path: root/mysql-test/t/information_schema.test

# This test  uses grants, which can't get tested for embedded server
-- source include/not_embedded.inc

#Don't run this test when thread_pool active
--source include/not_threadpool.inc

# check that CSV engine was compiled in, as the result of the test depends
# on the presence of the log tables (which are CSV-based).
--source include/have_csv.inc

# Check that XtraDB is enabled as result depends on it
-- source include/have_xtradb.inc

# Save the initial number of concurrent sessions
--source include/count_sessions.inc

set global sql_mode="";
set local sql_mode="";

# Test for information_schema.schemata &
# show databases

--disable_warnings
DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5;
DROP VIEW IF EXISTS v1;
--enable_warnings


show variables where variable_name like "skip_show_database";
grant select, update, execute on test.* to mysqltest_2@localhost;
grant select, update on test.* to mysqltest_1@localhost;
create user mysqltest_3@localhost;
create user mysqltest_3;


select * from information_schema.SCHEMATA where schema_name > 'm';
select schema_name from information_schema.schemata;
show databases like 't%';
show databases;
show databases where `database` = 't%';

# Test for information_schema.tables &
# show tables

create database mysqltest;
create table mysqltest.t1(a int, b VARCHAR(30), KEY string_data (b));
create table test.t2(a int);
create table t3(a int, KEY a_data (a));
create table mysqltest.t4(a int);
create table t5 (id int auto_increment primary key);
insert into t5 values (10);
create view v1 (c) as
 SELECT table_name FROM information_schema.TABLES
  WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') AND
        table_name not like 'innodb_%' AND
        table_name not like 'xtradb_%';
--sorted_result
select * from v1;

--sorted_result
select c,table_name from v1 
inner join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";

--sorted_result
select c,table_name from v1 
left join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";

--sorted_result
select c, v2.table_name from v1
right join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";

select table_name from information_schema.TABLES
where table_schema = "mysqltest" and table_name like "t%";

select * from information_schema.STATISTICS where TABLE_SCHEMA = "mysqltest";
show keys from t3 where Key_name = "a_data";

show tables like 't%';
--replace_column 8 # 12 # 13 #
show table status;
show full columns from t3 like "a%";
show full columns from mysql.db like "Insert%";
show full columns from v1;
select * from information_schema.COLUMNS where table_name="t1"
and column_name= "a";
show columns from mysqltest.t1 where field like "%a%";

create view mysqltest.v1 (c) as select a from mysqltest.t1;
grant select (a) on mysqltest.t1 to mysqltest_2@localhost;
grant select on mysqltest.v1 to mysqltest_3;
connect (user3,localhost,mysqltest_2,,);
connection user3;
select table_name, column_name, privileges from information_schema.columns
where table_schema = 'mysqltest' and table_name = 't1';
show columns from mysqltest.t1;
connect (user4,localhost,mysqltest_3,,mysqltest);
connection user4;
select table_name, column_name, privileges from information_schema.columns
where table_schema = 'mysqltest' and table_name = 'v1';
--error ER_VIEW_NO_EXPLAIN
explain select * from v1;
connection default;
disconnect user4;

drop view v1, mysqltest.v1;
drop tables mysqltest.t4, mysqltest.t1, t2, t3, t5;
drop database mysqltest;

# Test for information_schema.CHARACTER_SETS &
# SHOW CHARACTER SET

select * from information_schema.CHARACTER_SETS
where CHARACTER_SET_NAME like 'latin1%';
SHOW CHARACTER SET LIKE 'latin1%';
SHOW CHARACTER SET WHERE charset like 'latin1%';

# Test for information_schema.COLLATIONS &
# SHOW COLLATION

--replace_column 5 #
select * from information_schema.COLLATIONS
where COLLATION_NAME like 'latin1%';
--replace_column 5 #
SHOW COLLATION LIKE 'latin1%';
--replace_column 5 #
SHOW COLLATION WHERE collation like 'latin1%';

select * from information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
where COLLATION_NAME like 'latin1%';

# Test for information_schema.ROUTINES &
#

--disable_warnings
drop procedure if exists sel2;
drop function if exists sub1;
drop function if exists sub2;
--enable_warnings

create function sub1(i int) returns int
  return i+1;
delimiter |;
create procedure sel2()
begin
  select * from t1;
  select * from t2;
end|
delimiter ;|

#
# Bug#7222 information_schema: errors in "routines"
#
select parameter_style, sql_data_access, dtd_identifier
from information_schema.routines where routine_schema='test';

--replace_column 5 # 6 #
show procedure status where db='test';
--replace_column 5 # 6 #
show function status where db='test';
select a.ROUTINE_NAME from information_schema.ROUTINES a,
information_schema.SCHEMATA b where
a.ROUTINE_SCHEMA = b.SCHEMA_NAME AND b.SCHEMA_NAME='test';
--replace_column 3 #
explain select a.ROUTINE_NAME from information_schema.ROUTINES a,
information_schema.SCHEMATA b where
a.ROUTINE_SCHEMA = b.SCHEMA_NAME;

select a.ROUTINE_NAME, b.name from information_schema.ROUTINES a,
mysql.proc b where a.ROUTINE_NAME = convert(b.name using utf8) AND a.ROUTINE_SCHEMA='test' order by 1;
select count(*) from information_schema.ROUTINES where routine_schema='test';

create view v1 as select routine_schema, routine_name from information_schema.routines where routine_schema='test'
order by routine_schema, routine_name;
select * from v1;
drop view v1;

connect (user1,localhost,mysqltest_1,,);
connection user1;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
--error ER_SP_DOES_NOT_EXIST
show create function sub1;
connection user3;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
connection default;
grant all privileges on test.* to mysqltest_1@localhost;
connect (user2,localhost,mysqltest_1,,);
connection user2;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
create function sub2(i int) returns int
  return i+1;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
show create procedure sel2;
show create function sub1;
show create function sub2;
--replace_column 5 # 6 #
show function status like "sub2";
connection default;
disconnect user1;
disconnect user3;
drop function sub2;
show create procedure sel2;

#
# Test for views
#
create view v0 (c) as select schema_name from information_schema.schemata;
select * from v0;
--replace_column 3 #
explain select * from v0;
create view v1 (c) as select table_name from information_schema.tables
where table_name="v1";
select * from v1;
create view v2 (c) as select column_name from information_schema.columns
where table_name="v2";
select * from v2;
create view v3 (c) as select CHARACTER_SET_NAME from information_schema.character_sets
where CHARACTER_SET_NAME like "latin1%";
select * from v3;
create view v4 (c) as select COLLATION_NAME from information_schema.collations
where COLLATION_NAME like "latin1%";
select * from v4;
show keys from v4;
select * from information_schema.views where TABLE_NAME like "v%";
drop view v0, v1, v2, v3, v4;

#
# Test for privileges tables
#
create table t1 (a int);
grant select,update,insert on t1 to mysqltest_1@localhost;
grant select (a), update (a),insert(a), references(a) on t1 to mysqltest_1@localhost;
grant all on test.* to mysqltest_1@localhost with grant option;
select * from information_schema.USER_PRIVILEGES where grantee like '%mysqltest_1%';
select * from information_schema.SCHEMA_PRIVILEGES where grantee like '%mysqltest_1%';
select * from information_schema.TABLE_PRIVILEGES where grantee like '%mysqltest_1%';
select * from information_schema.COLUMN_PRIVILEGES where grantee like '%mysqltest_1%';
delete from mysql.user where user like 'mysqltest%';
delete from mysql.db where user like 'mysqltest%';
delete from mysql.tables_priv where user like 'mysqltest%';
delete from mysql.columns_priv where user like 'mysqltest%';
flush privileges;
drop table t1;


#
# Test for KEY_COLUMN_USAGE & TABLE_CONSTRAINTS tables
#

create table t1 (a int null, primary key(a));
alter table t1 add constraint constraint_1 unique (a);
alter table t1 add constraint unique key_1(a);
alter table t1 add constraint constraint_2 unique key_2(a);
show create table t1;
select * from information_schema.TABLE_CONSTRAINTS where
TABLE_SCHEMA= "test";
select * from information_schema.KEY_COLUMN_USAGE where
TABLE_SCHEMA= "test";

connection user2;
select table_name from information_schema.TABLES where table_schema like "test%";
select table_name,column_name from information_schema.COLUMNS where table_schema like "test%";
select ROUTINE_NAME from information_schema.ROUTINES;
disconnect user2;
connection default;
delete from mysql.user where user='mysqltest_1';
drop table t1;
drop procedure sel2;
drop function sub1;

create table t1(a int);
create view v1 (c) as select a from t1 with check option;
create view v2 (c) as select a from t1 WITH LOCAL CHECK OPTION;
create view v3 (c) as select a from t1 WITH CASCADED CHECK OPTION;
select * from information_schema.views;
grant select (a) on test.t1 to joe@localhost with grant option;
select * from INFORMATION_SCHEMA.COLUMN_PRIVILEGES;
select * from INFORMATION_SCHEMA.TABLE_PRIVILEGES;
drop view v1, v2, v3;
drop table t1;
delete from mysql.user where user='joe';
delete from mysql.db where user='joe';
delete from mysql.tables_priv where user='joe';
delete from mysql.columns_priv where user='joe';
flush privileges;

# QQ This results in NULLs instead of the version numbers when
# QQ a LOCK TABLES is in effect when selecting from
# QQ information_schema.tables.

--disable_parsing # until bug is fixed
delimiter //;
create procedure px5 ()
begin
declare v int;
declare c cursor for select version from
information_schema.tables where table_schema <> 'information_schema';
open c;
fetch c into v;
select v;
close c;
end;//

call px5()//
call px5()//
delimiter ;//
select sql_mode from information_schema.ROUTINES;
drop procedure px5;
--enable_parsing

create table t1 (a int not null auto_increment,b int, primary key (a));
insert into t1 values (1,1),(NULL,3),(NULL,4);
select AUTO_INCREMENT from information_schema.tables where table_name = 't1';
drop table t1;

create table t1 (s1 int);
insert into t1 values (0),(9),(0);
select s1 from t1 where s1 in (select version from
information_schema.tables) union select version from
information_schema.tables;
drop table t1;

SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
set names latin2;
SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
set names latin1;

create table t1 select * from information_schema.CHARACTER_SETS
where CHARACTER_SET_NAME like "latin1";
select * from t1;
alter table t1 default character set utf8;
show create table t1;
drop table t1;

create view v1 as select * from information_schema.TABLES;
drop view v1;
create table t1(a NUMERIC(5,3), b NUMERIC(5,1), c float(5,2),
 d NUMERIC(6,4), e float, f DECIMAL(6,3), g int(11), h DOUBLE(10,3),
 i DOUBLE);
select COLUMN_NAME,COLUMN_TYPE, CHARACTER_MAXIMUM_LENGTH,
 CHARACTER_OCTET_LENGTH, NUMERIC_PRECISION, NUMERIC_SCALE
from information_schema.columns where table_name= 't1';
drop table t1;

create table t115 as select table_name, column_name, column_type
from information_schema.columns where table_name = 'proc';
select * from t115;
drop table t115;

delimiter //;
create procedure p108 () begin declare c cursor for select data_type
from information_schema.columns;  open c; open c; end;//
--error ER_SP_CURSOR_ALREADY_OPEN
call p108()//
delimiter ;//
drop procedure p108;

create view v1 as select A1.table_name from information_schema.TABLES A1
where table_name= "user";
select * from v1;
drop view v1;

create view vo as select 'a' union select 'a';
show index from vo;
select * from information_schema.TABLE_CONSTRAINTS where
TABLE_NAME= "vo";
select * from information_schema.KEY_COLUMN_USAGE where
TABLE_NAME= "vo";
drop view vo;

select TABLE_NAME,TABLE_TYPE,ENGINE
from information_schema.tables
where table_schema='information_schema' limit 2;
--sorted_result
show tables from information_schema like "T%";

--error ER_DBACCESS_DENIED_ERROR
create database information_schema;
use information_schema;
--sorted_result
show full tables like "T%";
--error ER_DBACCESS_DENIED_ERROR
create table t1(a int);
use test;
show tables;
use information_schema;
--sorted_result
show tables like "T%";

#
# Bug#7210 information_schema: can't access when table-name = reserved word
#
select table_name from tables where table_name='user';
select column_name, privileges from columns
where table_name='user' and column_name like '%o%';

#
# Bug#7212 information_schema: "Can't find file" errors if storage engine gone
# Bug#7211 information_schema: crash if bad view
#
use test;
create function sub1(i int) returns int
  return i+1;
create table t1(f1 int);
create view v2 (c) as select f1 from t1;
create view v3 (c) as select sub1(1);
create table t4(f1 int, KEY f1_key (f1));
drop table t1;
drop function sub1;
select table_name from information_schema.views
where table_schema='test';
select table_name from information_schema.views
where table_schema='test';
select column_name from information_schema.columns
where table_schema='test';
select index_name from information_schema.statistics where table_schema='test';
select constraint_name from information_schema.table_constraints
where table_schema='test';
show create view v2;
show create table v3;
drop view v2;
drop view v3;
drop table t4;

#
# Bug#7213 information_schema: redundant non-standard TABLE_NAMES table
#
--error ER_UNKNOWN_TABLE
select * from information_schema.table_names;

#
# Bug#2719 information_schema: errors in "columns"
#
select column_type from information_schema.columns
where table_schema="information_schema" and table_name="COLUMNS" and
(column_name="character_set_name" or column_name="collation_name");

#
# Bug#2718 information_schema: errors in "tables"
#
select TABLE_ROWS from information_schema.tables where
table_schema="information_schema" and table_name="COLUMNS";
select table_type from information_schema.tables
where table_schema="mysql" and table_name="user";

# test for 'show open tables ... where'
show open tables where `table` like "user";
# test for 'show status ... where'
show status where variable_name like "%database%";
# test for 'show variables ... where'
show variables where variable_name like "skip_show_databas";

#
# Bug#7981 SHOW GLOBAL STATUS crashes server
#
# We don't actually care about the value, just that it doesn't crash.
--replace_column 2 #
show global status like "Threads_running";

#
# Bug#7915 crash,JOIN VIEW, subquery,
# SELECT .. FROM INFORMATION_SCHEMA.COLUMNS
#
create table t1(f1 int);
create table t2(f2 int);
create view v1 as select * from t1, t2;
set @got_val= (select count(*) from information_schema.columns);
drop view v1;
drop table t1, t2;

#
# Bug#7476 crash on SELECT * FROM INFORMATION_SCHEMA.TABLES
#
use test;
CREATE TABLE t_crashme ( f1 BIGINT);
CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
let $tab_count= 65;
--disable_query_log
while ($tab_count)
{
     EVAL CREATE TABLE t_$tab_count (f1 BIGINT);
     dec $tab_count ;
}
--disable_result_log
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES;
--enable_result_log
SELECT count(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
let $tab_count= 65;
while ($tab_count)
{
     EVAL DROP TABLE t_$tab_count;
     dec $tab_count ;
}
--enable_query_log
drop view a2, a1;
drop table t_crashme;

#
# Bug#7215 information_schema: columns are longtext instead of varchar
# Bug#7217 information_schema: columns are varbinary() instead of timestamp
#
select table_schema,table_name, column_name from
information_schema.columns
where data_type = 'longtext' and table_schema != 'performance_schema';
select table_name, column_name, data_type from information_schema.columns
where data_type = 'datetime' and table_name not like 'innodb_%';

#
# Bug#8164 subquery with INFORMATION_SCHEMA.COLUMNS, 100 % CPU
#
SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES A
WHERE NOT EXISTS
(SELECT * FROM INFORMATION_SCHEMA.COLUMNS B
  WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
  AND A.TABLE_NAME = B.TABLE_NAME);

#
# Bug#9344 INFORMATION_SCHEMA, wrong content, numeric columns
#

create table t1
( x_bigint BIGINT,
  x_integer INTEGER,
  x_smallint SMALLINT,
  x_decimal DECIMAL(5,3),
  x_numeric NUMERIC(5,3),
  x_real REAL,
  x_float FLOAT,
  x_double_precision DOUBLE PRECISION );
SELECT COLUMN_NAME, CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME= 't1';
drop table t1;

#
# Bug#10261 INFORMATION_SCHEMA.COLUMNS, incomplete result for non root user
#

grant select on test.* to mysqltest_4@localhost;
connect (user10261,localhost,mysqltest_4,,);
connection user10261;
--sorted_result
SELECT TABLE_NAME, COLUMN_NAME, PRIVILEGES FROM INFORMATION_SCHEMA.COLUMNS 
where COLUMN_NAME='TABLE_NAME' and table_name not like 'innodb%';
connection default;
disconnect user10261;
delete from mysql.user where user='mysqltest_4';
delete from mysql.db where user='mysqltest_4';
flush privileges;

#
# TRIGGERS table test
#
create table t1 (i int, j int);

delimiter |;
create trigger trg1 before insert on t1 for each row
begin
  if new.j > 10 then
    set new.j := 10;
  end if;
end|
create trigger trg2 before update on t1 for each row
begin
  if old.i % 2 = 0 then
    set new.j := -1;
  end if;
end|
create trigger trg3 after update on t1 for each row
begin
  if new.j = -1 then
    set @fired:= "Yes";
  end if;
end|
delimiter ;|
show triggers;
select * from information_schema.triggers where trigger_schema in ('mysql', 'information_schema', 'test', 'mysqltest');

drop trigger trg1;
drop trigger trg2;
drop trigger trg3;
drop table t1;


#
# Bug#10964 Information Schema:Authorization check on privilege tables is improper
#

create database mysqltest;
create table mysqltest.t1 (f1 int, f2 int);
create table mysqltest.t2 (f1 int);
grant select (f1) on mysqltest.t1 to user1@localhost;
grant select on mysqltest.t2 to user2@localhost;
grant select on mysqltest.* to user3@localhost;
grant select on *.* to user4@localhost;

connect (con1,localhost,user1,,mysqltest);
connect (con2,localhost,user2,,mysqltest);
connect (con3,localhost,user3,,mysqltest);
connect (con4,localhost,user4,,);
connection con1;
select * from information_schema.column_privileges order by grantee;
select * from information_schema.table_privileges order by grantee;
select * from information_schema.schema_privileges order by grantee;
select * from information_schema.user_privileges order by grantee;
show grants;
connection con2;
select * from information_schema.column_privileges order by grantee;
select * from information_schema.table_privileges order by grantee;
select * from information_schema.schema_privileges order by grantee;
select * from information_schema.user_privileges order by grantee;
show grants;
connection con3;
select * from information_schema.column_privileges order by grantee;
select * from information_schema.table_privileges order by grantee;
select * from information_schema.schema_privileges order by grantee;
select * from information_schema.user_privileges order by grantee;
show grants;
connection con4;
select * from information_schema.column_privileges where grantee like '%user%'
order by grantee;
select * from information_schema.table_privileges where grantee like '%user%'
order by grantee;
select * from information_schema.schema_privileges where grantee like '%user%'
order by grantee;
select * from information_schema.user_privileges where grantee like '%user%'
order by grantee;
show grants;
connection default;
disconnect con1;
disconnect con2;
disconnect con3;
disconnect con4;
drop user user1@localhost, user2@localhost, user3@localhost, user4@localhost;
use test;
drop database mysqltest;

#
# Bug#11055 information_schema: routines.sql_data_access has wrong value
#
--disable_warnings
drop procedure if exists p1;
drop procedure if exists p2;
--enable_warnings

create procedure p1 () modifies sql data set @a = 5;
create procedure p2 () set @a = 5;
select sql_data_access from information_schema.routines
where specific_name like 'p%';
drop procedure p1;
drop procedure p2;

#
# Bug#9434 SHOW CREATE DATABASE information_schema;
#
show create database information_schema;

#
# Bug#11057 information_schema: columns table has some questionable contents
# Bug#12301 information_schema: NUMERIC_SCALE must be 0 for integer columns
#
create table t1(f1 LONGBLOB, f2 LONGTEXT);
select column_name,data_type,CHARACTER_OCTET_LENGTH,
       CHARACTER_MAXIMUM_LENGTH
from information_schema.columns
where table_name='t1';
drop table t1;
create table t1(f1 tinyint, f2 SMALLINT, f3 mediumint, f4 int,
                f5 BIGINT, f6 BIT, f7 bit(64));
select column_name, NUMERIC_PRECISION, NUMERIC_SCALE
from information_schema.columns
where table_name='t1';
drop table t1;

#
# Bug#12127 triggers do not show in info_schema before they are used if set to the database
#
create table t1 (f1 integer);
create trigger tr1 after insert on t1 for each row set @test_var=42;
use information_schema;
select trigger_schema, trigger_name from triggers where
trigger_name='tr1';
use test;
drop table t1;

#
# Bug#12518 COLUMN_DEFAULT has wrong value if NOT NULL is set
#
create table t1 (a int not null, b int);
use information_schema;
select column_name, column_default from columns
  where table_schema='test' and table_name='t1';
use test;
show columns from t1;
drop table t1;

#
# Bug#12636 SHOW TABLE STATUS with where condition containing a subquery
#           over information schema
#

CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int);

--replace_column 8 # 12 # 13 #
SHOW TABLE STATUS FROM test
  WHERE name IN ( SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
                    WHERE TABLE_SCHEMA='test' AND TABLE_TYPE='BASE TABLE');

DROP TABLE t1,t2;

#
# Bug#12905 show fields from view behaving erratically with current database
#
create table t1(f1 int);
create view v1 (c) as select f1 from t1;
connect (con5,localhost,root,,*NO-ONE*);
select database();
show fields from test.v1;
connection default;
disconnect con5;
drop view v1;
drop table t1;

#
# Bug#9846 Inappropriate error displayed while dropping table from 'INFORMATION_SCHEMA'
#
--error ER_PARSE_ERROR
alter database information_schema;
--error ER_DBACCESS_DENIED_ERROR
drop database information_schema;
--error ER_DBACCESS_DENIED_ERROR
drop table information_schema.tables;
--error ER_DBACCESS_DENIED_ERROR
alter table information_schema.tables;
#
# Bug#9683 INFORMATION_SCH: Creation of temporary table allowed in Information_schema DB
#
use information_schema;
--error ER_DBACCESS_DENIED_ERROR
create temporary table schemata(f1 char(10));
#
# Bug#10708 SP's can use INFORMATION_SCHEMA as ROUTINE_SCHEMA
#
delimiter |;
--error ER_DBACCESS_DENIED_ERROR
CREATE PROCEDURE p1 ()
BEGIN
  SELECT 'foo' FROM DUAL;
END |
delimiter ;|
select ROUTINE_NAME from routines where ROUTINE_SCHEMA='information_schema';
#
# Bug#10734 Grant of privileges other than 'select' and 'create view' should fail on schema
#
--error ER_DBACCESS_DENIED_ERROR
grant all on information_schema.* to 'user1'@'localhost';
--error ER_DBACCESS_DENIED_ERROR
grant select on information_schema.* to 'user1'@'localhost';

#
# Bug#14089 FROM list subquery always fails when information_schema is current database
#
use test;
create table t1(id int);
insert into t1(id) values (1);
select 1 from (select 1 from test.t1) a;
use information_schema;
select 1 from (select 1 from test.t1) a;
use test;
drop table t1;

#
# Bug#14476 `information_schema`.`TABLES`.`TABLE_TYPE` with empty value
#
create table t1 (f1 int(11));
create view v1 as select * from t1;
drop table t1;
select table_type from information_schema.tables
where table_name="v1";
drop view v1;

#
# Bug#14387 SHOW COLUMNS doesn't work on temporary tables
# Bug#15224 SHOW INDEX from temporary table doesn't work
# Bug#12770 DESC cannot display the info. about temporary table
#
create temporary table t1(f1 int, index(f1));
show columns from t1;
describe t1;
show indexes from t1;
drop table t1;

#
# Bug#14271 I_S: columns has no size for (var)binary columns
#
create table t1(f1 binary(32), f2 varbinary(64));
select character_maximum_length, character_octet_length
from information_schema.columns where table_name='t1';
drop table t1;

#
# Bug#15533 crash, information_schema, function, view
#
CREATE TABLE t1 (f1 BIGINT, f2 VARCHAR(20), f3 BIGINT);
INSERT INTO t1 SET f1 = 1, f2 = 'Schoenenbourg', f3 = 1;

CREATE FUNCTION func2() RETURNS BIGINT RETURN 1;

delimiter //;
CREATE FUNCTION func1() RETURNS BIGINT
BEGIN
  RETURN ( SELECT COUNT(*) FROM INFORMATION_SCHEMA.VIEWS);
END//
delimiter ;//

CREATE VIEW v1 AS SELECT 1 FROM t1
                    WHERE f3 = (SELECT func2 ());
SELECT func1();
DROP TABLE t1;
DROP VIEW v1;
DROP FUNCTION func1;
DROP FUNCTION func2;


#
# Bug#15307 GROUP_CONCAT() with ORDER BY returns empty set on information_schema
#
select column_type, group_concat(table_schema, '.', table_name), count(*) as num
from information_schema.columns where
table_schema='information_schema' and
(column_type = 'varchar(7)' or column_type = 'varchar(20)'
 or column_type = 'varchar(27)')
group by column_type order by num;

#
# Bug#19236 bad COLUMNS.CHARACTER_MAXIMUM_LENGHT and CHARACTER_OCTET_LENGTH
#
create table t1(f1 char(1) not null, f2 char(9) not null)
default character set utf8;
select CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH from
information_schema.columns where table_schema='test' and table_name = 't1';
drop table t1;

#
# Bug#18177 any access to INFORMATION_SCHEMA.ROUTINES crashes
#
use mysql;
INSERT INTO `proc` VALUES ('test','','PROCEDURE','','SQL','CONTAINS_SQL',
'NO','DEFINER','','','BEGIN\r\n  \r\nEND','root@%','2006-03-02 18:40:03',
'2006-03-02 18:40:03','','','utf8','utf8_general_ci','utf8_general_ci','n/a');
select routine_name from information_schema.routines where ROUTINE_SCHEMA='test';
delete from proc where name='';
use test;

#
# Bug#16681 information_schema shows forbidden VIEW details
#
grant select on test.* to mysqltest_1@localhost;
create table t1 (id int);
create view v1 as select * from t1;
create definer = mysqltest_1@localhost
sql security definer view v2 as select 1;

connect (con16681,localhost,mysqltest_1,,test);
connection con16681;

select * from information_schema.views
where table_name='v1' or table_name='v2';
connection default;
disconnect con16681;
drop view v1, v2;
drop table t1;
drop user mysqltest_1@localhost;

#
# Bug#19599 duplication of information_schema column value in a CONCAT expr with user var
#
set @a:= '.';
create table t1(f1 char(5));
create table t2(f1 char(5));
select concat(@a, table_name), @a, table_name
from information_schema.tables where table_schema = 'test';
drop table t1,t2;


#
# Bug#20230 routine_definition is not null
#
--disable_warnings
DROP PROCEDURE IF EXISTS p1;
DROP FUNCTION IF EXISTS f1;
--enable_warnings

CREATE PROCEDURE p1() SET @a= 1;
CREATE FUNCTION f1() RETURNS INT RETURN @a + 1;
CREATE USER mysql_bug20230@localhost;
GRANT EXECUTE ON PROCEDURE p1 TO mysql_bug20230@localhost;
GRANT EXECUTE ON FUNCTION f1 TO mysql_bug20230@localhost;

SELECT ROUTINE_NAME, ROUTINE_DEFINITION FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_SCHEMA='test';
SHOW CREATE PROCEDURE p1;
SHOW CREATE FUNCTION f1;

connect (conn1, localhost, mysql_bug20230,,);

SELECT ROUTINE_NAME, ROUTINE_DEFINITION FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_SCHEMA='test';
SHOW CREATE PROCEDURE p1;
SHOW CREATE FUNCTION f1;
CALL p1();
SELECT f1();

disconnect conn1;
connection default;

DROP FUNCTION f1;
DROP PROCEDURE p1;
DROP USER mysql_bug20230@localhost;

#
# Bug#21231 query with a simple non-correlated subquery over
#           INFORMARTION_SCHEMA.TABLES
#

SELECT MAX(table_name) FROM information_schema.tables WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test') and table_name not like 'xtradb%';
SELECT table_name from information_schema.tables
  WHERE table_name=(SELECT MAX(table_name)
                      FROM information_schema.tables WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test') and table_name not like 'xtradb%');
#
# Bug #23037 Bug in field "Default" of query "SHOW COLUMNS FROM table"
#
# Note, MyISAM/InnoDB can't take more that 65532 chars, because the row
# size is limited to 65535 bytes (BLOBs not counted)
#
--disable_warnings
DROP TABLE IF EXISTS bug23037;
DROP FUNCTION IF EXISTS get_value;
--enable_warnings
--disable_query_log
DELIMITER |;
CREATE FUNCTION get_value()
  RETURNS TEXT
  DETERMINISTIC
BEGIN
  DECLARE col1, col2, col3, col4, col6 CHAR(255);
  DECLARE default_val VARCHAR(65532);
  DECLARE done INT DEFAULT 0;
  DECLARE cur1 CURSOR FOR SELECT COLUMN_NAME, COLUMN_TYPE, IS_NULLABLE, COLUMN_KEY, COLUMN_DEFAULT, EXTRA FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='bug23037';
  DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1;
  OPEN cur1;
  FETCH cur1 INTO col1, col2, col3, col4, default_val, col6;
  CLOSE cur1;
  RETURN default_val;
end|
DELIMITER ;|

let $body=`SELECT REPEAT('A', 65532)`;
eval CREATE TABLE bug23037(fld1 VARCHAR(65532) CHARACTER SET latin1 DEFAULT "$body");
--enable_query_log

SELECT COLUMN_NAME, MD5(COLUMN_DEFAULT), LENGTH(COLUMN_DEFAULT) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='bug23037';

SELECT MD5(get_value());

SELECT COLUMN_NAME, MD5(COLUMN_DEFAULT), LENGTH(COLUMN_DEFAULT), COLUMN_DEFAULT=get_value() FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='bug23037';

DROP TABLE bug23037;
DROP FUNCTION get_value;

#
# Bug#22413 EXPLAIN SELECT FROM view with ORDER BY yield server crash
#
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
create view v1 as
select table_schema as object_schema,
       table_name   as object_name,
       table_type   as object_type
from information_schema.tables
order by object_schema;
explain select * from v1;
explain select * from (select table_name from information_schema.tables) as a;
set optimizer_switch=@tmp_optimizer_switch;
drop view v1;

#
# Bug#23299 Some queries against INFORMATION_SCHEMA with subqueries fail
#
create table t1 (f1 int(11));
create table t2 (f1 int(11), f2 int(11));

select table_name from information_schema.tables
where table_schema = 'test' and table_name not in
(select table_name from information_schema.columns
 where table_schema = 'test' and column_name = 'f3');
drop table t1,t2;


#
# Bug#28266 IS_UPDATABLE field on VIEWS table in I_S database is wrong
#
create table t1(f1 int);
create view v1 as select f1+1 as a from t1;
create table t2 (f1 int, f2 int);
create view v2 as select f1+1 as a, f2 as b from t2;
select table_name, is_updatable from information_schema.views;
#
# Note: we can perform 'delete' for non updatable view.
#
delete from v1;
drop view v1,v2;
drop table t1,t2;

#
# Bug#25859 ALTER DATABASE works w/o parameters
#
--error ER_PARSE_ERROR
alter database;
--error ER_PARSE_ERROR
alter database test;

#
# Bug#27629 Possible security flaw in INFORMATION_SCHEMA and SHOW statements
#

create database mysqltest;
create table mysqltest.t1(a int, b int, c int);
create trigger mysqltest.t1_ai after insert on mysqltest.t1
  for each row set @a = new.a + new.b + new.c;
grant select(b) on mysqltest.t1 to mysqltest_1@localhost;

select trigger_name from information_schema.triggers
where event_object_table='t1';
show triggers from mysqltest;

connect (con27629,localhost,mysqltest_1,,mysqltest);
show columns from t1;
select column_name from information_schema.columns where table_name='t1';

show triggers;
select trigger_name from information_schema.triggers
where event_object_table='t1';
connection default;
disconnect con27629;
drop user mysqltest_1@localhost;
drop database mysqltest;

#
# Bug#27747 database metadata doesn't return sufficient column default info
#
create table t1 (
  f1 varchar(50),
  f2 varchar(50) not null,
  f3 varchar(50) default '',
  f4 varchar(50) default NULL,
  f5 bigint not null,
  f6 bigint not null default 10,
  f7 datetime not null,
  f8 datetime default '2006-01-01'
);
select column_default from information_schema.columns where table_name= 't1';
show columns from t1;
drop table t1;

#
# Bug#30079 A check for "hidden" I_S tables is flawed
#
--error ER_UNKNOWN_TABLE
show fields from information_schema.table_names;
--error ER_UNKNOWN_TABLE
show keys from information_schema.table_names;

#
# Bug#34529 Crash on complex Falcon I_S select after ALTER .. PARTITION BY
#
USE information_schema;
SET max_heap_table_size = 16384;

CREATE TABLE test.t1( a INT );

# What we need to create here is a bit of a corner case:
# We need a star query with information_schema tables, where the first
# branch of the star join produces zero rows, so that reading of the
# second branch never happens. At the same time we have to make sure
# that data for at least the last table is swapped from MEMORY/HEAP to
# MyISAM. This and only this triggers the bug.
SELECT *
FROM tables ta
JOIN collations co ON ( co.collation_name = ta.table_catalog )
JOIN character_sets cs ON ( cs.character_set_name = ta.table_catalog );

DROP TABLE test.t1;
SET max_heap_table_size = DEFAULT;
USE test;

--echo End of 5.0 tests.

#
# Show engines
#

select * from information_schema.engines WHERE ENGINE="MyISAM";

#
# INFORMATION_SCHEMA.PROCESSLIST
#

grant select on *.* to user3148@localhost;
connect (con3148,localhost,user3148,,test);
connection con3148;
select user,db from information_schema.processlist;
connection default;
disconnect con3148;
drop user user3148@localhost;

#
# `time` and `time_ms` columns of INFORMATION_SCHEMA.PROCESSLIST.
#
connect (pslistcon,localhost,root,,test);
let $ID= `select connection_id()`;
SELECT 'other connection here' AS who;
connection default;
sleep 2;
--disable_query_log
eval SET @tid=$ID;
--enable_query_log
SELECT IF(`time` > 0, 'OK', `time`) AS time_low,
       IF(`time` < 1000, 'OK', `time`) AS time_high,
       IF(time_ms >= 1000, 'OK', time_ms) AS time_ms_low,
       IF(time_ms < 1000000, 'OK', time_ms) AS time_ms_high
  FROM INFORMATION_SCHEMA.PROCESSLIST
 WHERE ID=@tid;
disconnect pslistcon;

#
# Bug#26174 Server Crash: INSERT ... SELECT ... FROM I_S.GLOBAL_STATUS
# in Event (see also openssl_1.test)
#
--disable_warnings
DROP TABLE IF EXISTS server_status;
DROP EVENT IF EXISTS event_status;
--enable_warnings

SET GLOBAL event_scheduler=1;

DELIMITER $$;

CREATE EVENT event_status
 ON SCHEDULE AT NOW()
 ON COMPLETION NOT PRESERVE
 DO
BEGIN
  CREATE TABLE server_status
  SELECT variable_name
  FROM information_schema.global_status
  WHERE variable_name LIKE 'ABORTED_CONNECTS' OR
  variable_name LIKE 'BINLOG_CACHE_DISK_USE';
END$$

DELIMITER ;$$

let $wait_timeout= 300;
let $wait_condition=select count(*) = 0 from information_schema.events where event_name='event_status';
--source include/wait_condition.inc

SELECT variable_name FROM server_status;

DROP TABLE server_status;
SET GLOBAL event_scheduler=0;


#
# WL#3732 Information schema optimization
#

explain select table_name from information_schema.views where
table_schema='test' and table_name='v1';

explain select * from information_schema.tables;
explain select * from information_schema.collations;

explain select * from information_schema.tables where
table_schema='test' and table_name= 't1';
explain select table_name, table_type from information_schema.tables
where table_schema='test';

explain select b.table_name
from information_schema.tables a, information_schema.columns b
where a.table_name='t1' and a.table_schema='test' and b.table_name=a.table_name;

#
# Bug#30310 wrong result on SELECT * FROM INFORMATION_SCHEMA.SCHEMATA WHERE ..
#
SELECT * FROM INFORMATION_SCHEMA.SCHEMATA
WHERE SCHEMA_NAME = 'mysqltest';

SELECT * FROM INFORMATION_SCHEMA.SCHEMATA
WHERE SCHEMA_NAME = '';

SELECT * FROM INFORMATION_SCHEMA.SCHEMATA
WHERE SCHEMA_NAME = 'test';

select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='mysql' AND TABLE_NAME='nonexisting';
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='mysql' AND TABLE_NAME='';
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='' AND TABLE_NAME='';
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='' AND TABLE_NAME='nonexisting';

#
# Bug#30689 Wrong content in I_S.VIEWS.VIEW_DEFINITION if VIEW is based on I_S
#
CREATE VIEW v1
AS SELECT *
FROM information_schema.tables;
SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS where TABLE_NAME = 'v1';
DROP VIEW v1;

#
# Bug#30795 Query on INFORMATION_SCHEMA.SCHEMATA, wrong result
#
SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA
WHERE SCHEMA_NAME ='information_schema';

#
# Bug#31381 Error in retrieving Data from INFORMATION_SCHEMA
#
SELECT TABLE_COLLATION FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA='mysql' and TABLE_NAME= 'db';

#
# Bug#31633 Information schema = NULL queries crash the server
#
select * from information_schema.columns where table_schema = NULL;
select * from `information_schema`.`COLUMNS` where `TABLE_NAME` = NULL;
select * from `information_schema`.`KEY_COLUMN_USAGE` where `TABLE_SCHEMA` = NULL;
select * from `information_schema`.`KEY_COLUMN_USAGE` where `TABLE_NAME` = NULL;
select * from `information_schema`.`PARTITIONS` where `TABLE_SCHEMA` = NULL;
select * from `information_schema`.`PARTITIONS` where `TABLE_NAME` = NULL;
select * from `information_schema`.`REFERENTIAL_CONSTRAINTS` where `CONSTRAINT_SCHEMA` = NULL;
select * from `information_schema`.`REFERENTIAL_CONSTRAINTS` where `TABLE_NAME` = NULL;
select * from information_schema.schemata where schema_name = NULL;
select * from `information_schema`.`STATISTICS` where `TABLE_SCHEMA` = NULL;
select * from `information_schema`.`STATISTICS` where `TABLE_NAME` = NULL;
select * from information_schema.tables where table_schema = NULL;
select * from information_schema.tables where table_catalog = NULL;
select * from information_schema.tables where table_name = NULL;
select * from `information_schema`.`TABLE_CONSTRAINTS` where `TABLE_SCHEMA` = NULL;
select * from `information_schema`.`TABLE_CONSTRAINTS` where `TABLE_NAME` = NULL;
select * from `information_schema`.`TRIGGERS` where `EVENT_OBJECT_SCHEMA` = NULL;
select * from `information_schema`.`TRIGGERS` where `EVENT_OBJECT_TABLE` = NULL;
select * from `information_schema`.`VIEWS` where `TABLE_SCHEMA` = NULL;
select * from `information_schema`.`VIEWS` where `TABLE_NAME` = NULL;

#
# Bug#31630 debug assert with explain extended select ... from i_s
#
explain extended select 1 from information_schema.tables;

#
# Bug#32775 problems with SHOW EVENTS and Information_Schema
#
use information_schema;
show events;
show events from information_schema;
show events where Db= 'information_schema';
use test;

--echo #
--echo # Bug#34166 Server crash in SHOW OPEN TABLES and prelocking
--echo #
--disable_warnings
drop table if exists t1;
drop function if exists f1;
--enable_warnings
create table t1 (a int);
delimiter |;
create function f1() returns int
begin
  insert into t1 (a) values (1);
  return 0;
end|
delimiter ;|
--disable_result_log
show open tables where f1()=0;
show open tables where f1()=0;
--enable_result_log
drop table t1;
drop function f1;

#
# Bug#34656 KILL a query = Assertion failed: m_status == DA_ERROR ||
#           m_status == DA_OK
#
connect (conn1, localhost, root,,);
connection conn1;
let $ID= `select connection_id()`;
send select * from information_schema.tables where 1=sleep(100000);
connection default;
let $wait_timeout= 10;
let $wait_condition=select count(*)=1 from information_schema.processlist
where state='User sleep' and
info='select * from information_schema.tables where 1=sleep(100000)';
--source include/wait_condition.inc
disable_query_log;
eval kill $ID;
enable_query_log;
let $wait_timeout= 10;
let $wait_condition=select count(*)=0 from information_schema.processlist
where state='User sleep' and
info='select * from information_schema.tables where 1=sleep(100000)';
--source include/wait_condition.inc
connection conn1;
--error 2013,ER_CONNECTION_KILLED
reap;
connection default;
disconnect conn1;

connect (conn1, localhost, root,,);
connection conn1;
let $ID= `select connection_id()`;
send select * from information_schema.columns where 1=sleep(100000);
connection default;
let $wait_timeout= 10;
let $wait_condition=select count(*)=1 from information_schema.processlist
where state='User sleep' and
info='select * from information_schema.columns where 1=sleep(100000)';
--source include/wait_condition.inc
disable_query_log;
eval kill $ID;
enable_query_log;
let $wait_timeout= 10;
let $wait_condition=select count(*)=0 from information_schema.processlist
where state='User sleep' and
info='select * from information_schema.columns where 1=sleep(100000)';
--source include/wait_condition.inc
connection conn1;
--error 2013,ER_CONNECTION_KILLED
reap;
connection default;
disconnect conn1;


#
# Bug#38918 selecting from information_schema.columns is disproportionately slow
#
explain select count(*) from information_schema.tables;
explain select count(*) from information_schema.columns;
explain select count(*) from information_schema.views;

#
# Bug#39955 SELECT on INFORMATION_SCHEMA.GLOBAL_VARIABLES takes too long
#
set global init_connect="drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;\
drop table if exists t1;drop table if exists t1;";
select * from information_schema.global_variables where variable_name='init_connect';
--replace_regex /at row [123]/at row #/
select * from information_schema.global_variables where variable_name like 'init%' order by variable_name;
set global init_connect="";

#
# Bug#34517 SHOW GLOBAL STATUS does not work properly in embedded server.
#

create table t0 select * from information_schema.global_status where VARIABLE_NAME='COM_SELECT';
SELECT 1;
select a.VARIABLE_VALUE - b.VARIABLE_VALUE from t0 b, information_schema.global_status a
   where a.VARIABLE_NAME = b.VARIABLE_NAME;
drop table t0;

#
# Bug#35275 INFORMATION_SCHEMA.TABLES.CREATE_OPTIONS omits KEY_BLOCK_SIZE
#
CREATE TABLE t1(a INT) KEY_BLOCK_SIZE=1;
SELECT CREATE_OPTIONS FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='t1';
DROP TABLE t1;

#
# Bug #22047: Time in SHOW PROCESSLIST for SQL thread in replication seems
# to become negative
#
# Note that at the time of writing, MariaDB differs in behaviour from MySQL on
# the `time` column. In MySQL this changes depending on the setting of
# @TIMESTAMP, which is contrary to the documented (and sensible) behaviour.
# In MariaDB, the `time` column is independent of @TIMESTAMP.
# (The rationale for this is to keep `time` and `time_ms` consistent;
# @TIMESTAMP has no microsecond precision).
#

SET TIMESTAMP=@@TIMESTAMP + 10000000;
SELECT 'NOT_OK' AS TEST_RESULT FROM INFORMATION_SCHEMA.PROCESSLIST WHERE time < 0;
SET TIMESTAMP=DEFAULT;


--echo #
--echo # Bug #50276: Security flaw in INFORMATION_SCHEMA.TABLES
--echo #
CREATE DATABASE db1;
USE db1;
CREATE TABLE t1 (id INT);
CREATE USER nonpriv;
USE test;

connect (nonpriv_con, localhost, nonpriv,,);
connection nonpriv_con;
--echo # connected as nonpriv
--echo # Should return 0
SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='t1';
USE INFORMATION_SCHEMA;
--echo # Should return 0
SELECT COUNT(*) FROM TABLES WHERE TABLE_NAME='t1';

connection default;
--echo # connected as root
disconnect nonpriv_con;
DROP USER nonpriv;
DROP TABLE db1.t1;
DROP DATABASE db1;

--echo
--echo Bug#54422 query with = 'variables'
--echo

CREATE TABLE variables(f1 INT);
SELECT COLUMN_DEFAULT, TABLE_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = 'variables';
DROP TABLE variables;

--echo #
--echo # Bug #53814: NUMERIC_PRECISION for unsigned bigint field is 19, 
--echo # should be 20
--echo #

CREATE TABLE ubig (a BIGINT, b BIGINT UNSIGNED);

SELECT TABLE_NAME, COLUMN_NAME, NUMERIC_PRECISION 
  FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='ubig';

INSERT INTO ubig VALUES (0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF);
SELECT length(CAST(b AS CHAR)) FROM ubig;

DROP TABLE ubig;

#
# Bug #13889741: HANDLE_FATAL_SIGNAL IN _DB_ENTER_ | HANDLE_FATAL_SIGNAL IN STRNLEN
#
select 1 from information_schema.tables where table_schema=repeat('a', 2000);
grant usage on *.* to mysqltest_1@localhost;
connect (con1, localhost, mysqltest_1,,);
connection con1;
select 1 from information_schema.tables where table_schema=repeat('a', 2000);
connection default;
disconnect con1;
drop user mysqltest_1@localhost;

--echo End of 5.1 tests.

--echo #
--echo # Additional test for WL#3726 "DDL locking for all metadata objects"
--echo # To avoid possible deadlocks process of filling of I_S tables should
--echo # use high-priority metadata lock requests when opening tables.
--echo # Below we just test that we really use high-priority lock request
--echo # since reproducing a deadlock will require much more complex test.
--echo #
--disable_warnings
drop tables if exists t1, t2, t3;
--enable_warnings
create table t1 (i int);
create table t2 (j int primary key auto_increment);
connect (con3726_1,localhost,root,,test);
--echo # Switching to connection 'con3726_1'
connection con3726_1;
lock table t2 read;
connect (con3726_2,localhost,root,,test);
--echo # Switching to connection 'con3726_2'
connection con3726_2;
--echo # RENAME below will be blocked by 'lock table t2 read' above but
--echo # will add two pending requests for exclusive metadata locks.
--send rename table t2 to t3
--echo # Switching to connection 'default'
connection default;
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for table metadata lock" and
        info like "rename table t2 to t3";
--source include/wait_condition.inc
--echo # These statements should not be blocked by pending lock requests
select table_name, column_name, data_type from information_schema.columns
  where table_schema = 'test' and table_name in ('t1', 't2');
select table_name, auto_increment from information_schema.tables
  where table_schema = 'test' and table_name in ('t1', 't2');
--echo # Switching to connection 'con3726_1'
connection con3726_1;
unlock tables;
--echo # Switching to connection 'con3726_2'
connection con3726_2;
--reap
--echo # Switching to connection 'default'
connection default;
disconnect con3726_1;
disconnect con3726_2;
drop tables t1, t3;

#
# Bug#39270 I_S optimization algorithm does not work properly in some cases
#
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE;
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME='t1';
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
  WHERE CONSTRAINT_SCHEMA='test';
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
  WHERE TABLE_NAME='t1' and TABLE_SCHEMA='test';
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.TRIGGERS
  WHERE EVENT_OBJECT_SCHEMA='test';

#
# Bug#24062 Incorrect error msg after execute DROP TABLE IF EXISTS on information_schema
#
--error ER_DBACCESS_DENIED_ERROR
create table information_schema.t1 (f1 INT);
--error ER_DBACCESS_DENIED_ERROR
drop table information_schema.t1;
--error ER_DBACCESS_DENIED_ERROR
drop temporary table if exists information_schema.t1;
--error ER_DBACCESS_DENIED_ERROR
create temporary table information_schema.t1 (f1 INT);
--error ER_DBACCESS_DENIED_ERROR
drop view information_schema.v1;
--error ER_DBACCESS_DENIED_ERROR
create view information_schema.v1;
--error ER_DBACCESS_DENIED_ERROR
create trigger mysql.trg1 after insert on information_schema.t1 for each row set @a=1;
--error 1109
create table t1 select * from information_schema.t1;

CREATE TABLE t1(f1 char(100));
--error ER_DBACCESS_DENIED_ERROR
REPAIR TABLE t1, information_schema.tables;
CHECKSUM TABLE t1, information_schema.tables;
--error ER_DBACCESS_DENIED_ERROR
ANALYZE TABLE t1, information_schema.tables;
CHECK TABLE t1, information_schema.tables;
--error ER_DBACCESS_DENIED_ERROR
OPTIMIZE TABLE t1, information_schema.tables;
--error ER_DBACCESS_DENIED_ERROR
RENAME TABLE v1 to v2, information_schema.tables to t2;
--error ER_DBACCESS_DENIED_ERROR
DROP TABLE t1, information_schema.tables;

--error ER_DBACCESS_DENIED_ERROR
LOCK TABLES t1 READ, information_schema.tables READ;
DROP TABLE t1;


#
# Bug #43834    Assertion in Natural_join_column::db_name() on an I_S query
#

SELECT *
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
LEFT JOIN INFORMATION_SCHEMA.COLUMNS
USING (TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME)
WHERE COLUMNS.TABLE_SCHEMA = 'test'
AND COLUMNS.TABLE_NAME = 't1';


--echo #
--echo # A test case for Bug#56540 "Exception (crash) in sql_show.cc
--echo # during rqg_info_schema test on Windows"
--echo # Ensure that we never access memory of a closed table,
--echo # in particular, never access table->field[] array.
--echo # Before the fix, the below test case, produced
--echo # valgrind errors.
--echo #

--disable_warnings
drop table if exists t1;
drop view if exists v1;
--enable_warnings

create table t1 (a int, b int);
create view v1 as select t1.a, t1.b from t1;
alter table t1 change b c int;
lock table t1 read;
connect(con1, localhost, root,,);
--echo # --> connection con1
connection con1;
send flush tables;
--echo # --> connection default
connection default;
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
    where state = "Waiting for table flush" and
          info = "flush tables";
--source include/wait_condition.inc
--vertical_results
select * from information_schema.views;
--horizontal_results
unlock tables;

--echo #
--echo # Cleanup.
--echo #

--echo # --> connection con1
connection con1;
--echo # Reaping 'flush tables'
reap;
disconnect con1;
--source include/wait_until_disconnected.inc
--echo # --> connection default
connection default;
drop table t1;
drop view v1;


--echo #
--echo # Test for bug #12828477 - "MDL SUBSYSTEM CREATES BIG OVERHEAD FOR
--echo #                           CERTAIN QUERIES TO INFORMATION_SCHEMA".
--echo #
--echo # Check that metadata locks which are acquired during the process
--echo # of opening tables/.FRMs/.TRG files while filling I_S table are
--echo # not kept to the end of statement. Keeping the locks has caused
--echo # performance problems in cases when big number of tables (.FRMs
--echo # or .TRG files) were scanned as cost of new lock acquisition has
--echo # increased linearly.
--disable_warnings
drop database if exists mysqltest;
--enable_warnings
create database mysqltest;
use mysqltest;
create table t0 (i int);
create table t1 (j int);
create table t2 (k int);

--echo #
--echo # Test that we don't keep locks in case when we to fill
--echo # I_S table we perform full-blown table open.
--echo #

--echo # Acquire lock on 't2' so upcoming RENAME is
--echo # blocked.
lock tables t2 read;

--echo #
--echo # Switching to connection 'con12828477_1'. 
--echo #
connect (con12828477_1, localhost, root,,mysqltest);
--echo # The below RENAME should wait on 't2' while
--echo # keeping X lock on 't1'.
--send rename table t1 to t3, t2 to t1, t3 to t2

--echo #
--echo # Switching to connection 'con12828477_2'. 
--echo #
connect (con12828477_2, localhost, root,,mysqltest);
--echo # Wait while the above RENAME is blocked.
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for table metadata lock" and
        info = "rename table t1 to t3, t2 to t1, t3 to t2";
--source include/wait_condition.inc

--echo # Issue query to I_S which will open 't0' and get
--echo # blocked on 't1' because of RENAME.
--send select table_name, auto_increment from information_schema.tables where table_schema='mysqltest'

--echo #
--echo # Switching to connection 'con12828477_3'. 
--echo #
connect (con12828477_3, localhost, root,,mysqltest);
--echo # Wait while the above SELECT is blocked.
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for table metadata lock" and
        info = "select table_name, auto_increment from information_schema.tables where table_schema='mysqltest'";
--source include/wait_condition.inc

--echo #
--echo # Check that it holds no lock on 't0' so it can be renamed.
rename table t0 to t4;

--echo #
--echo # Switching to connection 'default'.
--echo #
connection default;
--echo #
--echo # Unblock the first RENAME.
unlock tables;

--echo #
--echo # Switching to connection 'con12828477_1'. 
--echo #
connection con12828477_1;
--echo # Reap the first RENAME
--reap

--echo #
--echo # Switching to connection 'con12828477_2'. 
--echo #
connection con12828477_2;
--echo # Reap SELECT to I_S.
--reap

--echo #
--echo # Switching to connection 'default'.
--echo #
connection default;

--echo #
--echo # Now test that we don't keep locks in case when we to fill
--echo # I_S table we read .FRM or .TRG file only (this was the case
--echo # for which problem existed).
--echo #

rename table t4 to t0;
--echo # Acquire lock on 't2' so upcoming RENAME is
--echo # blocked.
lock tables t2 read;

--echo #
--echo # Switching to connection 'con12828477_1'. 
--echo #
connection con12828477_1;
--echo # The below RENAME should wait on 't2' while
--echo # keeping X lock on 't1'.
--send rename table t1 to t3, t2 to t1, t3 to t2

--echo #
--echo # Switching to connection 'con12828477_2'. 
--echo #
connection con12828477_2;
--echo # Wait while the above RENAME is blocked.
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for table metadata lock" and
        info = "rename table t1 to t3, t2 to t1, t3 to t2";
--source include/wait_condition.inc

--echo # Issue query to I_S which will open 't0' and get
--echo # blocked on 't1' because of RENAME.
--send select event_object_table, trigger_name from information_schema.triggers where event_object_schema='mysqltest'

--echo #
--echo # Switching to connection 'con12828477_3'. 
--echo #
connection con12828477_3;
--echo # Wait while the above SELECT is blocked.
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for table metadata lock" and
        info = "select event_object_table, trigger_name from information_schema.triggers where event_object_schema='mysqltest'";
--source include/wait_condition.inc

--echo #
--echo # Check that it holds no lock on 't0' so it can be renamed.
rename table t0 to t4;

--echo #
--echo # Switching to connection 'default'.
--echo #
connection default;
--echo #
--echo # Unblock the first RENAME.
unlock tables;

--echo #
--echo # Switching to connection 'con12828477_1'. 
--echo #
connection con12828477_1;
--echo # Reap the first RENAME
--reap

--echo #
--echo # Switching to connection 'con12828477_2'. 
--echo #
connection con12828477_2;
--echo # Reap SELECT to I_S.
--reap

--echo #
--echo # Switching to connection 'default'.
--echo #
connection default;
disconnect con12828477_1;
disconnect con12828477_2;
disconnect con12828477_3;


--echo #
--echo # MDEV-3818: Query against view over IS tables worse than equivalent query without view
--echo #

create view v1 as select table_schema, table_name, column_name from information_schema.columns;

explain extended
select column_name from v1
where (table_schema = "osm") and (table_name = "test");

explain extended
select information_schema.columns.column_name as column_name
from information_schema.columns
where (information_schema.columns.table_schema = 'osm') and (information_schema.columns.table_name = 'test');

drop view v1;

--echo #
--echo # Clean-up.
drop database mysqltest;

--echo #
--echo # Test for bug #16869534 - "QUERYING SUBSET OF COLUMNS DOESN'T USE TABLE
--echo #                           CACHE; OPENED_TABLES INCREASES"
--echo #
--disable_result_log
SELECT * FROM INFORMATION_SCHEMA.TABLES;
--enable_result_log
SELECT VARIABLE_VALUE INTO @val1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE
  VARIABLE_NAME LIKE 'Opened_tables';
--disable_result_log
SELECT ENGINE FROM INFORMATION_SCHEMA.TABLES;
--enable_result_log
--echo # The below SELECT query should give same output as above SELECT query.
SELECT VARIABLE_VALUE INTO @val2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE
  VARIABLE_NAME LIKE 'Opened_tables';
--echo # The below select should return '1'
SELECT @val1 = @val2;

--echo #
--echo # End of 5.5 tests
--echo #

--echo # 
--echo # MDEV-5723: mysqldump -uroot unusable for multi-database operations, checks all databases
--echo # 

--disable_warnings
drop database if exists db1;
--enable_warnings

connect (con1,localhost,root,,);
connection con1;

create database db1;
use db1;
create table t1 (a int);
create table t2 (a int);
create table t3 (a int);

create database mysqltest;
use mysqltest;
create table t1 (a int);
create table t2 (a int);
create table t3 (a int);

flush tables;
flush status;

SELECT 
  LOGFILE_GROUP_NAME, FILE_NAME, TOTAL_EXTENTS, INITIAL_SIZE, ENGINE, EXTRA 
FROM 
  INFORMATION_SCHEMA.FILES 
WHERE 
  FILE_TYPE = 'UNDO LOG' AND FILE_NAME IS NOT NULL AND 
  LOGFILE_GROUP_NAME IN (SELECT DISTINCT LOGFILE_GROUP_NAME 
                         FROM INFORMATION_SCHEMA.FILES 
                         WHERE 
                           FILE_TYPE = 'DATAFILE' AND 
                           TABLESPACE_NAME IN (SELECT DISTINCT TABLESPACE_NAME 
                                               FROM INFORMATION_SCHEMA.PARTITIONS 
                                               WHERE TABLE_SCHEMA IN ('db1')
                                              )
                        ) 
GROUP BY 
  LOGFILE_GROUP_NAME, FILE_NAME, ENGINE 
ORDER BY 
  LOGFILE_GROUP_NAME;

--echo # This must have Opened_tables=3, not 6.
show status like 'Opened_tables';

drop database mysqltest;
drop database db1;

connection default;
disconnect con1;

# Wait till all disconnects are completed
--source include/wait_until_count_sessions.inc

set global sql_mode=default;