（DBA之路【四】）mysql show 指令集合
1）show authors\G;
顾名思义显示开发者的各种信息。
2）SHOW BINARY/MASTER LOGS
显示server上的二进制日志文件
3）SHOW BINLOG EVENTS [IN 'log_name'] [FROM pos] [LIMIT [offset,] row_count]
显示二进制文件的相关信息。如果未指定日志文件名，则默认展示第一个二进制文件相关信息；其中LIMIT语法同SELECT.
4）SHOW CHARACTER SET [LIKE 'pattern' | WHERE expr]
show character set显示MYSQL中的所有字符集信息。可用LIKE或WHERE子句进行过滤。如 show character set like ‘u%’,列出所有以u开头的字符集.
5）SHOW COLLATION [LIKE 'pattern' | WHERE expr]
show collation 显示所有的排序规则。可用LIKE或WHERE子句进行过滤。如 show collation like ‘u%’,列出所有以u开头的排序规则.
6）SHOW [FULL] COLUMNS {FROM | IN} tbl_name [{FROM | IN} db_name]
[LIKE 'pattern' | WHERE expr]
e.g:mysql> SHOW columns FROM luna IN test;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(11) | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
显示某个数据库的某张表的列的信息，可通过like或where子句过虑。from tbl_naem in db_name可用db_name.tbl_name替代。
7）SHOW CONTRIBUTORS
8）SHOW CREATE {DATABASE | SCHEMA} db_name
显示指定数据库的create database语句；其中database==schema.
e.g:
mysql> show create database test;
+----------+-----------------------------------------------------------------+
| Database | Create Database |
+----------+-----------------------------------------------------------------+
| test | CREATE DATABASE `test` /*!40100 DEFAULT CHARACTER SET latin1 */ |
+----------+-----------------------------------------------------------------+
9）SHOW CREATE EVENT event_name
显示指定event的create event语句.
10）SHOW CREATE FUNCTION func_name
显示指定func_name的create function语句
e.g:
mysql> show create function f1;
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| Function | sql_mode | Create Function | character_set_client | collation_connection | Database Collation |
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| f1 | | CREATE DEFINER=`root`@`localhost` FUNCTION `f1`(s CHAR(20)) RETURNS char(50) CHARSET latin1
BEGIN
RETURN CONCAT('aloha',s,'!');
END | utf8 | utf8_general_ci | latin1_swedish_ci |
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
1 row in set (0.20 sec)
11）SHOW CREATE PROCEDURE proc_name
显示指定proc_name的create procedure语句
e.g:
mysql> show create function f1;
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| Function | sql_mode | Create Function | character_set_client | collation_connection | Database Collation |
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| f1 | | CREATE DEFINER=`root`@`localhost` FUNCTION `f1`(s CHAR(20)) RETURNS char(50) CHARSET latin1
BEGIN
RETURN CONCAT('aloha',s,'!');
END | utf8 | utf8_general_ci | latin1_swedish_ci |
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
1 row in set (0.20 sec)
12）SHOW CREATE TABLE tbl_name
显示指定tal_name的create table语句.
e.g:
mysql> show create function f1;
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| Function | sql_mode | Create Function | character_set_client | collation_connection | Database Collation |
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| f1 | | CREATE DEFINER=`root`@`localhost` FUNCTION `f1`(s CHAR(20)) RETURNS char(50) CHARSET latin1
BEGIN
RETURN CONCAT('aloha',s,'!');
END | utf8 | utf8_general_ci | latin1_swedish_ci |
+----------+----------+-------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
1 row in set (0.20 sec)
13）SHOW CREATE TRIGGER trigger_name
显示指定trigger_name的create trigger语句.
14）SHOW CREATE VIEW view_name
显示指定view_name的create view语句.
15）SHOW {DATABASES | SCHEMAS} [LIKE 'pattern' | WHERE expr]
show databases显示server上所有的数据库信息，可用like或where子句过虑；其中databases==schmas.
16）SHOW ENGINE engine_name {STATUS | MUTEX}
显示相关存储引擎的一些操作信息.
17）SHOW ERRORS [LIMIT [offset,] row_count]
SHOW COUNT(*) ERRORS
显示错误信息
统计错误信息数量
18）SHOW EVENTS [{FROM | IN} schema_name][LIKE 'pattern' | WHERE expr]
列出schema_name模式下，所有满足like或where条件的事件；Show events；列出当前模式下的所有事件.
19）SHOW FUNCTION CODE func_name
显示存储函数func_name的code
e.g:
mysql> SHOW FUNCTION CODE f1;
ERROR 1289 (HY000): The 'SHOW PROCEDURE|FUNCTION CODE' feature is disabled; you need MySQL built with '--with-debug' to have it working
solution:貌似没法，因为原来没有加debug设置，sigh~
20）SHOW FUNCTION STATUS [LIKE 'pattern' | WHERE expr]
显示（满足like或where条件的）存储函数的状态信息
mysql> SHOW FUNCTION STATUS ;
+------+------+----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
| Db | Name | Type | Definer | Modified | Created | Security_type | Comment | character_set_client | collation_connection | Database Collation |
+------+------+----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
| test | f1 | FUNCTION | root@localhost | 2015-05-04 21:55:23 | 2015-05-04 21:55:23 | DEFINER | | utf8 | utf8_general_ci | latin1_swedish_ci |
+------+------+----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
1 row in set (0.00 sec)
21）SHOW GRANTS [FOR user]
显示权限
mysql> show grants for root@'localhost';
+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost |
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD '*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9' WITH GRANT OPTION |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION |
+----------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.01 sec)
22）SHOW {INDEX | INDEXES | KEYS}{FROM | IN} tbl_name [{FROM | IN} db_name][WHERE expr]
mysql> SHOW KEYS FROM dept IN test;
+-------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+-------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| dept | 0 | PRIMARY | 1 | id | A | 4 | NULL | NULL | | BTREE | | |
+-------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
23）show engine innodb status
24）SHOW MASTER STATUS
显示主机（相对于slave）的bin-log
25）SHOW OPEN TABLES [{FROM | IN} db_name][LIKE 'pattern' | WHERE expr]
显示在表缓存中打开的，非临时表的信息
mysql> SHOW OPEN TABLES FROM test;
+----------+-----------+--------+-------------+
| Database | Table | In_use | Name_locked |
+----------+-----------+--------+-------------+
| test | temper | 0 | 0 |
| test | orderitem | 0 | 0 |
| test | person | 0 | 0 |
| test | shirt | 0 | 0 |
| test | user | 0 | 0 |
| test | luna | 0 | 0 |
| test | dept | 0 | 0 |
| test | orders | 0 | 0 |
+----------+-----------+--------+-------------+
8 rows in set (0.00 sec)
26）SHOW PLUGINS
显示server插件信息
mysql> SHOW PLUGINS;
+--------------------------+----------+--------------------+---------+---------+
| Name | Status | Type | Library | License |
+--------------------------+----------+--------------------+---------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| mysql_native_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| mysql_old_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| FEDERATED | DISABLED | STORAGE ENGINE | NULL | GPL |
| InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCKS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCK_WAITS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE_LRU | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_POOL_STATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| PERFORMANCE_SCHEMA | ACTIVE | STORAGE ENGINE | NULL | GPL |
| partition | ACTIVE | STORAGE ENGINE | NULL | GPL |
+--------------------------+----------+--------------------+---------+---------+
23 rows in set (0.00 sec)
27）SHOW PRIVILEGES
显示MYSQL SERVER支持的所有系统权限
mysql> SHOW PRIVILEGES;
+-------------------------+---------------------------------------+-------------------------------------------------------+
| Privilege | Context | Comment |
+-------------------------+---------------------------------------+-------------------------------------------------------+
| Alter | Tables | To alter the table |
| Alter routine | Functions,Procedures | To alter or drop stored functions/procedures |
| Create | Databases,Tables,Indexes | To create new databases and tables |
| Create routine | Databases | To use CREATE FUNCTION/PROCEDURE |
| Create temporary tables | Databases | To use CREATE TEMPORARY TABLE |
| Create view | Tables | To create new views |
| Create user | Server Admin | To create new users |
| Delete | Tables | To delete existing rows |
| Drop | Databases,Tables | To drop databases, tables, and views |
| Event | Server Admin | To create, alter, drop and execute events |
| Execute | Functions,Procedures | To execute stored routines |
| File | File access on server | To read and write files on the server |
| Grant option | Databases,Tables,Functions,Procedures | To give to other users those privileges you possess |
| Index | Tables | To create or drop indexes |
| Insert | Tables | To insert data into tables |
| Lock tables | Databases | To use LOCK TABLES (together with SELECT privilege) |
| Process | Server Admin | To view the plain text of currently executing queries |
| Proxy | Server Admin | To make proxy user possible |
| References | Databases,Tables | To have references on tables |
| Reload | Server Admin | To reload or refresh tables, logs and privileges |
| Replication client | Server Admin | To ask where the slave or master servers are |
| Replication slave | Server Admin | To read binary log events from the master |
| Select | Tables | To retrieve rows from table |
| Show databases | Server Admin | To see all databases with SHOW DATABASES |
| Show view | Tables | To see views with SHOW CREATE VIEW |
| Shutdown | Server Admin | To shut down the server |
| Super | Server Admin | To use KILL thread, SET GLOBAL, CHANGE MASTER, etc. |
| Trigger | Tables | To use triggers |
| Create tablespace | Server Admin | To create/alter/drop tablespaces |
| Update | Tables | To update existing rows |
| Usage | Server Admin | No privileges - allow connect only |
+-------------------------+---------------------------------------+-------------------------------------------------------+
31 rows in set (0.00 sec)
28）SHOW PROCEDURE CODE proc_name
该语句仅能在支持debugging扩展的server上执行。它展示的是一个内部实现的命名存储过程。
29）SHOW PROCEDURE STATUS [LIKE 'pattern' | WHERE expr]
这个也是mysql的一个扩展功能，它展示的是一个存储过程的特有属性，如名字、类型、创建者、修改日期等等
mysql> SHOW PROCEDURE STATUS;
+------+------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
| Db | Name | Type | Definer | Modified | Created | Security_type | Comment | character_set_client | collation_connection | Database Collation |
+------+------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
| test | p1 | PROCEDURE | root@localhost | 2015-05-04 21:07:06 | 2015-05-04 21:07:06 | DEFINER | | utf8 | utf8_general_ci | latin1_swedish_ci |
| test | p2 | PROCEDURE | root@localhost | 2015-05-04 22:26:48 | 2015-05-04 22:26:48 | DEFINER | | utf8 | utf8_general_ci | latin1_swedish_ci |
| test | p3 | PROCEDURE | root@localhost | 2015-05-05 08:52:48 | 2015-05-05 08:52:48 | DEFINER | | utf8 | utf8_general_ci | latin1_swedish_ci |
| test | p4 | PROCEDURE | root@localhost | 2015-05-05 09:02:18 | 2015-05-05 09:02:18 | DEFINER | | utf8 | utf8_general_ci | latin1_swedish_ci |
| test | p5 | PROCEDURE | root@localhost | 2015-05-05 09:21:28 | 2015-05-05 09:21:28 | DEFINER | | utf8 | utf8_general_ci | latin1_swedish_ci |
+------+------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
5 rows in set (0.00 sec)
30）SHOW [FULL] PROCESSLIST
展示sever上正在跑着的线程（这个很重要！）
mysql> SHOW PROCESSLIST;
+----+------+-----------+------+---------+------+-------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+------+-----------+------+---------+------+-------+------------------+
| 38 | root | localhost | test | Query | 1 | NULL | SHOW PROCESSLIST |
+----+------+-----------+------+---------+------+-------+------------------+
1 row in set (0.04 sec)
31）SHOW PROFILE [type [, type] ... ]
[FOR QUERY n]
[LIMIT row_count [OFFSET offset]]
type:
ALL
| BLOCK IO
| CONTEXT SWITCHES
| CPU
| IPC
| MEMORY
| PAGE FAULTS
| SOURCE
| SWAPS
显示会话中语句执行时的资源分配概要
32）SHOW SCHEDULER STATUS
相关事件调度的调试信息。适用于5.1.11调试版，在5.1.12及以后的版本不再支持该语句。
33）SHOW SLAVE HOSTS
展示在master上登记过的slave机器的相关信息
34）SHOW SLAVE STATUS
显示slave线程基本参数的状态信息
35）SHOW [GLOBAL | SESSION] STATUS [LIKE 'pattern' | WHERE expr]
显示server的相关状态信息
mysql> SHOW GLOBAL STATUS;
+------------------------------------------+-------------+
| Variable_name | Value |
+------------------------------------------+-------------+
| Aborted_clients | 0 |
| Aborted_connects | 1 |
| Binlog_cache_disk_use | 0 |
| Binlog_cache_use | 0 |
| Binlog_stmt_cache_disk_use | 0 |
| Binlog_stmt_cache_use | 0 |
| Bytes_received | 8766 |
| Bytes_sent | 33028 |
| Com_admin_commands | 1 |
| Com_assign_to_keycache | 0 |
| Com_alter_db | 0 |
| Com_alter_db_upgrade | 0 |
| Com_alter_event | 0 |
| Com_alter_function | 0 |
| Com_alter_procedure | 0 |
| Com_alter_server | 0 |
| Com_alter_table | 0 |
| Com_alter_tablespace | 0 |
| Com_analyze | 0 |
| Com_begin | 0 |
| Com_binlog | 0 |
| Com_call_procedure | 0 |
| Com_change_db | 1 |
| Com_change_master | 0 |
| Com_check | 0 |
| Com_checksum | 0 |
| Com_commit | 0 |
| Com_create_db | 0 |
| Com_create_event | 0 |
| Com_create_function | 0 |
| Com_create_index | 0 |
| Com_create_procedure | 0 |
| Com_create_server | 0 |
| Com_create_table | 0 |
| Com_create_trigger | 0 |
| Com_create_udf | 0 |
| Com_create_user | 0 |
| Com_create_view | 0 |
| Com_dealloc_sql | 0 |
| Com_delete | 0 |
| Com_delete_multi | 0 |
| Com_do | 0 |
| Com_drop_db | 0 |
| Com_drop_event | 0 |
| Com_drop_function | 0 |
| Com_drop_index | 0 |
| Com_drop_procedure | 0 |
| Com_drop_server | 0 |
| Com_drop_table | 0 |
| Com_drop_trigger | 0 |
| Com_drop_user | 0 |
| Com_drop_view | 0 |
| Com_empty_query | 0 |
| Com_execute_sql | 0 |
| Com_flush | 0 |
| Com_grant | 0 |
| Com_ha_close | 0 |
| Com_ha_open | 0 |
| Com_ha_read | 0 |
| Com_help | 1 |
| Com_insert | 0 |
| Com_insert_select | 0 |
| Com_install_plugin | 0 |
| Com_kill | 0 |
| Com_load | 0 |
| Com_lock_tables | 0 |
| Com_optimize | 0 |
| Com_preload_keys | 0 |
| Com_prepare_sql | 0 |
| Com_purge | 0 |
| Com_purge_before_date | 0 |
| Com_release_savepoint | 0 |
| Com_rename_table | 0 |
| Com_rename_user | 0 |
| Com_repair | 0 |
| Com_replace | 0 |
| Com_replace_select | 0 |
| Com_reset | 0 |
| Com_resignal | 0 |
| Com_revoke | 0 |
| Com_revoke_all | 0 |
| Com_rollback | 0 |
| Com_rollback_to_savepoint | 0 |
| Com_savepoint | 0 |
| Com_select | 70 |
| Com_set_option | 0 |
| Com_signal | 0 |
| Com_show_authors | 0 |
| Com_show_binlog_events | 0 |
| Com_show_binlogs | 0 |
| Com_show_charsets | 0 |
| Com_show_collations | 0 |
| Com_show_contributors | 0 |
| Com_show_create_db | 0 |
| Com_show_create_event | 0 |
| Com_show_create_func | 0 |
| Com_show_create_proc | 0 |
| Com_show_create_table | 0 |
| Com_show_create_trigger | 0 |
| Com_show_databases | 2 |
| Com_show_engine_logs | 0 |
| Com_show_engine_mutex | 0 |
| Com_show_engine_status | 1 |
| Com_show_events | 0 |
| Com_show_errors | 0 |
| Com_show_fields | 16 |
| Com_show_function_status | 2 |
| Com_show_grants | 3 |
| Com_show_keys | 2 |
| Com_show_master_status | 1 |
| Com_show_open_tables | 1 |
| Com_show_plugins | 1 |
| Com_show_privileges | 1 |
| Com_show_procedure_status | 1 |
| Com_show_processlist | 1 |
| Com_show_profile | 1 |
| Com_show_profiles | 0 |
| Com_show_relaylog_events | 0 |
| Com_show_slave_hosts | 1 |
| Com_show_slave_status | 0 |
| Com_show_status | 1 |
| Com_show_storage_engines | 0 |
| Com_show_table_status | 0 |
| Com_show_tables | 2 |
| Com_show_triggers | 0 |
| Com_show_variables | 2 |
| Com_show_warnings | 0 |
| Com_slave_start | 0 |
| Com_slave_stop | 0 |
| Com_stmt_close | 0 |
| Com_stmt_execute | 0 |
| Com_stmt_fetch | 0 |
| Com_stmt_prepare | 0 |
| Com_stmt_reprepare | 0 |
| Com_stmt_reset | 0 |
| Com_stmt_send_long_data | 0 |
| Com_truncate | 0 |
| Com_uninstall_plugin | 0 |
| Com_unlock_tables | 0 |
| Com_update | 0 |
| Com_update_multi | 0 |
| Com_xa_commit | 0 |
| Com_xa_end | 0 |
| Com_xa_prepare | 0 |
| Com_xa_recover | 0 |
| Com_xa_rollback | 0 |
| Com_xa_start | 0 |
| Compression | OFF |
| Connections | 39 |
| Created_tmp_disk_tables | 58 |
| Created_tmp_files | 6 |
| Created_tmp_tables | 225 |
| Delayed_errors | 0 |
| Delayed_insert_threads | 0 |
| Delayed_writes | 0 |
| Flush_commands | 1 |
| Handler_commit | 0 |
| Handler_delete | 0 |
| Handler_discover | 0 |
| Handler_prepare | 0 |
| Handler_read_first | 7 |
| Handler_read_key | 1 |
| Handler_read_last | 0 |
| Handler_read_next | 24 |
| Handler_read_prev | 0 |
| Handler_read_rnd | 0 |
| Handler_read_rnd_next | 1181 |
| Handler_rollback | 0 |
| Handler_savepoint | 0 |
| Handler_savepoint_rollback | 0 |
| Handler_update | 0 |
| Handler_write | 1133 |
| Innodb_buffer_pool_pages_data | 328 |
| Innodb_buffer_pool_bytes_data | 5373952 |
| Innodb_buffer_pool_pages_dirty | 0 |
| Innodb_buffer_pool_bytes_dirty | 0 |
| Innodb_buffer_pool_pages_flushed | 0 |
| Innodb_buffer_pool_pages_free | 7864 |
| Innodb_buffer_pool_pages_misc | 0 |
| Innodb_buffer_pool_pages_total | 8192 |
| Innodb_buffer_pool_read_ahead_rnd | 0 |
| Innodb_buffer_pool_read_ahead | 0 |
| Innodb_buffer_pool_read_ahead_evicted | 0 |
| Innodb_buffer_pool_read_requests | 3557 |
| Innodb_buffer_pool_reads | 329 |
| Innodb_buffer_pool_wait_free | 0 |
| Innodb_buffer_pool_write_requests | 0 |
| Innodb_data_fsyncs | 3 |
| Innodb_data_pending_fsyncs | 0 |
| Innodb_data_pending_reads | 0 |
| Innodb_data_pending_writes | 0 |
| Innodb_data_read | 7573504 |
| Innodb_data_reads | 339 |
| Innodb_data_writes | 3 |
| Innodb_data_written | 1536 |
| Innodb_dblwr_pages_written | 0 |
| Innodb_dblwr_writes | 0 |
| Innodb_have_atomic_builtins | ON |
| Innodb_log_waits | 0 |
| Innodb_log_write_requests | 0 |
| Innodb_log_writes | 1 |
| Innodb_os_log_fsyncs | 3 |
| Innodb_os_log_pending_fsyncs | 0 |
| Innodb_os_log_pending_writes | 0 |
| Innodb_os_log_written | 512 |
| Innodb_page_size | 16384 |
| Innodb_pages_created | 0 |
| Innodb_pages_read | 328 |
| Innodb_pages_written | 0 |
| Innodb_row_lock_current_waits | 0 |
| Innodb_row_lock_time | 0 |
| Innodb_row_lock_time_avg | 0 |
| Innodb_row_lock_time_max | 0 |
| Innodb_row_lock_waits | 0 |
| Innodb_rows_deleted | 0 |
| Innodb_rows_inserted | 0 |
| Innodb_rows_read | 0 |
| Innodb_rows_updated | 0 |
| Innodb_truncated_status_writes | 0 |
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 14493 |
| Key_blocks_used | 4 |
| Key_read_requests | 18 |
| Key_reads | 4 |
| Key_write_requests | 0 |
| Key_writes | 0 |
| Last_query_cost | 0.000000 |
| Max_used_connections | 1 |
| Not_flushed_delayed_rows | 0 |
| Open_files | 48 |
| Open_streams | 0 |
| Open_table_definitions | 52 |
| Open_tables | 52 |
| Opened_files | 363 |
| Opened_table_definitions | 52 |
| Opened_tables | 215 |
| Performance_schema_cond_classes_lost | 0 |
| Performance_schema_cond_instances_lost | 0 |
| Performance_schema_file_classes_lost | 0 |
| Performance_schema_file_handles_lost | 0 |
| Performance_schema_file_instances_lost | 0 |
| Performance_schema_locker_lost | 0 |
| Performance_schema_mutex_classes_lost | 0 |
| Performance_schema_mutex_instances_lost | 0 |
| Performance_schema_rwlock_classes_lost | 0 |
| Performance_schema_rwlock_instances_lost | 0 |
| Performance_schema_table_handles_lost | 0 |
| Performance_schema_table_instances_lost | 0 |
| Performance_schema_thread_classes_lost | 0 |
| Performance_schema_thread_instances_lost | 0 |
| Prepared_stmt_count | 0 |
| Qcache_free_blocks | 1 |
| Qcache_free_memory | 16768392 |
| Qcache_hits | 0 |
| Qcache_inserts | 0 |
| Qcache_lowmem_prunes | 0 |
| Qcache_not_cached | 70 |
| Qcache_queries_in_cache | 0 |
| Qcache_total_blocks | 1 |
| Queries | 167 |
| Questions | 167 |
| Rpl_status | AUTH_MASTER |
| Select_full_join | 0 |
| Select_full_range_join | 0 |
| Select_range | 0 |
| Select_range_check | 0 |
| Select_scan | 24 |
| Slave_heartbeat_period | 0.000 |
| Slave_open_temp_tables | 0 |
| Slave_received_heartbeats | 0 |
| Slave_retried_transactions | 0 |
| Slave_running | OFF |
| Slow_launch_threads | 0 |
| Slow_queries | 0 |
| Sort_merge_passes | 0 |
| Sort_range | 0 |
| Sort_rows | 0 |
| Sort_scan | 0 |
| Ssl_accept_renegotiates | 0 |
| Ssl_accepts | 0 |
| Ssl_callback_cache_hits | 0 |
| Ssl_cipher | |
| Ssl_cipher_list | |
| Ssl_client_connects | 0 |
| Ssl_connect_renegotiates | 0 |
| Ssl_ctx_verify_depth | 0 |
| Ssl_ctx_verify_mode | 0 |
| Ssl_default_timeout | 0 |
| Ssl_finished_accepts | 0 |
| Ssl_finished_connects | 0 |
| Ssl_session_cache_hits | 0 |
| Ssl_session_cache_misses | 0 |
| Ssl_session_cache_mode | NONE |
| Ssl_session_cache_overflows | 0 |
| Ssl_session_cache_size | 0 |
| Ssl_session_cache_timeouts | 0 |
| Ssl_sessions_reused | 0 |
| Ssl_used_session_cache_entries | 0 |
| Ssl_verify_depth | 0 |
| Ssl_verify_mode | 0 |
| Ssl_version | |
| Table_locks_immediate | 68 |
| Table_locks_waited | 0 |
| Tc_log_max_pages_used | 0 |
| Tc_log_page_size | 0 |
| Tc_log_page_waits | 0 |
| Threads_cached | 0 |
| Threads_connected | 1 |
| Threads_created | 1 |
| Threads_running | 1 |
| Uptime | 3269 |
| Uptime_since_flush_status | 3269 |
+------------------------------------------+-------------+
312 rows in set (0.02 sec)
36）SHOW TABLE STATUS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr]
有点类似于show tables，但该语提供了更多的非临时表的相关信息。
mysql> 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 |
+-----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-------------------+----------+----------------+---------+
| dept | InnoDB | 10 | Compact | 4 | 4096 | 16384 | 0 | 0 | 7340032 | 5 | 2015-05-03 10:27:07 | NULL | NULL | latin1_swedish_ci | NULL | | |
| luna | InnoDB | 10 | Compact | 9 | 1820 | 16384 | 0 | 0 | 7340032 | NULL | 2015-06-02 17:18:23 | NULL | NULL | latin1_swedish_ci | NULL | | |
| orderitem | InnoDB | 10 | Compact | 1 | 16384 | 16384 | 0 | 16384 | 7340032 | 2 | 2015-05-26 18:07:48 | NULL | NULL | latin1_swedish_ci | NULL | | |
| orders | InnoDB | 10 | Compact | 3 | 5461 | 16384 | 0 | 0 | 7340032 | 4 | 2015-05-10 11:25:38 | NULL | NULL | latin1_swedish_ci | NULL | | |
| person | InnoDB | 10 | Compact | 2 | 8192 | 16384 | 0 | 0 | 7340032 | 3 | 2015-06-07 15:25:06 | NULL | NULL | latin1_swedish_ci | NULL | | |
| shirt | InnoDB | 10 | Compact | 7 | 2340 | 16384 | 0 | 0 | 7340032 | 8 | 2015-06-07 15:25:06 | NULL | NULL | latin1_swedish_ci | NULL | | |
| temper | InnoDB | 10 | Compact | 36 | 455 | 16384 | 0 | 0 | 7340032 | NULL | 2015-06-02 20:29:58 | NULL | NULL | latin1_swedish_ci | NULL | | |
| user | InnoDB | 10 | Compact | 10 | 1638 | 16384 | 0 | 32768 | 7340032 | 12 | 2015-05-04 19:04:09 | NULL | NULL | latin1_swedish_ci | NULL | | |
+-----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-------------------+----------+----------------+---------+
8 rows in set (0.05 sec)
37）SHOW TRIGGERS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr]
列出某数据库内定义的triggers.
38）SHOW [GLOBAL | SESSION] VARIABLES [LIKE 'pattern' | WHERE expr]
列出mysql的系统变量
请见DBA之路八
39）SHOW WARNINGS [LIMIT [offset,] row_count]
SHOW COUNT(*) WARNINGS
类似show errors；不过该语句显示的是当前会话中最后一个语句执行所产的的错误、警告等相关信息。