information_schema.test 23.2 KB
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# This test  uses grants, which can't get tested for embedded server
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-- source include/not_embedded.inc
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# Test for information_schema.schemata &
# show databases

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


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

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

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create database mysqltest;
create table mysqltest.t1(a int, b VARCHAR(30), KEY string_data (b));
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create table test.t2(a int);
create table t3(a int, KEY a_data (a));
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create table mysqltest.t4(a int);
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create table t5 (id int auto_increment primary key);
insert into t5 values (10);
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create view v1 (c) as select table_name from information_schema.TABLES;
select * from v1;
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select c,table_name from v1 
inner join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";

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

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
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where table_schema = "mysqltest" and table_name like "t%";
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select * from information_schema.STATISTICS where TABLE_SCHEMA = "mysqltest";
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show keys from t3 where Key_name = "a_data";
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show tables like 't%';
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--replace_column 8 # 12 # 13 #
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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";
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show columns from mysqltest.t1 where field like "%a%";

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create view mysqltest.v1 (c) as select a from mysqltest.t1;
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grant select (a) on mysqltest.t1 to mysqltest_2@localhost;
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grant select on mysqltest.v1 to mysqltest_3;
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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;
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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';
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connection default;
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drop view v1, mysqltest.v1;
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drop tables mysqltest.t4, mysqltest.t1, t2, t3, t5;
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drop database mysqltest;
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# 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%';
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SHOW CHARACTER SET WHERE charset like 'latin1%';
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# Test for information_schema.COLLATIONS &
# SHOW COLLATION

select * from information_schema.COLLATIONS
where COLLATION_NAME like 'latin1%';
SHOW COLLATION LIKE 'latin1%';
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SHOW COLLATION WHERE collation like 'latin1%';
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select * from information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
where COLLATION_NAME like 'latin1%';

# Test for information_schema.ROUTINES &
#

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

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

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#
# Bug#7222 information_schema: errors in "routines"
#
select parameter_style, sql_data_access, dtd_identifier 
from information_schema.routines;

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--replace_column 5 # 6 #
show procedure status;
--replace_column 5 # 6 #
show function status;
select a.ROUTINE_NAME from information_schema.ROUTINES a,
information_schema.SCHEMATA b where
a.ROUTINE_SCHEMA = b.SCHEMA_NAME;
--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,
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mysql.proc b where a.ROUTINE_NAME = convert(b.name using utf8) order by 1;
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select count(*) from information_schema.ROUTINES;

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connect (user1,localhost,mysqltest_1,,);
connection user1;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
--error 1305
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;
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--replace_column 5 # 6 #
show function status like "sub2";
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connection default;
disconnect user1;
drop function sub2;
show create procedure sel2;

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

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connection user2;
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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;
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disconnect user2;
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connection default;
delete from mysql.user where user='mysqltest_1';
drop table t1;
drop procedure sel2;
drop function sub1;
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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;

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

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--disable_parsing # until bug is fixed
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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
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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;
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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;

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SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
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set names latin2;
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SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
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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;
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drop table t1;
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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;
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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 1325
call p108()//
delimiter ;//
drop procedure p108;
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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;
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select TABLE_NAME,TABLE_TYPE,ENGINE
from information_schema.tables 
where table_schema='information_schema' limit 2;
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show tables from information_schema like "T%";
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--error 1044
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create database information_schema;
use information_schema;
show full tables like "T%";
--error 1109
create table t1(a int);
use test;
show tables;
use information_schema;
show tables like "T%";
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#
# 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%';

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#
# Bug#7212: information_schema: "Can't find file" errors if storage engine gone
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# Bug#7211: information_schema: crash if bad view
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#
use test;
create function sub1(i int) returns int
  return i+1;
create table t1(f1 int);
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create view v2 (c) as select f1 from t1;
create view v3 (c) as select sub1(1);
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create table t4(f1 int, KEY f1_key (f1));
drop table t1;
drop function sub1;
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select table_name from information_schema.views
where table_schema='test';
select table_name from information_schema.views
where table_schema='test';
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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';
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show create view v2;
show create table v3;
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drop view v2;
drop view v3;
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drop table t4;
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#
# Bug#7213: information_schema: redundant non-standard TABLE_NAMES table
#
--error 1109
select * from information_schema.table_names;
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#
# 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");

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#
# 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";
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# test for 'show open tables ... where'
show open tables where `table` like "user";
# test for 'show status ... where'
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show status where variable_name like "%database%";
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# test for 'show variables ... where'
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show variables where variable_name like "skip_show_databas";
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#
# Bug #7981:SHOW GLOBAL STATUS crashes server
#
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# We don't actually care about the value, just that it doesn't crash.
--replace_column 2 #
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show global status like "Threads_running";
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#
# 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;
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#
# Bug #7476: crash on SELECT * FROM INFORMATION_SCHEMA.TABLES
#

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
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SELECT count(*) FROM INFORMATION_SCHEMA.TABLES;
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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;
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#
# 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';
select table_name, column_name, data_type from information_schema.columns
where data_type = 'datetime';
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#
# 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);
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#
# 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;
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#
# Bug#10261  INFORMATION_SCHEMA.COLUMNS, incomplete result for non root user
#

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grant select on test.* to mysqltest_4@localhost;
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connect (user10261,localhost,mysqltest_4,,);
connection user10261;
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SELECT TABLE_NAME, COLUMN_NAME, PRIVILEGES FROM INFORMATION_SCHEMA.COLUMNS 
where COLUMN_NAME='TABLE_NAME';
connection default;
delete from mysql.user where user='mysqltest_4';
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delete from mysql.db where user='mysqltest_4';
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flush privileges;
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#
# Bug #9404  information_schema: Weird error messages
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# with SELECT SUM() ... GROUP BY queries
#
SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
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#
# 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;

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


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#
# 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;

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connect (con1,localhost,user1,,mysqltest);
connect (con2,localhost,user2,,mysqltest);
connect (con3,localhost,user3,,mysqltest);
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connect (con4,localhost,user4,,);
connection con1;
select * from information_schema.column_privileges;
select * from information_schema.table_privileges;
select * from information_schema.schema_privileges;
select * from information_schema.user_privileges;
show grants;
connection con2;
select * from information_schema.column_privileges;
select * from information_schema.table_privileges;
select * from information_schema.schema_privileges;
select * from information_schema.user_privileges;
show grants;
connection con3;
select * from information_schema.column_privileges;
select * from information_schema.table_privileges;
select * from information_schema.schema_privileges;
select * from information_schema.user_privileges;
show grants;
connection con4;
select * from information_schema.column_privileges where grantee like '%user%';
select * from information_schema.table_privileges where grantee like '%user%';
select * from information_schema.schema_privileges where grantee like '%user%';
select * from information_schema.user_privileges where grantee like '%user%';
show grants;
connection default;
drop user user1@localhost, user2@localhost, user3@localhost, user4@localhost;
use test;
drop database mysqltest;
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#
# Bug #11055 information_schema: routines.sql_data_access has wrong value
#
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--disable_warnings
drop procedure if exists p1;
drop procedure if exists p2;
--enable_warnings

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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;
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#
# Bug #9434 SHOW CREATE DATABASE information_schema;
#
show create database information_schema;
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#
# Bug #11057 information_schema: columns table has some questionable contents
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# Bug #12301 information_schema: NUMERIC_SCALE must be 0 for integer columns
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#
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;
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#
# 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;
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#
# 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;
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show columns from t1;
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drop table t1;
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#
# 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');

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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;
drop view v1;
drop table t1;
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#
# Bug #9846 Inappropriate error displayed while dropping table from 'INFORMATION_SCHEMA'
#
--error 1044
alter database information_schema;
--error 1044
drop database information_schema;
--error 1044
drop table information_schema.tables;
--error 1044
alter table information_schema.tables;
#
# Bug #9683 INFORMATION_SCH: Creation of temporary table allowed in Information_schema DB
#
use information_schema;
--error 1044
create temporary table schemata(f1 char(10));
#
# Bug #10708 SP's can use INFORMATION_SCHEMA as ROUTINE_SCHEMA
#
delimiter |;
--error 1044
CREATE PROCEDURE p1 ()
BEGIN
  SELECT 'foo' FROM DUAL;
END |
delimiter ;|
select  ROUTINE_NAME from routines;
#
# Bug #10734 Grant of privileges other than 'select' and 'create view' should fail on schema
#
--error 1044
grant all on information_schema.* to 'user1'@'localhost';
--error 1044
grant select on information_schema.* to 'user1'@'localhost';
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#
# 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;
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#
# Bug #14290: character_maximum_length for text fields
#

create table t1(a blob, b text charset utf8, c text charset ucs2);
select data_type, character_octet_length, character_maximum_length 
  from information_schema.columns where table_name='t1';
drop table t1;
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#
# 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;
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#
# 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;
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#
# 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;
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#
# 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;
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#
# Bug #15851 Unlistable directories yield no info from information_schema
#
create database mysqltest;
create table mysqltest.t1(a int);
--exec chmod -r $MYSQL_TEST_DIR/var/master-data/mysqltest
select table_schema from information_schema.tables where table_schema='mysqltest';
--exec chmod +r $MYSQL_TEST_DIR/var/master-data/mysqltest
drop database mysqltest;