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set @save_userstat=@@global.userstat;
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set global userstat=1;
create table just_a_test(id int,first_name varchar(10),last_name varchar(10),address varchar(100),phone bigint,email varchar(30), state varchar(30));
insert into just_a_test values(1,'fa','la','china_a',11111111,'fa_la@163.com','California'),
(2,'fb','lb','china_b',22222222,'fb_lb@163.com','Arizona'),
(3,'fc','lc','china_c',33333333,'fc_lc@163.com','California'),
(4,'fd','ld','china_d',44444444,'fd_ld@163.com','Utah'),
(5,'fe','le','china_e',55555555,'fe_le@163.com','Arizona');
alter table just_a_test add primary key (id);
alter table just_a_test add key IND_just_a_test_first_name_last_name(first_name,last_name);
alter table just_a_test add key IND_just_a_test_state(state);
select count(*) from just_a_test where first_name='fc' and last_name='lc';
count(*)
1
select count(*) from just_a_test where state = 'California';
count(*)
2
select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
test just_a_test IND_just_a_test_first_name_last_name 1 1
test just_a_test IND_just_a_test_state 2 1
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
test just_a_test 18 5 5 5 0 0 2 0
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alter table just_a_test drop key IND_just_a_test_first_name_last_name;
select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
test just_a_test IND_just_a_test_state 2 1
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
test just_a_test 23 5 5 5 0 0 2 0
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alter table just_a_test drop column state;
select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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select * from just_a_test force index(primary) where id between 1 and 2;
id first_name last_name address phone email
1 fa la china_a 11111111 fa_la@163.com
2 fb lb china_b 22222222 fb_lb@163.com
select * from just_a_test force index(primary) where id=8;
id first_name last_name address phone email
update just_a_test set first_name="unlucky" where id=5;
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
test just_a_test 31 6 6 5 1 0 4 1
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delete from just_a_test where id=5;
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
test just_a_test 32 7 7 5 1 1 5 1
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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test just_a_test PRIMARY 4 3
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drop table just_a_test;
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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create table just_a_test(id int not null primary key,first_name varchar(10),last_name varchar(10),address varchar(100),phone bigint,email varchar(30), state varchar(30),key(first_name,last_name),key(state));
insert into just_a_test values(1,'fa','la','china_a',11111111,'fa_la@163.com','California'),
(2,'fb','lb','china_b',22222222,'fb_lb@163.com','Arizona'),
(3,'fc','lc','china_c',33333333,'fc_lc@163.com','California'),
(4,'fd','ld','china_d',44444444,'fd_ld@163.com','Utah'),
(5,'fe','le','china_e',55555555,'fe_le@163.com','Arizona');
select count(*) from just_a_test where first_name='fc' and last_name='lc';
count(*)
1
select count(*) from just_a_test where state = 'California';
count(*)
2
select count(*) from just_a_test where id between 2 and 4;
count(*)
3
select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
test just_a_test PRIMARY 4 1
test just_a_test first_name 1 1
test just_a_test state 2 1
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
test just_a_test 7 5 15 5 0 0 3 0
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drop table just_a_test;
select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES
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set global userstat=@save_userstat;
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#
# MDEV-23729 INFORMATION_SCHEMA Table info. about user locked due to
# max_password_errors
#
# MDEV-32218 message to notify end-user N-days prior the password get
# expired
#
set @old_max_password_errors=@@max_password_errors;
set global max_password_errors=2;
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'mariadb.sys'@'localhost' 0 NULL
'root'@'neo' 0 NULL
set timestamp= 123;
create user nice_user;
create user naughty_user identified by 'naughty_user_passwd';
alter user naughty_user password expire interval 10 day;
select 3600*24;
3600*24
86400
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'mariadb.sys'@'localhost' 0 NULL
'naughty_user'@'%' 0 864123
'nice_user'@'%' 0 NULL
'root'@HOSTNAME 0 NULL
alter user nice_user password expire interval 10 day;
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'mariadb.sys'@'localhost' 0 NULL
'naughty_user'@'%' 0 864123
'nice_user'@'%' 0 864123
'root'@HOSTNAME 0 NULL
connect(localhost,naughty_user,wrong_passwd,test,MASTER_PORT,MASTER_SOCKET);
connect con1, localhost, naughty_user, wrong_passwd;
ERROR 28000: Access denied for user 'naughty_user'@'localhost' (using password: YES)
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'mariadb.sys'@'localhost' 0 NULL
'naughty_user'@'%' 1 864123
'nice_user'@'%' 0 864123
'root'@HOSTNAME 0 NULL
connect(localhost,naughty_user,wrong_passwd,test,MASTER_PORT,MASTER_SOCKET);
connect con1, localhost, naughty_user, wrong_passwd;
ERROR 28000: Access denied for user 'naughty_user'@'localhost' (using password: YES)
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'mariadb.sys'@'localhost' 0 NULL
'naughty_user'@'%' 2 864123
'nice_user'@'%' 0 864123
'root'@HOSTNAME 0 NULL
# Show all users that are blocked due to max_password_errors reached.
select user from information_schema.users
where password_errors >= @@global.max_password_errors;
user
'naughty_user'@'%'
set global max_password_errors=3;
connect con1, localhost, naughty_user, naughty_user_passwd;
connection default;
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'mariadb.sys'@'localhost' 0 NULL
'naughty_user'@'%' 0 864123
'nice_user'@'%' 0 864123
'root'@HOSTNAME 0 NULL
disconnect con1;
# Test unprivileged output
connect con2, localhost, nice_user;
set timestamp= 123;
set password= password('nice_passwd');
select * from information_schema.users;
USER PASSWORD_ERRORS PASSWORD_EXPIRATION_TIME
'nice_user'@'%' 0 864123
# Delete user while some connection is still alive, then select.
connection default;
drop user nice_user;
connection con2;
select * from information_schema.users;
ERROR 0L000: The current user is invalid
disconnect con2;
connection default;
drop user naughty_user;
set global max_password_errors=@old_max_password_errors;
