mariadb/mysql-test/r/information_schema_all_engines.result

use INFORMATION_SCHEMA;
show tables;
Tables_in_information_schema
CHARACTER_SETS
COLLATIONS
COLLATION_CHARACTER_SET_APPLICABILITY
COLUMNS
COLUMN_PRIVILEGES
ENGINES
EVENTS
FILES
GLOBAL_STATUS
GLOBAL_VARIABLES
KEY_COLUMN_USAGE
PARTITIONS
PLUGINS
PROCESSLIST
PROFILING
REFERENTIAL_CONSTRAINTS
ROUTINES
SCHEMATA
SCHEMA_PRIVILEGES
SESSION_STATUS
SESSION_VARIABLES
STATISTICS
TABLES
TABLE_CONSTRAINTS
TABLE_PRIVILEGES
TRIGGERS
USER_PRIVILEGES
VIEWS
INNODB_BUFFER_POOL_PAGES
PBXT_STATISTICS
INNODB_CMP
INNODB_RSEG
XTRADB_ENHANCEMENTS
INNODB_BUFFER_POOL_PAGES_INDEX
INNODB_BUFFER_POOL_PAGES_BLOB
INNODB_TRX
INNODB_CMP_RESET
INNODB_LOCK_WAITS
INNODB_CMPMEM_RESET
INNODB_LOCKS
INNODB_CMPMEM
SELECT t.table_name, c1.column_name
FROM information_schema.tables t
INNER JOIN
information_schema.columns c1
ON t.table_schema = c1.table_schema AND
t.table_name = c1.table_name
WHERE t.table_schema = 'information_schema' AND
c1.ordinal_position =
( SELECT COALESCE(MIN(c2.ordinal_position),1)
FROM information_schema.columns c2
WHERE c2.table_schema = t.table_schema AND
c2.table_name = t.table_name AND
c2.column_name LIKE '%SCHEMA%'
        );
table_name	column_name
CHARACTER_SETS	CHARACTER_SET_NAME
COLLATIONS	COLLATION_NAME
COLLATION_CHARACTER_SET_APPLICABILITY	COLLATION_NAME
COLUMNS	TABLE_SCHEMA
COLUMN_PRIVILEGES	TABLE_SCHEMA
ENGINES	ENGINE
EVENTS	EVENT_SCHEMA
FILES	TABLE_SCHEMA
GLOBAL_STATUS	VARIABLE_NAME
GLOBAL_VARIABLES	VARIABLE_NAME
KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
PARTITIONS	TABLE_SCHEMA
PLUGINS	PLUGIN_NAME
PROCESSLIST	ID
PROFILING	QUERY_ID
REFERENTIAL_CONSTRAINTS	CONSTRAINT_SCHEMA
ROUTINES	ROUTINE_SCHEMA
SCHEMATA	SCHEMA_NAME
SCHEMA_PRIVILEGES	TABLE_SCHEMA
SESSION_STATUS	VARIABLE_NAME
SESSION_VARIABLES	VARIABLE_NAME
STATISTICS	TABLE_SCHEMA
TABLES	TABLE_SCHEMA
TABLE_CONSTRAINTS	CONSTRAINT_SCHEMA
TABLE_PRIVILEGES	TABLE_SCHEMA
TRIGGERS	TRIGGER_SCHEMA
USER_PRIVILEGES	GRANTEE
VIEWS	TABLE_SCHEMA
INNODB_BUFFER_POOL_PAGES	page_type
PBXT_STATISTICS	ID
INNODB_CMP	page_size
INNODB_RSEG	rseg_id
XTRADB_ENHANCEMENTS	name
INNODB_BUFFER_POOL_PAGES_INDEX	schema_name
INNODB_BUFFER_POOL_PAGES_BLOB	space_id
INNODB_TRX	trx_id
INNODB_CMP_RESET	page_size
INNODB_LOCK_WAITS	requesting_trx_id
INNODB_CMPMEM_RESET	page_size
INNODB_LOCKS	lock_id
INNODB_CMPMEM	page_size
SELECT t.table_name, c1.column_name
FROM information_schema.tables t
INNER JOIN
information_schema.columns c1
ON t.table_schema = c1.table_schema AND
t.table_name = c1.table_name
WHERE t.table_schema = 'information_schema' AND
c1.ordinal_position =
( SELECT COALESCE(MIN(c2.ordinal_position),1)
FROM information_schema.columns c2
WHERE c2.table_schema = 'information_schema' AND
c2.table_name = t.table_name AND
c2.column_name LIKE '%SCHEMA%'
        );
table_name	column_name
CHARACTER_SETS	CHARACTER_SET_NAME
COLLATIONS	COLLATION_NAME
COLLATION_CHARACTER_SET_APPLICABILITY	COLLATION_NAME
COLUMNS	TABLE_SCHEMA
COLUMN_PRIVILEGES	TABLE_SCHEMA
ENGINES	ENGINE
EVENTS	EVENT_SCHEMA
FILES	TABLE_SCHEMA
GLOBAL_STATUS	VARIABLE_NAME
GLOBAL_VARIABLES	VARIABLE_NAME
KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
PARTITIONS	TABLE_SCHEMA
PLUGINS	PLUGIN_NAME
PROCESSLIST	ID
PROFILING	QUERY_ID
REFERENTIAL_CONSTRAINTS	CONSTRAINT_SCHEMA
ROUTINES	ROUTINE_SCHEMA
SCHEMATA	SCHEMA_NAME
SCHEMA_PRIVILEGES	TABLE_SCHEMA
SESSION_STATUS	VARIABLE_NAME
SESSION_VARIABLES	VARIABLE_NAME
STATISTICS	TABLE_SCHEMA
TABLES	TABLE_SCHEMA
TABLE_CONSTRAINTS	CONSTRAINT_SCHEMA
TABLE_PRIVILEGES	TABLE_SCHEMA
TRIGGERS	TRIGGER_SCHEMA
USER_PRIVILEGES	GRANTEE
VIEWS	TABLE_SCHEMA
INNODB_BUFFER_POOL_PAGES	page_type
PBXT_STATISTICS	ID
INNODB_CMP	page_size
INNODB_RSEG	rseg_id
XTRADB_ENHANCEMENTS	name
INNODB_BUFFER_POOL_PAGES_INDEX	schema_name
INNODB_BUFFER_POOL_PAGES_BLOB	space_id
INNODB_TRX	trx_id
INNODB_CMP_RESET	page_size
INNODB_LOCK_WAITS	requesting_trx_id
INNODB_CMPMEM_RESET	page_size
INNODB_LOCKS	lock_id
INNODB_CMPMEM	page_size
select 1 as f1 from information_schema.tables  where "CHARACTER_SETS"=
(select cast(table_name as char)  from information_schema.tables
order by table_name limit 1) limit 1;
f1
1
select t.table_name, group_concat(t.table_schema, '.', t.table_name),
count(*) as num1
from information_schema.tables t
inner join information_schema.columns c1
on t.table_schema = c1.table_schema AND t.table_name = c1.table_name
where t.table_schema = 'information_schema' and
c1.ordinal_position =
(select isnull(c2.column_type) -
isnull(group_concat(c2.table_schema, '.', c2.table_name)) +
count(*) as num
from information_schema.columns c2 where
c2.table_schema='information_schema' and
(c2.column_type = 'varchar(7)' or c2.column_type = 'varchar(20)')
group by c2.column_type order by num limit 1)
group by t.table_name order by num1, t.table_name;
table_name	group_concat(t.table_schema, '.', t.table_name)	num1
CHARACTER_SETS	information_schema.CHARACTER_SETS	1
COLLATIONS	information_schema.COLLATIONS	1
COLLATION_CHARACTER_SET_APPLICABILITY	information_schema.COLLATION_CHARACTER_SET_APPLICABILITY	1
COLUMNS	information_schema.COLUMNS	1
COLUMN_PRIVILEGES	information_schema.COLUMN_PRIVILEGES	1
ENGINES	information_schema.ENGINES	1
EVENTS	information_schema.EVENTS	1
FILES	information_schema.FILES	1
GLOBAL_STATUS	information_schema.GLOBAL_STATUS	1
GLOBAL_VARIABLES	information_schema.GLOBAL_VARIABLES	1
INNODB_BUFFER_POOL_PAGES	information_schema.INNODB_BUFFER_POOL_PAGES	1
INNODB_BUFFER_POOL_PAGES_BLOB	information_schema.INNODB_BUFFER_POOL_PAGES_BLOB	1
INNODB_BUFFER_POOL_PAGES_INDEX	information_schema.INNODB_BUFFER_POOL_PAGES_INDEX	1
INNODB_CMP	information_schema.INNODB_CMP	1
INNODB_CMPMEM	information_schema.INNODB_CMPMEM	1
INNODB_CMPMEM_RESET	information_schema.INNODB_CMPMEM_RESET	1
INNODB_CMP_RESET	information_schema.INNODB_CMP_RESET	1
INNODB_LOCKS	information_schema.INNODB_LOCKS	1
INNODB_LOCK_WAITS	information_schema.INNODB_LOCK_WAITS	1
INNODB_RSEG	information_schema.INNODB_RSEG	1
INNODB_TRX	information_schema.INNODB_TRX	1
KEY_COLUMN_USAGE	information_schema.KEY_COLUMN_USAGE	1
PARTITIONS	information_schema.PARTITIONS	1
PBXT_STATISTICS	information_schema.PBXT_STATISTICS	1
PLUGINS	information_schema.PLUGINS	1
PROCESSLIST	information_schema.PROCESSLIST	1
PROFILING	information_schema.PROFILING	1
REFERENTIAL_CONSTRAINTS	information_schema.REFERENTIAL_CONSTRAINTS	1
ROUTINES	information_schema.ROUTINES	1
SCHEMATA	information_schema.SCHEMATA	1
SCHEMA_PRIVILEGES	information_schema.SCHEMA_PRIVILEGES	1
SESSION_STATUS	information_schema.SESSION_STATUS	1
SESSION_VARIABLES	information_schema.SESSION_VARIABLES	1
STATISTICS	information_schema.STATISTICS	1
TABLES	information_schema.TABLES	1
TABLE_CONSTRAINTS	information_schema.TABLE_CONSTRAINTS	1
TABLE_PRIVILEGES	information_schema.TABLE_PRIVILEGES	1
TRIGGERS	information_schema.TRIGGERS	1
USER_PRIVILEGES	information_schema.USER_PRIVILEGES	1
VIEWS	information_schema.VIEWS	1
XTRADB_ENHANCEMENTS	information_schema.XTRADB_ENHANCEMENTS	1
Database: information_schema
+---------------------------------------+
|                Tables                 |
+---------------------------------------+
| CHARACTER_SETS                        |
| COLLATIONS                            |
| COLLATION_CHARACTER_SET_APPLICABILITY |
| COLUMNS                               |
| COLUMN_PRIVILEGES                     |
| ENGINES                               |
| EVENTS                                |
| FILES                                 |
| GLOBAL_STATUS                         |
| GLOBAL_VARIABLES                      |
| KEY_COLUMN_USAGE                      |
| PARTITIONS                            |
| PLUGINS                               |
| PROCESSLIST                           |
| PROFILING                             |
| REFERENTIAL_CONSTRAINTS               |
| ROUTINES                              |
| SCHEMATA                              |
| SCHEMA_PRIVILEGES                     |
| SESSION_STATUS                        |
| SESSION_VARIABLES                     |
| STATISTICS                            |
| TABLES                                |
| TABLE_CONSTRAINTS                     |
| TABLE_PRIVILEGES                      |
| TRIGGERS                              |
| USER_PRIVILEGES                       |
| VIEWS                                 |
| INNODB_BUFFER_POOL_PAGES              |
| PBXT_STATISTICS                       |
| INNODB_CMP                            |
| INNODB_RSEG                           |
| XTRADB_ENHANCEMENTS                   |
| INNODB_BUFFER_POOL_PAGES_INDEX        |
| INNODB_BUFFER_POOL_PAGES_BLOB         |
| INNODB_TRX                            |
| INNODB_CMP_RESET                      |
| INNODB_LOCK_WAITS                     |
| INNODB_CMPMEM_RESET                   |
| INNODB_LOCKS                          |
| INNODB_CMPMEM                         |
+---------------------------------------+
Database: INFORMATION_SCHEMA
+---------------------------------------+
|                Tables                 |
+---------------------------------------+
| CHARACTER_SETS                        |
| COLLATIONS                            |
| COLLATION_CHARACTER_SET_APPLICABILITY |
| COLUMNS                               |
| COLUMN_PRIVILEGES                     |
| ENGINES                               |
| EVENTS                                |
| FILES                                 |
| GLOBAL_STATUS                         |
| GLOBAL_VARIABLES                      |
| KEY_COLUMN_USAGE                      |
| PARTITIONS                            |
| PLUGINS                               |
| PROCESSLIST                           |
| PROFILING                             |
| REFERENTIAL_CONSTRAINTS               |
| ROUTINES                              |
| SCHEMATA                              |
| SCHEMA_PRIVILEGES                     |
| SESSION_STATUS                        |
| SESSION_VARIABLES                     |
| STATISTICS                            |
| TABLES                                |
| TABLE_CONSTRAINTS                     |
| TABLE_PRIVILEGES                      |
| TRIGGERS                              |
| USER_PRIVILEGES                       |
| VIEWS                                 |
| INNODB_BUFFER_POOL_PAGES              |
| PBXT_STATISTICS                       |
| INNODB_CMP                            |
| INNODB_RSEG                           |
| XTRADB_ENHANCEMENTS                   |
| INNODB_BUFFER_POOL_PAGES_INDEX        |
| INNODB_BUFFER_POOL_PAGES_BLOB         |
| INNODB_TRX                            |
| INNODB_CMP_RESET                      |
| INNODB_LOCK_WAITS                     |
| INNODB_CMPMEM_RESET                   |
| INNODB_LOCKS                          |
| INNODB_CMPMEM                         |
+---------------------------------------+
Wildcard: inf_rmation_schema
+--------------------+
|     Databases      |
+--------------------+
| information_schema |
+--------------------+
SELECT table_schema, count(*) FROM information_schema.TABLES WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') AND table_name<>'ndb_binlog_index' AND table_name<>'ndb_apply_status' GROUP BY TABLE_SCHEMA;
table_schema	count(*)
information_schema	41
mysql	22