use mysql;
truncate table general_log;
select * from general_log;
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from general_log
truncate table slow_log;
select * from slow_log;
start_time	user_host	query_time	lock_time	rows_sent	rows_examined	db	last_insert_id	insert_id	server_id	sql_text
truncate table general_log;
select * from general_log where argument like '%general_log%';
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from general_log where argument like '%general_log%'
create table join_test (verbose_comment varchar (80), command_type varchar(64));
insert into join_test values ("User performed a usual SQL query", "Query");
insert into join_test values ("New DB connection was registered", "Connect");
insert into join_test values ("Get the table info", "Field List");
select verbose_comment, user_host, argument
from  mysql.general_log join join_test
on (mysql.general_log.command_type = join_test.command_type);
verbose_comment	user_host	argument
User performed a usual SQL query	USER_HOST	select * from general_log where argument like '%general_log%'
User performed a usual SQL query	USER_HOST	create table join_test (verbose_comment varchar (80), command_type varchar(64))
User performed a usual SQL query	USER_HOST	insert into join_test values ("User performed a usual SQL query", "Query")
User performed a usual SQL query	USER_HOST	insert into join_test values ("New DB connection was registered", "Connect")
User performed a usual SQL query	USER_HOST	insert into join_test values ("Get the table info", "Field List")
User performed a usual SQL query	USER_HOST	select verbose_comment, user_host, argument
from  mysql.general_log join join_test
on (mysql.general_log.command_type = join_test.command_type)
drop table join_test;
flush logs;
lock tables mysql.general_log WRITE;
ERROR HY000: You can't write-lock a log table. Only read access is possible
lock tables mysql.slow_log WRITE;
ERROR HY000: You can't write-lock a log table. Only read access is possible
lock tables mysql.general_log READ;
ERROR HY000: You can't use usual read lock with log tables. Try READ LOCAL instead
lock tables mysql.slow_log READ;
ERROR HY000: You can't use usual read lock with log tables. Try READ LOCAL instead
lock tables mysql.slow_log READ LOCAL, mysql.general_log READ LOCAL;
unlock tables;
lock tables mysql.general_log READ LOCAL;
flush logs;
unlock tables;
select "Mark that we woke up from flush logs in the test"
       as "test passed";
test passed
Mark that we woke up from flush logs in the test
lock tables mysql.general_log READ LOCAL;
truncate mysql.general_log;
unlock tables;
select "Mark that we woke up from TRUNCATE in the test"
       as "test passed";
test passed
Mark that we woke up from TRUNCATE in the test
use test;
truncate table mysql.general_log;
set names utf8;
create table bug16905 (s char(15) character set utf8 default 'пусто');
insert into bug16905 values ('новое');
select * from mysql.general_log;
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	set names utf8
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	create table bug16905 (s char(15) character set utf8 default 'пусто')
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	insert into bug16905 values ('новое')
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from mysql.general_log
drop table bug16905;
truncate table mysql.slow_log;
set session long_query_time=1;
select sleep(2);
sleep(2)
0
select * from mysql.slow_log;
start_time	user_host	query_time	lock_time	rows_sent	rows_examined	db	last_insert_id	insert_id	server_id	sql_text
TIMESTAMP	USER_HOST	QUERY_TIME	00:00:00	1	0	test	0	0	1	select sleep(2)
alter table mysql.general_log engine=myisam;
ERROR HY000: You cannot 'ALTER' a log table if logging is enabled
alter table mysql.slow_log engine=myisam;
ERROR HY000: You cannot 'ALTER' a log table if logging is enabled
drop table mysql.general_log;
ERROR HY000: You cannot 'DROP' a log table if logging is enabled
drop table mysql.slow_log;
ERROR HY000: You cannot 'DROP' a log table if logging is enabled
set global general_log='OFF';
alter table mysql.slow_log engine=myisam;
ERROR HY000: You cannot 'ALTER' a log table if logging is enabled
set global slow_query_log='OFF';
show create table mysql.general_log;
Table	Create Table
general_log	CREATE TABLE `general_log` (
  `event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `user_host` mediumtext,
  `thread_id` int(11) DEFAULT NULL,
  `server_id` int(11) DEFAULT NULL,
  `command_type` varchar(64) DEFAULT NULL,
  `argument` mediumtext
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='General log'
show create table mysql.slow_log;
Table	Create Table
slow_log	CREATE TABLE `slow_log` (
  `start_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `user_host` mediumtext NOT NULL,
  `query_time` time NOT NULL,
  `lock_time` time NOT NULL,
  `rows_sent` int(11) NOT NULL,
  `rows_examined` int(11) NOT NULL,
  `db` varchar(512) DEFAULT NULL,
  `last_insert_id` int(11) DEFAULT NULL,
  `insert_id` int(11) DEFAULT NULL,
  `server_id` int(11) DEFAULT NULL,
  `sql_text` mediumtext NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
alter table mysql.general_log engine=myisam;
alter table mysql.slow_log engine=myisam;
show create table mysql.general_log;
Table	Create Table
general_log	CREATE TABLE `general_log` (
  `event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `user_host` mediumtext,
  `thread_id` int(11) DEFAULT NULL,
  `server_id` int(11) DEFAULT NULL,
  `command_type` varchar(64) DEFAULT NULL,
  `argument` mediumtext
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='General log'
show create table mysql.slow_log;
Table	Create Table
slow_log	CREATE TABLE `slow_log` (
  `start_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `user_host` mediumtext NOT NULL,
  `query_time` time NOT NULL,
  `lock_time` time NOT NULL,
  `rows_sent` int(11) NOT NULL,
  `rows_examined` int(11) NOT NULL,
  `db` varchar(512) DEFAULT NULL,
  `last_insert_id` int(11) DEFAULT NULL,
  `insert_id` int(11) DEFAULT NULL,
  `server_id` int(11) DEFAULT NULL,
  `sql_text` mediumtext NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Slow log'
set global general_log='ON';
set global slow_query_log='ON';
select * from mysql.general_log;
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	set names utf8
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	create table bug16905 (s char(15) character set utf8 default 'пусто')
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	insert into bug16905 values ('новое')
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from mysql.general_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	drop table bug16905
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	truncate table mysql.slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	set session long_query_time=1
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select sleep(2)
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from mysql.slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	alter table mysql.general_log engine=myisam
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	alter table mysql.slow_log engine=myisam
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	drop table mysql.general_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	drop table mysql.slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	set global general_log='OFF'
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	set global slow_query_log='ON'
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from mysql.general_log
flush logs;
lock tables mysql.general_log WRITE;
ERROR HY000: You can't write-lock a log table. Only read access is possible
lock tables mysql.slow_log WRITE;
ERROR HY000: You can't write-lock a log table. Only read access is possible
lock tables mysql.general_log READ;
ERROR HY000: You can't use usual read lock with log tables. Try READ LOCAL instead
lock tables mysql.slow_log READ;
ERROR HY000: You can't use usual read lock with log tables. Try READ LOCAL instead
lock tables mysql.slow_log READ LOCAL, mysql.general_log READ LOCAL;
unlock tables;
set global general_log='OFF';
set global slow_query_log='OFF';
set @save_storage_engine= @@session.storage_engine;
set storage_engine= MEMORY;
alter table mysql.slow_log engine=ndb;
ERROR HY000: This storage engine cannot be used for log tables"
alter table mysql.slow_log engine=innodb;
ERROR HY000: This storage engine cannot be used for log tables"
alter table mysql.slow_log engine=archive;
ERROR HY000: This storage engine cannot be used for log tables"
alter table mysql.slow_log engine=blackhole;
ERROR HY000: This storage engine cannot be used for log tables"
set storage_engine= @save_storage_engine;
drop table mysql.slow_log;
drop table mysql.general_log;
drop table mysql.general_log;
ERROR 42S02: Unknown table 'general_log'
drop table mysql.slow_log;
ERROR 42S02: Unknown table 'slow_log'
use mysql;
CREATE TABLE `general_log` (
`event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext,
`thread_id` int(11) DEFAULT NULL,
`server_id` int(11) DEFAULT NULL,
`command_type` varchar(64) DEFAULT NULL,
`argument` mediumtext
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='General log';
CREATE TABLE `slow_log` (
`start_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext NOT NULL,
`query_time` time NOT NULL,
`lock_time` time NOT NULL,
`rows_sent` int(11) NOT NULL,
`rows_examined` int(11) NOT NULL,
`db` varchar(512) DEFAULT NULL,
`last_insert_id` int(11) DEFAULT NULL,
`insert_id` int(11) DEFAULT NULL,
`server_id` int(11) DEFAULT NULL,
`sql_text` mediumtext NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log';
set global general_log='ON';
set global slow_query_log='ON';
use test;
flush tables with read lock;
unlock tables;
use mysql;
lock tables general_log read local, help_category read local;
unlock tables;
use mysql;
RENAME TABLE general_log TO renamed_general_log;
ERROR HY000: Cannot rename 'general_log'. When logging enabled, rename to/from log table must rename two tables: the log table to an archive table and another table back to 'general_log'
RENAME TABLE slow_log TO renamed_slow_log;
ERROR HY000: Cannot rename 'slow_log'. When logging enabled, rename to/from log table must rename two tables: the log table to an archive table and another table back to 'slow_log'
truncate table general_log;
select * from general_log;
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from general_log
truncate table slow_log;
select * from slow_log;
start_time	user_host	query_time	lock_time	rows_sent	rows_examined	db	last_insert_id	insert_id	server_id	sql_text
create table general_log_new like general_log;
rename table general_log TO renamed_general_log, general_log_new TO general_log;
create table slow_log_new like slow_log;
rename table slow_log TO renamed_slow_log, slow_log_new TO slow_log;
rename table general_log TO general_log_new, renamed_general_log TO general_log, slow_log to renamed_slow_log;
ERROR HY000: Cannot rename 'slow_log'. When logging enabled, rename to/from log table must rename two tables: the log table to an archive table and another table back to 'slow_log'
select * from general_log;
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	create table slow_log_new like slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	rename table slow_log TO renamed_slow_log, slow_log_new TO slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	rename table general_log TO general_log_new, renamed_general_log TO general_log, slow_log to renamed_slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from general_log
select * from renamed_general_log;
event_time	user_host	thread_id	server_id	command_type	argument
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from general_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	truncate table slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	select * from slow_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	create table general_log_new like general_log
TIMESTAMP	USER_HOST	THREAD_ID	1	Query	rename table general_log TO renamed_general_log, general_log_new TO general_log
select * from slow_log;
start_time	user_host	query_time	lock_time	rows_sent	rows_examined	db	last_insert_id	insert_id	server_id	sql_text
select * from renamed_slow_log;
start_time	user_host	query_time	lock_time	rows_sent	rows_examined	db	last_insert_id	insert_id	server_id	sql_text
set global general_log='OFF';
RENAME TABLE general_log TO general_log2;
set global slow_query_log='OFF';
RENAME TABLE slow_log TO slow_log2;
set global general_log='ON';
ERROR HY000: Cannot activate 'general' log
set global slow_query_log='ON';
ERROR HY000: Cannot activate 'slow query' log
RENAME TABLE general_log2 TO general_log;
RENAME TABLE slow_log2 TO slow_log;
set global general_log='ON';
set global slow_query_log='ON';
flush logs;
flush logs;
drop table renamed_general_log, renamed_slow_log;
use test;
use mysql;
repair table general_log;
Table	Op	Msg_type	Msg_text
mysql.general_log	repair	status	OK
repair table slow_log;
Table	Op	Msg_type	Msg_text
mysql.slow_log	repair	status	OK
create table general_log_new like general_log;
create table slow_log_new like slow_log;
show tables like "%log%";
Tables_in_mysql (%log%)
general_log
general_log_new
ndb_binlog_index
slow_log
slow_log_new
drop table slow_log_new, general_log_new;
use test;