mirror of
https://github.com/MariaDB/server.git
synced 2025-11-08 00:28:29 +03:00
35cebfdc51
One change is that if the port is not supplied or out of bound, the old behaviour is to print 3306. The new behaviour is to not print it (if not supplied) or the out of bound value.
282 lines
13 KiB
Plaintext
282 lines
13 KiB
Plaintext
show databases;
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Database
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information_schema
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mtr
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mysql
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performance_schema
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sys
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test
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select count(*) from performance_schema.performance_timers;
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count(*)
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5
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select count(*) from performance_schema.setup_consumers;
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count(*)
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15
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select count(*) > 4 from performance_schema.setup_instruments;
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count(*) > 4
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1
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select count(*) from performance_schema.setup_timers;
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count(*)
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5
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Warnings:
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Warning 1287 'performance_schema.setup_timers' is deprecated and will be removed in a future release
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select * from performance_schema.accounts;
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select * from performance_schema.cond_instances;
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select * from performance_schema.events_stages_current;
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select * from performance_schema.events_stages_history;
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select * from performance_schema.events_stages_history_long;
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select * from performance_schema.events_stages_summary_by_account_by_event_name;
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select * from performance_schema.events_stages_summary_by_host_by_event_name;
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select * from performance_schema.events_stages_summary_by_thread_by_event_name;
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select * from performance_schema.events_stages_summary_by_user_by_event_name;
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select * from performance_schema.events_stages_summary_global_by_event_name;
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select * from performance_schema.events_statements_current;
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select * from performance_schema.events_statements_history;
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select * from performance_schema.events_statements_history_long;
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select * from performance_schema.events_statements_summary_by_account_by_event_name;
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select * from performance_schema.events_statements_summary_by_digest;
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select * from performance_schema.events_statements_summary_by_host_by_event_name;
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select * from performance_schema.events_statements_summary_by_thread_by_event_name;
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select * from performance_schema.events_statements_summary_by_user_by_event_name;
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select * from performance_schema.events_statements_summary_global_by_event_name;
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select * from performance_schema.events_transactions_current;
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select * from performance_schema.events_transactions_history;
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select * from performance_schema.events_transactions_history_long;
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select * from performance_schema.events_transactions_summary_by_account_by_event_name;
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select * from performance_schema.events_transactions_summary_by_host_by_event_name;
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select * from performance_schema.events_transactions_summary_by_thread_by_event_name;
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select * from performance_schema.events_transactions_summary_by_user_by_event_name;
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select * from performance_schema.events_transactions_summary_global_by_event_name;
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select * from performance_schema.events_waits_current;
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select * from performance_schema.events_waits_history;
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select * from performance_schema.events_waits_history_long;
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select * from performance_schema.events_waits_summary_by_account_by_event_name;
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select * from performance_schema.events_waits_summary_by_host_by_event_name;
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select * from performance_schema.events_waits_summary_by_instance;
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select * from performance_schema.events_waits_summary_by_thread_by_event_name;
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select * from performance_schema.events_waits_summary_by_user_by_event_name;
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select * from performance_schema.events_waits_summary_global_by_event_name;
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select * from performance_schema.memory_summary_by_account_by_event_name;
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select * from performance_schema.memory_summary_by_host_by_event_name;
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select * from performance_schema.memory_summary_by_thread_by_event_name;
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select * from performance_schema.memory_summary_by_user_by_event_name;
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select * from performance_schema.memory_summary_global_by_event_name;
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select * from performance_schema.file_instances;
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select * from performance_schema.file_summary_by_event_name;
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select * from performance_schema.file_summary_by_instance;
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select * from performance_schema.host_cache;
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select * from performance_schema.hosts;
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select * from performance_schema.memory_summary_by_account_by_event_name;
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select * from performance_schema.memory_summary_by_host_by_event_name;
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select * from performance_schema.memory_summary_by_thread_by_event_name;
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select * from performance_schema.memory_summary_by_user_by_event_name;
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select * from performance_schema.memory_summary_global_by_event_name;
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select * from performance_schema.metadata_locks;
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select * from performance_schema.mutex_instances;
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select * from performance_schema.objects_summary_global_by_type;
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select * from performance_schema.performance_timers;
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select * from performance_schema.rwlock_instances;
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select * from performance_schema.session_account_connect_attrs;
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select * from performance_schema.session_connect_attrs;
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select * from performance_schema.setup_actors;
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select * from performance_schema.setup_consumers;
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select * from performance_schema.setup_instruments;
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select * from performance_schema.setup_objects;
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select * from performance_schema.setup_timers;
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select * from performance_schema.socket_instances;
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select * from performance_schema.socket_summary_by_instance;
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select * from performance_schema.socket_summary_by_event_name;
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select * from performance_schema.table_handles;
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select * from performance_schema.table_io_waits_summary_by_index_usage;
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select * from performance_schema.table_io_waits_summary_by_table;
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select * from performance_schema.table_lock_waits_summary_by_table;
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select * from performance_schema.threads;
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select * from performance_schema.users;
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select * from performance_schema.replication_connection_configuration;
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select * from performance_schema.replication_applier_configuration;
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select * from performance_schema.replication_applier_status;
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select * from performance_schema.replication_applier_status_by_coordinator;
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select * from performance_schema.global_status;
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select * from performance_schema.status_by_thread;
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select * from performance_schema.status_by_user;
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select * from performance_schema.status_by_host;
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select * from performance_schema.status_by_account;
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select * from performance_schema.session_status;
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show global variables like "performance_schema%";
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Variable_name Value
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performance_schema ON
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performance_schema_accounts_size 100
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performance_schema_digests_size 200
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performance_schema_events_stages_history_long_size 1000
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performance_schema_events_stages_history_size 10
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performance_schema_events_statements_history_long_size 1000
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performance_schema_events_statements_history_size 10
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performance_schema_events_transactions_history_long_size 1000
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performance_schema_events_transactions_history_size 10
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performance_schema_events_waits_history_long_size 10000
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performance_schema_events_waits_history_size 10
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performance_schema_hosts_size 100
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performance_schema_max_cond_classes 90
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performance_schema_max_cond_instances 1500
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performance_schema_max_digest_length 1024
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performance_schema_max_file_classes 80
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performance_schema_max_file_handles 32768
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performance_schema_max_file_instances 10000
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performance_schema_max_index_stat 34
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performance_schema_max_memory_classes 320
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performance_schema_max_metadata_locks 10000
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performance_schema_max_mutex_classes 210
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performance_schema_max_mutex_instances 5000
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performance_schema_max_prepared_statements_instances 100
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performance_schema_max_program_instances 5000
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performance_schema_max_rwlock_classes 50
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performance_schema_max_rwlock_instances 5000
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performance_schema_max_socket_classes 10
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performance_schema_max_socket_instances 1000
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performance_schema_max_sql_text_length 1024
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performance_schema_max_stage_classes 160
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performance_schema_max_statement_classes 223
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performance_schema_max_statement_stack 10
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performance_schema_max_table_handles 1000
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performance_schema_max_table_instances 500
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performance_schema_max_table_lock_stat 500
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performance_schema_max_thread_classes 50
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performance_schema_max_thread_instances 400
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performance_schema_session_connect_attrs_size 2048
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performance_schema_setup_actors_size 100
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performance_schema_setup_objects_size 100
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performance_schema_users_size 100
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show engine PERFORMANCE_SCHEMA status;
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show global status like "performance_schema%";
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drop table if exists db1.t1;
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drop database if exists db1;
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create database db1;
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create table db1.t1 (a int, b char(10) default 'default',
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unique key uidx(a));
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insert into db1.t1 values('1', 'abc');
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insert into db1.t1 values('2', 'abc');
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select * from db1.t1 where a='1';
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a b
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1 abc
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
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from performance_schema.table_io_waits_summary_by_table
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME
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3 TABLE db1 t1
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
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from performance_schema.table_io_waits_summary_by_index_usage
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME INDEX_NAME
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2 TABLE db1 t1 NULL
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1 TABLE db1 t1 uidx
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flush tables;
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
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from performance_schema.table_io_waits_summary_by_table
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME
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1 TABLE db1 t1
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
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from performance_schema.table_io_waits_summary_by_index_usage
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME INDEX_NAME
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1 TABLE db1 t1 uidx
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select variable_value > 0 from information_schema.global_status
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where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
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variable_value > 0
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1
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FLUSH GLOBAL STATUS;
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select variable_value from information_schema.global_status
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where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
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variable_value
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0
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create table db1.t2 (a int, b char(10) default 'default',
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unique key uidx(a));
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insert into db1.t1 values('3', 'abc');
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insert into db1.t1 values('4', 'abc');
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select * from db1.t1 where a='1';
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a b
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1 abc
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insert into db1.t2 values('1', 'abc');
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insert into db1.t2 values('2', 'abc');
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select * from db1.t2 where a='1';
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a b
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1 abc
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
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from performance_schema.table_io_waits_summary_by_table
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME
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4 TABLE db1 t1
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3 TABLE db1 t2
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
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from performance_schema.table_io_waits_summary_by_index_usage
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME INDEX_NAME
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2 TABLE db1 t1 NULL
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2 TABLE db1 t1 uidx
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2 TABLE db1 t2 NULL
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1 TABLE db1 t2 (index 0)
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flush tables;
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
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from performance_schema.table_io_waits_summary_by_table
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME
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2 TABLE db1 t1
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0 TABLE db1 t2
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
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from performance_schema.table_io_waits_summary_by_index_usage
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME INDEX_NAME
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2 TABLE db1 t1 uidx
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select variable_value > 0 from information_schema.global_status
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where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
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variable_value > 0
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1
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FLUSH GLOBAL STATUS;
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update performance_schema.setup_objects set ENABLED='NO' where OBJECT_TYPE='TABLE';
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insert into db1.t1 values('5', 'abc');
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insert into db1.t1 values('6', 'abc');
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select * from db1.t1 where a='1';
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a b
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1 abc
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insert into db1.t2 values('3', 'abc');
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insert into db1.t2 values('4', 'abc');
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select * from db1.t2 where a='1';
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a b
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1 abc
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
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from performance_schema.table_io_waits_summary_by_table
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
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from performance_schema.table_io_waits_summary_by_index_usage
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME INDEX_NAME
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flush tables;
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
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from performance_schema.table_io_waits_summary_by_table
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME
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select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
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from performance_schema.table_io_waits_summary_by_index_usage
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where OBJECT_SCHEMA='db1'
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order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;
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COUNT_STAR OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME INDEX_NAME
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select variable_value from information_schema.global_status
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where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
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variable_value
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0
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drop database db1;
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update performance_schema.setup_objects set ENABLED='YES'
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where OBJECT_TYPE='TABLE' and OBJECT_SCHEMA="%";
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