2009-01-13 14:09:24 +01:00
|
|
|
SET @old_general_log= @@global.general_log;
|
|
|
|
|
SET @old_general_log_file= @@global.general_log_file;
|
|
|
|
|
SET @old_slow_query_log= @@global.slow_query_log;
|
|
|
|
|
SET @old_slow_query_log_file= @@global.slow_query_log_file;
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log= OFF;
|
|
|
|
|
truncate table mysql.general_log;
|
|
|
|
|
truncate table mysql.slow_log;
|
|
|
|
|
show global variables
|
|
|
|
|
where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
|
|
|
|
|
Variable_name = 'general_log' or Variable_name = 'slow_query_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log OFF
|
|
|
|
|
log OFF
|
|
|
|
|
log_slow_queries OFF
|
|
|
|
|
slow_query_log OFF
|
|
|
|
|
flush logs;
|
|
|
|
|
set global general_log= ON;
|
|
|
|
|
create table t1(f1 int);
|
|
|
|
|
select * from mysql.general_log;
|
|
|
|
|
event_time user_host thread_id server_id command_type argument
|
2006-06-22 16:20:29 +02:00
|
|
|
TIMESTAMP USER_HOST # 1 Query create table t1(f1 int)
|
|
|
|
|
TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log= OFF;
|
|
|
|
|
drop table t1;
|
|
|
|
|
select * from mysql.general_log;
|
|
|
|
|
event_time user_host thread_id server_id command_type argument
|
2006-06-22 16:20:29 +02:00
|
|
|
TIMESTAMP USER_HOST # 1 Query create table t1(f1 int)
|
|
|
|
|
TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
|
|
|
|
|
TIMESTAMP USER_HOST # 1 Query set global general_log= OFF
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log= ON;
|
|
|
|
|
flush logs;
|
|
|
|
|
show global variables
|
|
|
|
|
where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
|
|
|
|
|
Variable_name = 'general_log' or Variable_name = 'slow_query_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log ON
|
|
|
|
|
log ON
|
|
|
|
|
log_slow_queries OFF
|
|
|
|
|
slow_query_log OFF
|
2009-01-13 14:09:24 +01:00
|
|
|
# Establish connection con1 (user=root)
|
|
|
|
|
# Switch to connection con1
|
|
|
|
|
set @long_query_time = <long_query_time>;
|
|
|
|
|
set session long_query_time = @long_query_time;
|
|
|
|
|
select sleep(@long_query_time + 1);
|
|
|
|
|
sleep(@long_query_time + 1)
|
2006-06-19 15:30:55 +02:00
|
|
|
0
|
2007-08-08 13:49:19 +02:00
|
|
|
select * from mysql.slow_log where sql_text NOT LIKE '%slow_log%';
|
2006-06-19 15:30:55 +02:00
|
|
|
start_time user_host query_time lock_time rows_sent rows_examined db last_insert_id insert_id server_id sql_text
|
2009-01-13 14:09:24 +01:00
|
|
|
# Switch to connection default
|
2006-06-19 15:30:55 +02:00
|
|
|
set global slow_query_log= ON;
|
2009-01-13 14:09:24 +01:00
|
|
|
# Switch to connection con1
|
|
|
|
|
set session long_query_time = @long_query_time;
|
|
|
|
|
select sleep(@long_query_time + 1);
|
|
|
|
|
sleep(@long_query_time + 1)
|
2006-06-19 15:30:55 +02:00
|
|
|
0
|
2007-08-08 13:49:19 +02:00
|
|
|
select * from mysql.slow_log where sql_text NOT LIKE '%slow_log%';
|
2006-06-19 15:30:55 +02:00
|
|
|
start_time user_host query_time lock_time rows_sent rows_examined db last_insert_id insert_id server_id sql_text
|
2009-01-13 14:09:24 +01:00
|
|
|
TIMESTAMP USER_HOST QUERY_TIME 00:00:00 1 0 test 0 0 1 select sleep(@long_query_time + 1)
|
|
|
|
|
# Switch to connection default
|
2006-06-19 15:30:55 +02:00
|
|
|
show global variables
|
|
|
|
|
where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
|
|
|
|
|
Variable_name = 'general_log' or Variable_name = 'slow_query_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log ON
|
|
|
|
|
log ON
|
|
|
|
|
log_slow_queries ON
|
|
|
|
|
slow_query_log ON
|
|
|
|
|
set global general_log= ON;
|
|
|
|
|
set global general_log= OFF;
|
|
|
|
|
set global general_log= OFF;
|
|
|
|
|
set global slow_query_log= ON;
|
|
|
|
|
set global slow_query_log= OFF;
|
|
|
|
|
set global slow_query_log= OFF;
|
|
|
|
|
set global general_log= ON;
|
|
|
|
|
truncate table mysql.general_log;
|
|
|
|
|
create table t1(f1 int);
|
|
|
|
|
drop table t1;
|
|
|
|
|
select * from mysql.general_log;
|
|
|
|
|
event_time user_host thread_id server_id command_type argument
|
2006-06-22 16:20:29 +02:00
|
|
|
TIMESTAMP USER_HOST # 1 Query create table t1(f1 int)
|
|
|
|
|
TIMESTAMP USER_HOST # 1 Query drop table t1
|
|
|
|
|
TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log= OFF;
|
|
|
|
|
truncate table mysql.general_log;
|
|
|
|
|
select * from mysql.general_log;
|
|
|
|
|
event_time user_host thread_id server_id command_type argument
|
|
|
|
|
set global general_log= ON;
|
|
|
|
|
show global variables
|
|
|
|
|
where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
|
|
|
|
|
Variable_name = 'general_log' or Variable_name = 'slow_query_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log ON
|
|
|
|
|
log ON
|
|
|
|
|
log_slow_queries OFF
|
|
|
|
|
slow_query_log OFF
|
|
|
|
|
show variables like 'general_log_file';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log_file #
|
|
|
|
|
show variables like 'slow_query_log_file';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
slow_query_log_file #
|
|
|
|
|
show variables like 'log_output';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log_output FILE,TABLE
|
2009-01-13 14:09:24 +01:00
|
|
|
set global general_log_file='/not existing path/log.master';
|
|
|
|
|
ERROR 42000: Variable 'general_log_file' can't be set to the value of '/not existing path/log.master'
|
2007-02-20 21:00:05 +01:00
|
|
|
set global general_log_file='MYSQLTEST_VARDIR';
|
|
|
|
|
ERROR 42000: Variable 'general_log_file' can't be set to the value of 'MYSQLTEST_VARDIR'
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log_file='';
|
|
|
|
|
ERROR 42000: Variable 'general_log_file' can't be set to the value of ''
|
|
|
|
|
show variables like 'general_log_file';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log_file #
|
|
|
|
|
set global general_log= OFF;
|
2006-07-04 22:37:32 +02:00
|
|
|
set global general_log_file='MYSQLTEST_VARDIR/tmp/log.master';
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log= ON;
|
|
|
|
|
create table t1(f1 int);
|
|
|
|
|
drop table t1;
|
|
|
|
|
set global general_log= OFF;
|
|
|
|
|
set global general_log_file=default;
|
|
|
|
|
set global general_log= ON;
|
|
|
|
|
create table t1(f1 int);
|
|
|
|
|
drop table t1;
|
|
|
|
|
show variables like 'general_log_file';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log_file #
|
|
|
|
|
show variables like 'slow_query_log_file';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
slow_query_log_file #
|
|
|
|
|
set global general_log= default;
|
|
|
|
|
set global slow_query_log= default;
|
|
|
|
|
set global general_log_file= default;
|
|
|
|
|
set global slow_query_log_file= default;
|
|
|
|
|
show variables like 'general_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log OFF
|
|
|
|
|
show variables like 'slow_query_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
slow_query_log OFF
|
|
|
|
|
set global general_log=ON;
|
|
|
|
|
set global log_output=default;
|
|
|
|
|
show variables like 'log_output';
|
|
|
|
|
Variable_name Value
|
WL#3984 (Revise locking of mysql.general_log and mysql.slow_log)
Bug#25422 (Hang with log tables)
Bug 17876 (Truncating mysql.slow_log in a SP after using cursor locks the
thread)
Bug 23044 (Warnings on flush of a log table)
Bug 29129 (Resetting general_log while the GLOBAL READ LOCK is set causes
a deadlock)
Prior to this fix, the server would hang when performing concurrent
ALTER TABLE or TRUNCATE TABLE statements against the LOG TABLES,
which are mysql.general_log and mysql.slow_log.
The root cause traces to the following code:
in sql_base.cc, open_table()
if (table->in_use != thd)
{
/* wait_for_condition will unlock LOCK_open for us */
wait_for_condition(thd, &LOCK_open, &COND_refresh);
}
The problem with this code is that the current implementation of the
LOGGER creates 'fake' THD objects, like
- Log_to_csv_event_handler::general_log_thd
- Log_to_csv_event_handler::slow_log_thd
which are not associated to a real thread running in the server,
so that waiting for these non-existing threads to release table locks
cause the dead lock.
In general, the design of Log_to_csv_event_handler does not fit into the
general architecture of the server, so that the concept of general_log_thd
and slow_log_thd has to be abandoned:
- this implementation does not work with table locking
- it will not work with commands like SHOW PROCESSLIST
- having the log tables always opened does not integrate well with DDL
operations / FLUSH TABLES / SET GLOBAL READ_ONLY
With this patch, the fundamental design of the LOGGER has been changed to:
- always open and close a log table when writing a log
- remove totally the usage of fake THD objects
- clarify how locking of log tables is implemented in general.
See WL#3984 for details related to the new locking design.
Additional changes (misc bugs exposed and fixed):
1)
mysqldump which would ignore some tables in dump_all_tables_in_db(),
but forget to ignore the same in dump_all_views_in_db().
2)
mysqldump would also issue an empty "LOCK TABLE" command when all the tables
to lock are to be ignored (numrows == 0), instead of not issuing the query.
3)
Internal errors handlers could intercept errors but not warnings
(see sql_error.cc).
4)
Implementing a nested call to open tables, for the performance schema tables,
exposed an existing bug in remove_table_from_cache(), which would perform:
in_use->some_tables_deleted=1;
against another thread, without any consideration about thread locking.
This call inside remove_table_from_cache() was not required anyway,
since calling mysql_lock_abort() takes care of aborting -- cleanly -- threads
that might hold a lock on a table.
This line (in_use->some_tables_deleted=1) has been removed.
2007-07-27 08:31:06 +02:00
|
|
|
log_output FILE
|
2006-06-19 15:30:55 +02:00
|
|
|
set global general_log=OFF;
|
|
|
|
|
set global log_output=FILE;
|
|
|
|
|
truncate table mysql.general_log;
|
|
|
|
|
show variables like 'log_output';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log_output FILE
|
|
|
|
|
set global general_log=ON;
|
|
|
|
|
create table t1(f1 int);
|
|
|
|
|
select * from mysql.general_log;
|
|
|
|
|
event_time user_host thread_id server_id command_type argument
|
|
|
|
|
set global general_log=OFF;
|
|
|
|
|
set global log_output="FILE,TABLE";
|
|
|
|
|
show variables like 'log_output';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log_output FILE,TABLE
|
|
|
|
|
set global general_log=ON;
|
|
|
|
|
drop table t1;
|
|
|
|
|
select * from mysql.general_log;
|
|
|
|
|
event_time user_host thread_id server_id command_type argument
|
2006-06-22 16:20:29 +02:00
|
|
|
TIMESTAMP USER_HOST # 1 Query drop table t1
|
|
|
|
|
TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
|
2009-01-13 14:09:24 +01:00
|
|
|
SET @@global.general_log = @old_general_log;
|
|
|
|
|
SET @@global.general_log_file = @old_general_log_file;
|
|
|
|
|
SET @@global.slow_query_log = @old_slow_query_log;
|
|
|
|
|
SET @@global.slow_query_log_file = @old_slow_query_log_file;
|
WL#3984 (Revise locking of mysql.general_log and mysql.slow_log)
Bug#25422 (Hang with log tables)
Bug 17876 (Truncating mysql.slow_log in a SP after using cursor locks the
thread)
Bug 23044 (Warnings on flush of a log table)
Bug 29129 (Resetting general_log while the GLOBAL READ LOCK is set causes
a deadlock)
Prior to this fix, the server would hang when performing concurrent
ALTER TABLE or TRUNCATE TABLE statements against the LOG TABLES,
which are mysql.general_log and mysql.slow_log.
The root cause traces to the following code:
in sql_base.cc, open_table()
if (table->in_use != thd)
{
/* wait_for_condition will unlock LOCK_open for us */
wait_for_condition(thd, &LOCK_open, &COND_refresh);
}
The problem with this code is that the current implementation of the
LOGGER creates 'fake' THD objects, like
- Log_to_csv_event_handler::general_log_thd
- Log_to_csv_event_handler::slow_log_thd
which are not associated to a real thread running in the server,
so that waiting for these non-existing threads to release table locks
cause the dead lock.
In general, the design of Log_to_csv_event_handler does not fit into the
general architecture of the server, so that the concept of general_log_thd
and slow_log_thd has to be abandoned:
- this implementation does not work with table locking
- it will not work with commands like SHOW PROCESSLIST
- having the log tables always opened does not integrate well with DDL
operations / FLUSH TABLES / SET GLOBAL READ_ONLY
With this patch, the fundamental design of the LOGGER has been changed to:
- always open and close a log table when writing a log
- remove totally the usage of fake THD objects
- clarify how locking of log tables is implemented in general.
See WL#3984 for details related to the new locking design.
Additional changes (misc bugs exposed and fixed):
1)
mysqldump which would ignore some tables in dump_all_tables_in_db(),
but forget to ignore the same in dump_all_views_in_db().
2)
mysqldump would also issue an empty "LOCK TABLE" command when all the tables
to lock are to be ignored (numrows == 0), instead of not issuing the query.
3)
Internal errors handlers could intercept errors but not warnings
(see sql_error.cc).
4)
Implementing a nested call to open tables, for the performance schema tables,
exposed an existing bug in remove_table_from_cache(), which would perform:
in_use->some_tables_deleted=1;
against another thread, without any consideration about thread locking.
This call inside remove_table_from_cache() was not required anyway,
since calling mysql_lock_abort() takes care of aborting -- cleanly -- threads
that might hold a lock on a table.
This line (in_use->some_tables_deleted=1) has been removed.
2007-07-27 08:31:06 +02:00
|
|
|
SET GLOBAL general_log = ON;
|
|
|
|
|
SET GLOBAL slow_query_log = ON;
|
|
|
|
|
FLUSH TABLES WITH READ LOCK;
|
|
|
|
|
SET GLOBAL general_log = OFF;
|
|
|
|
|
SET GLOBAL slow_query_log = OFF;
|
|
|
|
|
UNLOCK TABLES;
|
|
|
|
|
FLUSH TABLES WITH READ LOCK;
|
|
|
|
|
SET GLOBAL general_log = ON;
|
|
|
|
|
SET GLOBAL slow_query_log = ON;
|
|
|
|
|
UNLOCK TABLES;
|
|
|
|
|
SET GLOBAL READ_ONLY = ON;
|
|
|
|
|
SET GLOBAL general_log = OFF;
|
|
|
|
|
SET GLOBAL slow_query_log = OFF;
|
|
|
|
|
SET GLOBAL READ_ONLY = OFF;
|
|
|
|
|
SET GLOBAL READ_ONLY = ON;
|
|
|
|
|
SET GLOBAL general_log = ON;
|
|
|
|
|
SET GLOBAL slow_query_log = ON;
|
|
|
|
|
SET GLOBAL READ_ONLY = OFF;
|
2009-01-13 14:09:24 +01:00
|
|
|
SET GLOBAL general_log = @old_general_log;
|
|
|
|
|
SET GLOBAL slow_query_log = @old_slow_query_log;
|
|
|
|
|
SET GLOBAL general_log = ON;
|
2007-10-25 12:03:24 +02:00
|
|
|
SHOW VARIABLES LIKE 'general_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log ON
|
|
|
|
|
SHOW VARIABLES LIKE 'log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log ON
|
|
|
|
|
SELECT @@general_log, @@log;
|
|
|
|
|
@@general_log @@log
|
|
|
|
|
1 1
|
|
|
|
|
SET GLOBAL log = 0;
|
2008-10-06 11:29:42 +02:00
|
|
|
Warnings:
|
|
|
|
|
Warning 1287 The syntax '@@log' is deprecated and will be removed in MySQL 7.0. Please use '@@general_log' instead
|
2007-10-25 12:03:24 +02:00
|
|
|
SHOW VARIABLES LIKE 'general_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log OFF
|
|
|
|
|
SHOW VARIABLES LIKE 'log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log OFF
|
|
|
|
|
SELECT @@general_log, @@log;
|
|
|
|
|
@@general_log @@log
|
|
|
|
|
0 0
|
|
|
|
|
SET GLOBAL general_log = 1;
|
|
|
|
|
SHOW VARIABLES LIKE 'general_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
general_log ON
|
|
|
|
|
SHOW VARIABLES LIKE 'log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log ON
|
|
|
|
|
SELECT @@general_log, @@log;
|
|
|
|
|
@@general_log @@log
|
|
|
|
|
1 1
|
|
|
|
|
SHOW VARIABLES LIKE 'slow_query_log';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
slow_query_log OFF
|
|
|
|
|
SHOW VARIABLES LIKE 'log_slow_queries';
|
|
|
|
|
Variable_name Value
|
|
|
|
|
log_slow_queries OFF
|
|
|
|
|
SELECT @@slow_query_log, @@log_slow_queries;
|
|
|
|
|
@@slow_query_log @@log_slow_queries
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0 0
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SET GLOBAL log_slow_queries = 0;
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2008-10-06 11:29:42 +02:00
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Warnings:
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Warning 1287 The syntax '@@log_slow_queries' is deprecated and will be removed in MySQL 7.0. Please use '@@slow_query_log' instead
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2007-10-25 12:03:24 +02:00
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SHOW VARIABLES LIKE 'slow_query_log';
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Variable_name Value
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slow_query_log OFF
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SHOW VARIABLES LIKE 'log_slow_queries';
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Variable_name Value
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log_slow_queries OFF
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SELECT @@slow_query_log, @@log_slow_queries;
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@@slow_query_log @@log_slow_queries
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0 0
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SET GLOBAL slow_query_log = 1;
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SHOW VARIABLES LIKE 'slow_query_log';
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Variable_name Value
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slow_query_log ON
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SHOW VARIABLES LIKE 'log_slow_queries';
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Variable_name Value
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log_slow_queries ON
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SELECT @@slow_query_log, @@log_slow_queries;
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@@slow_query_log @@log_slow_queries
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1 1
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2009-01-13 14:09:24 +01:00
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SET GLOBAL general_log = @old_general_log;
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SET GLOBAL slow_query_log = @old_slow_query_log;
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SET GLOBAL general_log_file= CONCAT('/not existing path/log.maste', 'r');
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ERROR 42000: Variable 'general_log_file' can't be set to the value of '/not existing path/log.master'
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SET GLOBAL general_log_file= NULL;
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2007-10-16 14:19:07 +02:00
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ERROR 42000: Variable 'general_log_file' can't be set to the value of 'NULL'
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2009-01-13 14:09:24 +01:00
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SET GLOBAL slow_query_log_file= CONCAT('/not existing path/log.maste', 'r');
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ERROR 42000: Variable 'slow_query_log_file' can't be set to the value of '/not existing path/log.master'
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SET GLOBAL slow_query_log_file= NULL;
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2007-10-16 14:19:07 +02:00
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ERROR 42000: Variable 'slow_query_log_file' can't be set to the value of 'NULL'
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2009-01-13 14:09:24 +01:00
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SET GLOBAL general_log_file= @old_general_log_file;
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SET GLOBAL slow_query_log_file= @old_slow_query_log_file;
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2008-03-28 19:46:18 +01:00
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# --
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# -- Bug#32748: Inconsistent handling of assignments to
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2009-01-13 14:09:24 +01:00
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# -- general_log_file/slow_query_log_file.
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2008-03-28 19:46:18 +01:00
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# --
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SET GLOBAL general_log_file = 'bug32748.query.log';
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SET GLOBAL slow_query_log_file = 'bug32748.slow.log';
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SHOW VARIABLES LIKE '%log_file';
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Variable_name Value
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general_log_file bug32748.query.log
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slow_query_log_file bug32748.slow.log
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2009-01-13 14:09:24 +01:00
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SET GLOBAL general_log_file = @old_general_log_file;
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SET GLOBAL slow_query_log_file = @old_slow_query_log_file;
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2008-03-28 19:46:18 +01:00
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# -- End of Bug#32748.
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2008-10-06 11:29:42 +02:00
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deprecated:
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SET GLOBAL log = 0;
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Warnings:
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Warning 1287 The syntax '@@log' is deprecated and will be removed in MySQL 7.0. Please use '@@general_log' instead
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SET GLOBAL log_slow_queries = 0;
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Warnings:
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Warning 1287 The syntax '@@log_slow_queries' is deprecated and will be removed in MySQL 7.0. Please use '@@slow_query_log' instead
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SET GLOBAL log = DEFAULT;
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Warnings:
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Warning 1287 The syntax '@@log' is deprecated and will be removed in MySQL 7.0. Please use '@@general_log' instead
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SET GLOBAL log_slow_queries = DEFAULT;
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Warnings:
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Warning 1287 The syntax '@@log_slow_queries' is deprecated and will be removed in MySQL 7.0. Please use '@@slow_query_log' instead
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not deprecated:
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SELECT @@global.general_log_file INTO @my_glf;
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SELECT @@global.slow_query_log_file INTO @my_sqlf;
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SET GLOBAL general_log = 0;
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SET GLOBAL slow_query_log = 0;
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SET GLOBAL general_log_file = 'WL4403_G.log';
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SET GLOBAL slow_query_log_file = 'WL4403_SQ.log';
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SET GLOBAL general_log_file = @my_glf;
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SET GLOBAL slow_query_log_file = @my_sqlf;
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SET GLOBAL general_log = DEFAULT;
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SET GLOBAL slow_query_log = DEFAULT;
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2009-01-13 14:09:24 +01:00
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SET @@global.general_log = @old_general_log;
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SET @@global.general_log_file = @old_general_log_file;
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SET @@global.slow_query_log = @old_slow_query_log;
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SET @@global.slow_query_log_file = @old_slow_query_log_file;
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2010-05-12 13:19:12 +02:00
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#
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# Bug #49756 Rows_examined is always 0 in the slow query log
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# for update statements
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#
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SET @old_log_output = @@global.log_output;
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SET GLOBAL log_output = "TABLE";
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SET GLOBAL slow_query_log = ON;
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SET GLOBAL long_query_time = 0.001;
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TRUNCATE TABLE mysql.slow_log;
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CREATE TABLE t1 (a INT);
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CREATE TABLE t2 (b INT, PRIMARY KEY (b));
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INSERT INTO t2 VALUES (3),(4);
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INSERT INTO t1 VALUES (1+sleep(.01)),(2);
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INSERT INTO t1 SELECT b+sleep(.01) from t2;
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UPDATE t1 SET a=a+sleep(.01) WHERE a>2;
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UPDATE t1 SET a=a+sleep(.01) ORDER BY a DESC;
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UPDATE t2 set b=b+sleep(.01) limit 1;
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UPDATE t1 SET a=a+sleep(.01) WHERE a in (SELECT b from t2);
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DELETE FROM t1 WHERE a=a+sleep(.01) ORDER BY a LIMIT 2;
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SELECT rows_examined,sql_text FROM mysql.slow_log;
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rows_examined sql_text
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0 INSERT INTO t1 VALUES (1+sleep(.01)),(2)
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2 INSERT INTO t1 SELECT b+sleep(.01) from t2
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4 UPDATE t1 SET a=a+sleep(.01) WHERE a>2
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8 UPDATE t1 SET a=a+sleep(.01) ORDER BY a DESC
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2010-06-22 22:32:29 +02:00
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1 UPDATE t2 set b=b+sleep(.01) limit 1
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2010-05-12 13:19:12 +02:00
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4 UPDATE t1 SET a=a+sleep(.01) WHERE a in (SELECT b from t2)
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6 DELETE FROM t1 WHERE a=a+sleep(.01) ORDER BY a LIMIT 2
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DROP TABLE t1,t2;
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TRUNCATE TABLE mysql.slow_log;
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# end of bug#49756
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2007-10-25 12:03:24 +02:00
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End of 5.1 tests
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2009-10-15 11:09:31 +02:00
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# --
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# -- Bug#38124: "general_log_file" variable silently unset when
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# -- using expression
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# --
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SET GLOBAL general_log_file = DEFAULT;
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SELECT @@general_log_file INTO @my_glf;
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SET GLOBAL general_log_file = 'BUG38124.LOG';
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SELECT @@general_log_file;
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@@general_log_file
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BUG38124.LOG
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SET GLOBAL general_log_file = concat('BUG38124-2.LOG');
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SELECT @@general_log_file;
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@@general_log_file
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BUG38124-2.LOG
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SET GLOBAL general_log_file = substr('BUG38124-2.LOG',3,6);
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SELECT @@general_log_file;
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@@general_log_file
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G38124
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SET GLOBAL general_log_file = DEFAULT;
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SELECT @@general_log_file = @my_glf;
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@@general_log_file = @my_glf
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1
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SET GLOBAL general_log_file = @old_general_log_file;
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2009-01-13 14:09:24 +01:00
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# Close connection con1
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2010-05-12 13:19:12 +02:00
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SET GLOBAL long_query_time = DEFAULT;
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SET GLOBAL log_output = @old_log_output;
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2009-01-13 14:09:24 +01:00
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SET global general_log = @old_general_log;
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SET global general_log_file = @old_general_log_file;
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SET global slow_query_log = @old_slow_query_log;
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SET global slow_query_log_file = @old_slow_query_log_file;
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