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mariadb/mysql-test/r/information_schema.result
unknown 38ebb6c638 Merge mysqldev@production.mysql.com:my/mysql-5.0-release 
into  mysql.com:/opt/local/work/mysql-5.0-root


BitKeeper/etc/ignore:
  auto-union
include/my_sys.h:
  Auto merged
mysql-test/r/information_schema.result:
  Auto merged
mysql-test/t/ctype_ujis.test:
  Auto merged
sql/ha_federated.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/log.cc:
  Auto merged
sql/sp_head.cc:
  Auto merged
sql/sp_head.h:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
sql/table.cc:
  Auto merged
2005-09-23 00:46:59 +04:00

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DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5;
DROP VIEW IF EXISTS v1;
show variables where variable_name like "skip_show_database";
Variable_name Value
skip_show_database OFF
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';
CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH
NULL mysql latin1 latin1_swedish_ci NULL
NULL test latin1 latin1_swedish_ci NULL
select schema_name from information_schema.schemata;
schema_name
information_schema
mysql
test
show databases like 't%';
Database (t%)
test
show databases;
Database
information_schema
mysql
test
show databases where `database` = 't%';
Database
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;
select * from v1;
c
CHARACTER_SETS
COLLATIONS
COLLATION_CHARACTER_SET_APPLICABILITY
COLUMNS
COLUMN_PRIVILEGES
KEY_COLUMN_USAGE
ROUTINES
SCHEMATA
SCHEMA_PRIVILEGES
STATISTICS
TABLES
TABLE_CONSTRAINTS
TABLE_PRIVILEGES
TRIGGERS
VIEWS
USER_PRIVILEGES
columns_priv
db
func
help_category
help_keyword
help_relation
help_topic
host
proc
procs_priv
tables_priv
time_zone
time_zone_leap_second
time_zone_name
time_zone_transition
time_zone_transition_type
user
t1
t4
t2
t3
t5
v1
select c,table_name from v1
inner join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";
c table_name
TABLES TABLES
TABLE_CONSTRAINTS TABLE_CONSTRAINTS
TABLE_PRIVILEGES TABLE_PRIVILEGES
TRIGGERS TRIGGERS
tables_priv tables_priv
time_zone time_zone
time_zone_leap_second time_zone_leap_second
time_zone_name time_zone_name
time_zone_transition time_zone_transition
time_zone_transition_type time_zone_transition_type
t1 t1
t4 t4
t2 t2
t3 t3
t5 t5
select c,table_name from v1
left join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";
c table_name
TABLES TABLES
TABLE_CONSTRAINTS TABLE_CONSTRAINTS
TABLE_PRIVILEGES TABLE_PRIVILEGES
TRIGGERS TRIGGERS
tables_priv tables_priv
time_zone time_zone
time_zone_leap_second time_zone_leap_second
time_zone_name time_zone_name
time_zone_transition time_zone_transition
time_zone_transition_type time_zone_transition_type
t1 t1
t4 t4
t2 t2
t3 t3
t5 t5
select c, v2.table_name from v1
right join information_schema.TABLES v2 on (v1.c=v2.table_name)
where v1.c like "t%";
c table_name
TABLES TABLES
TABLE_CONSTRAINTS TABLE_CONSTRAINTS
TABLE_PRIVILEGES TABLE_PRIVILEGES
TRIGGERS TRIGGERS
tables_priv tables_priv
time_zone time_zone
time_zone_leap_second time_zone_leap_second
time_zone_name time_zone_name
time_zone_transition time_zone_transition
time_zone_transition_type time_zone_transition_type
t1 t1
t4 t4
t2 t2
t3 t3
t5 t5
select table_name from information_schema.TABLES
where table_schema = "mysqltest" and table_name like "t%";
table_name
t1
t4
select * from information_schema.STATISTICS where TABLE_SCHEMA = "mysqltest";
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME NON_UNIQUE INDEX_SCHEMA INDEX_NAME SEQ_IN_INDEX COLUMN_NAME COLLATION CARDINALITY SUB_PART PACKED NULLABLE INDEX_TYPE COMMENT
NULL mysqltest t1 1 mysqltest string_data 1 b A NULL NULL NULL YES BTREE
show keys from t3 where Key_name = "a_data";
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
t3 1 a_data 1 a A NULL NULL NULL YES BTREE
show tables like 't%';
Tables_in_test (t%)
t2
t3
t5
show table status;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t2 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
t3 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
t5 MyISAM 10 Fixed 1 7 7 # 2048 0 11 # # NULL latin1_swedish_ci NULL
v1 NULL NULL NULL NULL NULL NULL # NULL NULL NULL # # NULL NULL NULL NULL VIEW
show full columns from t3 like "a%";
Field Type Collation Null Key Default Extra Privileges Comment
a int(11) NULL YES MUL NULL select,insert,update,references
show full columns from mysql.db like "Insert%";
Field Type Collation Null Key Default Extra Privileges Comment
Insert_priv enum('N','Y') utf8_general_ci NO N select,insert,update,references
show full columns from v1;
Field Type Collation Null Key Default Extra Privileges Comment
c varchar(64) utf8_general_ci NO select,insert,update,references
select * from information_schema.COLUMNS where table_name="t1"
and column_name= "a";
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION COLUMN_DEFAULT IS_NULLABLE DATA_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE CHARACTER_SET_NAME COLLATION_NAME COLUMN_TYPE COLUMN_KEY EXTRA PRIVILEGES COLUMN_COMMENT
NULL mysqltest t1 a 1 NULL YES int NULL NULL 10 0 NULL NULL int(11) select,insert,update,references
show columns from mysqltest.t1 where field like "%a%";
Field Type Null Key Default Extra
a int(11) YES NULL
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;
select table_name, column_name, privileges from information_schema.columns
where table_schema = 'mysqltest' and table_name = 't1';
table_name column_name privileges
t1 a select
show columns from mysqltest.t1;
Field Type Null Key Default Extra
a int(11) YES NULL
b varchar(30) YES MUL NULL
select table_name, column_name, privileges from information_schema.columns
where table_schema = 'mysqltest' and table_name = 'v1';
table_name column_name privileges
v1 c select
drop view v1, mysqltest.v1;
drop tables mysqltest.t4, mysqltest.t1, t2, t3, t5;
drop database mysqltest;
select * from information_schema.CHARACTER_SETS
where CHARACTER_SET_NAME like 'latin1%';
CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
latin1 latin1_swedish_ci cp1252 West European 1
SHOW CHARACTER SET LIKE 'latin1%';
Charset Description Default collation Maxlen
latin1 cp1252 West European latin1_swedish_ci 1
SHOW CHARACTER SET WHERE charset like 'latin1%';
Charset Description Default collation Maxlen
latin1 cp1252 West European latin1_swedish_ci 1
select * from information_schema.COLLATIONS
where COLLATION_NAME like 'latin1%';
COLLATION_NAME CHARACTER_SET_NAME ID IS_DEFAULT IS_COMPILED SORTLEN
latin1_german1_ci latin1 5 0
latin1_swedish_ci latin1 8 Yes Yes 1
latin1_danish_ci latin1 15 0
latin1_german2_ci latin1 31 Yes 2
latin1_bin latin1 47 Yes 1
latin1_general_ci latin1 48 0
latin1_general_cs latin1 49 0
latin1_spanish_ci latin1 94 0
SHOW COLLATION LIKE 'latin1%';
Collation Charset Id Default Compiled Sortlen
latin1_german1_ci latin1 5 0
latin1_swedish_ci latin1 8 Yes Yes 1
latin1_danish_ci latin1 15 0
latin1_german2_ci latin1 31 Yes 2
latin1_bin latin1 47 Yes 1
latin1_general_ci latin1 48 0
latin1_general_cs latin1 49 0
latin1_spanish_ci latin1 94 0
SHOW COLLATION WHERE collation like 'latin1%';
Collation Charset Id Default Compiled Sortlen
latin1_german1_ci latin1 5 0
latin1_swedish_ci latin1 8 Yes Yes 1
latin1_danish_ci latin1 15 0
latin1_german2_ci latin1 31 Yes 2
latin1_bin latin1 47 Yes 1
latin1_general_ci latin1 48 0
latin1_general_cs latin1 49 0
latin1_spanish_ci latin1 94 0
select * from information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
where COLLATION_NAME like 'latin1%';
COLLATION_NAME CHARACTER_SET_NAME
latin1_german1_ci latin1
latin1_swedish_ci latin1
latin1_danish_ci latin1
latin1_german2_ci latin1
latin1_bin latin1
latin1_general_ci latin1
latin1_general_cs latin1
latin1_spanish_ci latin1
drop procedure if exists sel2;
drop function if exists sub1;
drop function if exists sub2;
create function sub1(i int) returns int
return i+1;
create procedure sel2()
begin
select * from t1;
select * from t2;
end|
select parameter_style, sql_data_access, dtd_identifier
from information_schema.routines;
parameter_style sql_data_access dtd_identifier
SQL CONTAINS SQL NULL
SQL CONTAINS SQL int(11)
show procedure status;
Db Name Type Definer Modified Created Security_type Comment
test sel2 PROCEDURE root@localhost # # DEFINER
show function status;
Db Name Type Definer Modified Created Security_type Comment
test sub1 FUNCTION root@localhost # # DEFINER
select a.ROUTINE_NAME from information_schema.ROUTINES a,
information_schema.SCHEMATA b where
a.ROUTINE_SCHEMA = b.SCHEMA_NAME;
ROUTINE_NAME
sel2
sub1
explain select a.ROUTINE_NAME from information_schema.ROUTINES a,
information_schema.SCHEMATA b where
a.ROUTINE_SCHEMA = b.SCHEMA_NAME;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE # ALL NULL NULL NULL NULL 2
1 SIMPLE # ALL NULL NULL NULL NULL 2 Using where
select a.ROUTINE_NAME, b.name from information_schema.ROUTINES a,
mysql.proc b where a.ROUTINE_NAME = convert(b.name using utf8) order by 1;
ROUTINE_NAME name
sel2 sel2
sub1 sub1
select count(*) from information_schema.ROUTINES;
count(*)
2
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
ROUTINE_NAME ROUTINE_DEFINITION
show create function sub1;
ERROR 42000: FUNCTION sub1 does not exist
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
ROUTINE_NAME ROUTINE_DEFINITION
sel2
sub1
grant all privileges on test.* to mysqltest_1@localhost;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
ROUTINE_NAME ROUTINE_DEFINITION
sel2
sub1
create function sub2(i int) returns int
return i+1;
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
ROUTINE_NAME ROUTINE_DEFINITION
sel2
sub1
sub2 return i+1
show create procedure sel2;
Procedure sql_mode Create Procedure
sel2
show create function sub1;
Function sql_mode Create Function
sub1
show create function sub2;
Function sql_mode Create Function
sub2 CREATE FUNCTION `sub2`(i int) RETURNS int(11)
return i+1
show function status like "sub2";
Db Name Type Definer Modified Created Security_type Comment
test sub2 FUNCTION mysqltest_1@localhost # # DEFINER
drop function sub2;
show create procedure sel2;
Procedure sql_mode Create Procedure
sel2 CREATE PROCEDURE `sel2`()
begin
select * from t1;
select * from t2;
end
create view v0 (c) as select schema_name from information_schema.schemata;
select * from v0;
c
information_schema
mysql
test
explain select * from v0;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY # ALL NULL NULL NULL NULL 2
create view v1 (c) as select table_name from information_schema.tables
where table_name="v1";
select * from v1;
c
v1
create view v2 (c) as select column_name from information_schema.columns
where table_name="v2";
select * from v2;
c
c
create view v3 (c) as select CHARACTER_SET_NAME from information_schema.character_sets
where CHARACTER_SET_NAME like "latin1%";
select * from v3;
c
latin1
create view v4 (c) as select COLLATION_NAME from information_schema.collations
where COLLATION_NAME like "latin1%";
select * from v4;
c
latin1_german1_ci
latin1_swedish_ci
latin1_danish_ci
latin1_german2_ci
latin1_bin
latin1_general_ci
latin1_general_cs
latin1_spanish_ci
show keys from v4;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
select * from information_schema.views where TABLE_NAME like "v%";
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE
NULL test v0 select sql_no_cache `schemata`.`SCHEMA_NAME` AS `c` from `information_schema`.`schemata` NONE NO root@localhost DEFINER
NULL test v1 select sql_no_cache `tables`.`TABLE_NAME` AS `c` from `information_schema`.`tables` where (`tables`.`TABLE_NAME` = _utf8'v1') NONE NO root@localhost DEFINER
NULL test v2 select sql_no_cache `columns`.`COLUMN_NAME` AS `c` from `information_schema`.`columns` where (`columns`.`TABLE_NAME` = _utf8'v2') NONE NO root@localhost DEFINER
NULL test v3 select sql_no_cache `character_sets`.`CHARACTER_SET_NAME` AS `c` from `information_schema`.`character_sets` where (`character_sets`.`CHARACTER_SET_NAME` like _utf8'latin1%') NONE NO root@localhost DEFINER
NULL test v4 select sql_no_cache `collations`.`COLLATION_NAME` AS `c` from `information_schema`.`collations` where (`collations`.`COLLATION_NAME` like _utf8'latin1%') NONE NO root@localhost DEFINER
drop view v0, v1, v2, v3, v4;
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%';
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
'mysqltest_1'@'localhost' NULL USAGE NO
select * from information_schema.SCHEMA_PRIVILEGES where grantee like '%mysqltest_1%';
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
'mysqltest_1'@'localhost' NULL test SELECT YES
'mysqltest_1'@'localhost' NULL test INSERT YES
'mysqltest_1'@'localhost' NULL test UPDATE YES
'mysqltest_1'@'localhost' NULL test DELETE YES
'mysqltest_1'@'localhost' NULL test CREATE YES
'mysqltest_1'@'localhost' NULL test DROP YES
'mysqltest_1'@'localhost' NULL test REFERENCES YES
'mysqltest_1'@'localhost' NULL test INDEX YES
'mysqltest_1'@'localhost' NULL test ALTER YES
'mysqltest_1'@'localhost' NULL test CREATE TEMPORARY TABLES YES
'mysqltest_1'@'localhost' NULL test LOCK TABLES YES
'mysqltest_1'@'localhost' NULL test EXECUTE YES
'mysqltest_1'@'localhost' NULL test CREATE VIEW YES
'mysqltest_1'@'localhost' NULL test SHOW VIEW YES
'mysqltest_1'@'localhost' NULL test CREATE ROUTINE YES
'mysqltest_1'@'localhost' NULL test ALTER ROUTINE YES
select * from information_schema.TABLE_PRIVILEGES where grantee like '%mysqltest_1%';
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
'mysqltest_1'@'localhost' NULL test t1 SELECT NO
'mysqltest_1'@'localhost' NULL test t1 INSERT NO
'mysqltest_1'@'localhost' NULL test t1 UPDATE NO
select * from information_schema.COLUMN_PRIVILEGES where grantee like '%mysqltest_1%';
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
'mysqltest_1'@'localhost' NULL test t1 a SELECT NO
'mysqltest_1'@'localhost' NULL test t1 a INSERT NO
'mysqltest_1'@'localhost' NULL test t1 a UPDATE NO
'mysqltest_1'@'localhost' NULL test t1 a REFERENCES NO
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;
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;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL default '0',
PRIMARY KEY (`a`),
UNIQUE KEY `constraint_1` (`a`),
UNIQUE KEY `key_1` (`a`),
UNIQUE KEY `key_2` (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from information_schema.TABLE_CONSTRAINTS where
TABLE_SCHEMA= "test";
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_SCHEMA TABLE_NAME CONSTRAINT_TYPE
NULL test PRIMARY test t1 PRIMARY KEY
NULL test constraint_1 test t1 UNIQUE
NULL test key_1 test t1 UNIQUE
NULL test key_2 test t1 UNIQUE
select * from information_schema.KEY_COLUMN_USAGE where
TABLE_SCHEMA= "test";
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME
NULL test PRIMARY NULL test t1 a 1 NULL NULL NULL NULL
NULL test constraint_1 NULL test t1 a 1 NULL NULL NULL NULL
NULL test key_1 NULL test t1 a 1 NULL NULL NULL NULL
NULL test key_2 NULL test t1 a 1 NULL NULL NULL NULL
select table_name from information_schema.TABLES where table_schema like "test%";
table_name
t1
select table_name,column_name from information_schema.COLUMNS where table_schema like "test%";
table_name column_name
t1 a
select ROUTINE_NAME from information_schema.ROUTINES;
ROUTINE_NAME
sel2
sub1
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;
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE
NULL test v1 select `test`.`t1`.`a` AS `c` from `test`.`t1` CASCADED YES root@localhost DEFINER
NULL test v2 select `test`.`t1`.`a` AS `c` from `test`.`t1` LOCAL YES root@localhost DEFINER
NULL test v3 select `test`.`t1`.`a` AS `c` from `test`.`t1` CASCADED YES root@localhost DEFINER
grant select (a) on test.t1 to joe@localhost with grant option;
select * from INFORMATION_SCHEMA.COLUMN_PRIVILEGES;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
'joe'@'localhost' NULL test t1 a SELECT YES
select * from INFORMATION_SCHEMA.TABLE_PRIVILEGES;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
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;
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';
AUTO_INCREMENT
4
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;
s1
0
10
drop table t1;
SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
Table Create Table
CHARACTER_SETS CREATE TEMPORARY TABLE `CHARACTER_SETS` (
`CHARACTER_SET_NAME` varchar(64) NOT NULL default '',
`DEFAULT_COLLATE_NAME` varchar(64) NOT NULL default '',
`DESCRIPTION` varchar(60) NOT NULL default '',
`MAXLEN` bigint(3) NOT NULL default '0'
) ENGINE=MEMORY DEFAULT CHARSET=utf8
set names latin2;
SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
Table Create Table
CHARACTER_SETS CREATE TEMPORARY TABLE `CHARACTER_SETS` (
`CHARACTER_SET_NAME` varchar(64) NOT NULL default '',
`DEFAULT_COLLATE_NAME` varchar(64) NOT NULL default '',
`DESCRIPTION` varchar(60) NOT NULL default '',
`MAXLEN` bigint(3) NOT NULL default '0'
) ENGINE=MEMORY DEFAULT CHARSET=utf8
set names latin1;
create table t1 select * from information_schema.CHARACTER_SETS
where CHARACTER_SET_NAME like "latin1";
select * from t1;
CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
latin1 latin1_swedish_ci cp1252 West European 1
alter table t1 default character set utf8;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`CHARACTER_SET_NAME` varchar(64) NOT NULL default '',
`DEFAULT_COLLATE_NAME` varchar(64) NOT NULL default '',
`DESCRIPTION` varchar(60) NOT NULL default '',
`MAXLEN` bigint(3) NOT NULL default '0'
) ENGINE=MyISAM DEFAULT CHARSET=utf8
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';
COLUMN_NAME COLUMN_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE
a decimal(5,3) NULL NULL 5 3
b decimal(5,1) NULL NULL 5 1
c float(5,2) NULL NULL 5 2
d decimal(6,4) NULL NULL 6 4
e float NULL NULL 12 NULL
f decimal(6,3) NULL NULL 6 3
g int(11) NULL NULL 10 0
h double(10,3) NULL NULL 10 3
i double NULL NULL 22 NULL
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;
table_name column_name column_type
proc db char(64)
proc name char(64)
proc type enum('FUNCTION','PROCEDURE')
proc specific_name char(64)
proc language enum('SQL')
proc sql_data_access enum('CONTAINS_SQL','NO_SQL','READS_SQL_DATA','MODIFIES_SQL_DATA')
proc is_deterministic enum('YES','NO')
proc security_type enum('INVOKER','DEFINER')
proc param_list blob
proc returns char(64)
proc body longblob
proc definer char(77)
proc created timestamp
proc modified timestamp
proc sql_mode set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES','IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION','NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB','NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40','ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES','STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES','ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER','HIGH_NOT_PRECEDENCE')
proc comment char(64)
drop table t115;
create procedure p108 () begin declare c cursor for select data_type
from information_schema.columns; open c; open c; end;//
call p108()//
ERROR 24000: Cursor is already open
drop procedure p108;
create view v1 as select A1.table_name from information_schema.TABLES A1
where table_name= "user";
select * from v1;
table_name
user
drop view v1;
create view vo as select 'a' union select 'a';
show index from vo;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
select * from information_schema.TABLE_CONSTRAINTS where
TABLE_NAME= "vo";
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_SCHEMA TABLE_NAME CONSTRAINT_TYPE
select * from information_schema.KEY_COLUMN_USAGE where
TABLE_NAME= "vo";
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME
drop view vo;
select TABLE_NAME,TABLE_TYPE,ENGINE
from information_schema.tables
where table_schema='information_schema' limit 2;
TABLE_NAME TABLE_TYPE ENGINE
CHARACTER_SETS SYSTEM VIEW MEMORY
COLLATIONS SYSTEM VIEW MEMORY
show tables from information_schema like "T%";
Tables_in_information_schema (T%)
TABLES
TABLE_CONSTRAINTS
TABLE_PRIVILEGES
TRIGGERS
create database information_schema;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
use information_schema;
show full tables like "T%";
Tables_in_information_schema (T%) Table_type
TABLES SYSTEM VIEW
TABLE_CONSTRAINTS SYSTEM VIEW
TABLE_PRIVILEGES SYSTEM VIEW
TRIGGERS SYSTEM VIEW
create table t1(a int);
ERROR 42S02: Unknown table 't1' in information_schema
use test;
show tables;
Tables_in_test
use information_schema;
show tables like "T%";
Tables_in_information_schema (T%)
TABLES
TABLE_CONSTRAINTS
TABLE_PRIVILEGES
TRIGGERS
select table_name from tables where table_name='user';
table_name
user
select column_name, privileges from columns
where table_name='user' and column_name like '%o%';
column_name privileges
Host select,insert,update,references
Password select,insert,update,references
Drop_priv select,insert,update,references
Reload_priv select,insert,update,references
Shutdown_priv select,insert,update,references
Process_priv select,insert,update,references
Show_db_priv select,insert,update,references
Lock_tables_priv select,insert,update,references
Show_view_priv select,insert,update,references
Create_routine_priv select,insert,update,references
Alter_routine_priv select,insert,update,references
max_questions select,insert,update,references
max_connections select,insert,update,references
max_user_connections select,insert,update,references
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';
table_name
Warnings:
Warning 1356 View 'test.v2' references invalid table(s) or column(s) or function(s)
Warning 1356 View 'test.v3' references invalid table(s) or column(s) or function(s)
select table_name from information_schema.views
where table_schema='test';
table_name
Warnings:
Warning 1356 View 'test.v2' references invalid table(s) or column(s) or function(s)
Warning 1356 View 'test.v3' references invalid table(s) or column(s) or function(s)
select column_name from information_schema.columns
where table_schema='test';
column_name
f1
Warnings:
Warning 1356 View 'test.v2' references invalid table(s) or column(s) or function(s)
Warning 1356 View 'test.v3' references invalid table(s) or column(s) or function(s)
select index_name from information_schema.statistics where table_schema='test';
index_name
f1_key
select constraint_name from information_schema.table_constraints
where table_schema='test';
constraint_name
drop view v2;
drop view v3;
drop table t4;
select * from information_schema.table_names;
ERROR 42S02: Unknown table 'table_names' in information_schema
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");
column_type
varchar(64)
varchar(64)
select TABLE_ROWS from information_schema.tables where
table_schema="information_schema" and table_name="COLUMNS";
TABLE_ROWS
NULL
select table_type from information_schema.tables
where table_schema="mysql" and table_name="user";
table_type
BASE TABLE
show open tables where `table` like "user";
Database Table In_use Name_locked
mysql user 0 0
show status where variable_name like "%database%";
Variable_name Value
Com_show_databases 3
show variables where variable_name like "skip_show_databas";
Variable_name Value
show global status like "Threads_running";
Variable_name Value
Threads_running #
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;
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;
count(*)
101
drop view a2, a1;
drop table t_crashme;
select table_schema,table_name, column_name from
information_schema.columns
where data_type = 'longtext';
table_schema table_name column_name
information_schema COLUMNS COLUMN_TYPE
information_schema ROUTINES ROUTINE_DEFINITION
information_schema ROUTINES SQL_MODE
information_schema TRIGGERS ACTION_CONDITION
information_schema TRIGGERS ACTION_STATEMENT
information_schema TRIGGERS SQL_MODE
information_schema VIEWS VIEW_DEFINITION
select table_name, column_name, data_type from information_schema.columns
where data_type = 'datetime';
table_name column_name data_type
ROUTINES CREATED datetime
ROUTINES LAST_ALTERED datetime
TABLES CREATE_TIME datetime
TABLES UPDATE_TIME datetime
TABLES CHECK_TIME datetime
TRIGGERS CREATED datetime
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);
COUNT(*)
0
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';
COLUMN_NAME CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH
x_bigint NULL NULL
x_integer NULL NULL
x_smallint NULL NULL
x_decimal NULL NULL
x_numeric NULL NULL
x_real NULL NULL
x_float NULL NULL
x_double_precision NULL NULL
drop table t1;
grant select on test.* to mysqltest_4@localhost;
SELECT TABLE_NAME, COLUMN_NAME, PRIVILEGES FROM INFORMATION_SCHEMA.COLUMNS
where COLUMN_NAME='TABLE_NAME';
TABLE_NAME COLUMN_NAME PRIVILEGES
COLUMNS TABLE_NAME select
COLUMN_PRIVILEGES TABLE_NAME select
KEY_COLUMN_USAGE TABLE_NAME select
STATISTICS TABLE_NAME select
TABLES TABLE_NAME select
TABLE_CONSTRAINTS TABLE_NAME select
TABLE_PRIVILEGES TABLE_NAME select
VIEWS TABLE_NAME select
delete from mysql.user where user='mysqltest_4';
delete from mysql.db where user='mysqltest_4';
flush privileges;
SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
table_schema count(*)
information_schema 16
mysql 17
create table t1 (i int, j int);
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|
show triggers;
Trigger Event Table Statement Timing Created sql_mode
trg1 INSERT t1
begin
if new.j > 10 then
set new.j := 10;
end if;
end BEFORE NULL
trg2 UPDATE t1
begin
if old.i % 2 = 0 then
set new.j := -1;
end if;
end BEFORE NULL
trg3 UPDATE t1
begin
if new.j = -1 then
set @fired:= "Yes";
end if;
end AFTER NULL
select * from information_schema.triggers;
TRIGGER_CATALOG TRIGGER_SCHEMA TRIGGER_NAME EVENT_MANIPULATION EVENT_OBJECT_CATALOG EVENT_OBJECT_SCHEMA EVENT_OBJECT_TABLE ACTION_ORDER ACTION_CONDITION ACTION_STATEMENT ACTION_ORIENTATION ACTION_TIMING ACTION_REFERENCE_OLD_TABLE ACTION_REFERENCE_NEW_TABLE ACTION_REFERENCE_OLD_ROW ACTION_REFERENCE_NEW_ROW CREATED SQL_MODE
NULL test trg1 INSERT NULL test t1 0 NULL
begin
if new.j > 10 then
set new.j := 10;
end if;
end ROW BEFORE NULL NULL OLD NEW NULL
NULL test trg2 UPDATE NULL test t1 0 NULL
begin
if old.i % 2 = 0 then
set new.j := -1;
end if;
end ROW BEFORE NULL NULL OLD NEW NULL
NULL test trg3 UPDATE NULL test t1 0 NULL
begin
if new.j = -1 then
set @fired:= "Yes";
end if;
end ROW AFTER NULL NULL OLD NEW NULL
drop trigger trg1;
drop trigger trg2;
drop trigger trg3;
drop table t1;
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;
select * from information_schema.column_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
'user1'@'localhost' NULL mysqltest t1 f1 SELECT NO
select * from information_schema.table_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
select * from information_schema.schema_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
select * from information_schema.user_privileges;
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
'user1'@'localhost' NULL USAGE NO
show grants;
Grants for user1@localhost
GRANT USAGE ON *.* TO 'user1'@'localhost'
GRANT SELECT (f1) ON `mysqltest`.`t1` TO 'user1'@'localhost'
select * from information_schema.column_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
select * from information_schema.table_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
'user2'@'localhost' NULL mysqltest t2 SELECT NO
select * from information_schema.schema_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
select * from information_schema.user_privileges;
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
'user2'@'localhost' NULL USAGE NO
show grants;
Grants for user2@localhost
GRANT USAGE ON *.* TO 'user2'@'localhost'
GRANT SELECT ON `mysqltest`.`t2` TO 'user2'@'localhost'
select * from information_schema.column_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
select * from information_schema.table_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
select * from information_schema.schema_privileges;
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
'user3'@'localhost' NULL mysqltest SELECT NO
select * from information_schema.user_privileges;
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
'user3'@'localhost' NULL USAGE NO
show grants;
Grants for user3@localhost
GRANT USAGE ON *.* TO 'user3'@'localhost'
GRANT SELECT ON `mysqltest`.* TO 'user3'@'localhost'
select * from information_schema.column_privileges where grantee like '%user%';
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
'user1'@'localhost' NULL mysqltest t1 f1 SELECT NO
select * from information_schema.table_privileges where grantee like '%user%';
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
'user2'@'localhost' NULL mysqltest t2 SELECT NO
select * from information_schema.schema_privileges where grantee like '%user%';
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
'user3'@'localhost' NULL mysqltest SELECT NO
select * from information_schema.user_privileges where grantee like '%user%';
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
'user1'@'localhost' NULL USAGE NO
'user2'@'localhost' NULL USAGE NO
'user3'@'localhost' NULL USAGE NO
'user4'@'localhost' NULL SELECT NO
show grants;
Grants for user4@localhost
GRANT SELECT ON *.* TO 'user4'@'localhost'
drop user user1@localhost, user2@localhost, user3@localhost, user4@localhost;
use test;
drop database mysqltest;
drop procedure if exists p1;
drop procedure if exists p2;
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%';
sql_data_access
MODIFIES SQL DATA
CONTAINS SQL
drop procedure p1;
drop procedure p2;
show create database information_schema;
Database Create Database
information_schema CREATE DATABASE `information_schema` /*!40100 DEFAULT CHARACTER SET utf8 */
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';
column_name data_type CHARACTER_OCTET_LENGTH CHARACTER_MAXIMUM_LENGTH
f1 longblob 4294967295 4294967295
f2 longtext 4294967295 4294967295
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';
column_name NUMERIC_PRECISION NUMERIC_SCALE
f1 3 0
f2 5 0
f3 7 0
f4 10 0
f5 19 0
f6 1 NULL
f7 64 NULL
drop table t1;
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';
trigger_schema trigger_name
test tr1
use test;
drop table t1;
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';
column_name column_default
a NULL
b NULL
use test;
show columns from t1;
Field Type Null Key Default Extra
a int(11) NO
b int(11) YES NULL
drop table t1;
CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int);
SHOW TABLE STATUS FROM test
WHERE name IN ( SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA='test' AND TABLE_TYPE='BASE TABLE');
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
t2 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
DROP TABLE t1,t2;
create table t1(f1 int);
create view v1 (c) as select f1 from t1;
select database();
database()
NULL
show fields from test.v1;
Field Type Null Key Default Extra
c int(11) YES NULL
drop view v1;
drop table t1;
alter database information_schema;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
drop database information_schema;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
drop table information_schema.tables;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
alter table information_schema.tables;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
use information_schema;
create temporary table schemata(f1 char(10));
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
CREATE PROCEDURE p1 ()
BEGIN
SELECT 'foo' FROM DUAL;
END |
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
select ROUTINE_NAME from routines;
ROUTINE_NAME
grant all on information_schema.* to 'user1'@'localhost';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
grant select on information_schema.* to 'user1'@'localhost';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
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