp:
Auto merged
mysql-test/r/func_str.result:
Auto merged
mysql-test/r/insert_select.result:
Auto merged
mysql-test/r/myisam.result:
Auto merged
mysql-test/t/func_time.test:
Auto merged
mysql-test/t/myisam.test:
Auto merged
mysql-test/t/select.test:
Auto merged
mysys/Makefile.am:
Auto merged
sql/field.cc:
Auto merged
sql/field.h:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/item_strfunc.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/opt_sum.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_select.cc:
Auto merged
storage/ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
Auto merged
storage/ndb/src/ndbapi/ndberror.c:
Auto merged
include/Makefile.am:
manual merge
mysql-test/r/func_time.result:
manual merge
mysql-test/r/select.result:
manual merge
Start test case with a dummy table create and drop. This ensures that
NDB event subscription is properly set up before the real test starts,
which otherwise could sometimes cause INSERT events to be lost.
mysql-test/r/ndb_binlog_multi.result:
Start test with dummy table create/drop to avoid a race.
mysql-test/t/ndb_binlog_multi.test:
Start test with dummy table create/drop to avoid a race.
Sometimes the helper connection (that is watching for the main connection
to time out) would itself time out first, causing the test to fail.
mysql-test/t/wait_timeout.test:
Increase connection timeout in connection wait_con so we will not loose
the connection that is watching for the real wait_timeout to trigger.
