Mysql等待事件

--查看配置表如下：
mysql> SELECT table_name
         FROM information_schema.tables t
        WHERE t.table_schema='performance_schema'
          AND t.table_name LIKE 'setup%' ;
+-------------------+
| table_name        |
+-------------------+
| setup_actors      |       --配置监控的范围
| setup_consumers   |       --配置监控的类型
| setup_instruments |       --配置等待事件的类型
| setup_objects     |       --配置监控的对象
| setup_timers      |       --配置时间计量单位(皮秒)，8.0版本会被废除
+-------------------+
5 rows in set (0.00 sec)


--1、查看监控的范围，默认监控所有的host，所有的user
mysql> SELECT * FROM performance_schema.setup_actors;
+------+------+------+---------+---------+
| HOST | USER | ROLE | ENABLED | HISTORY |
+------+------+------+---------+---------+
| %    | %    | %    | YES     | YES     |
+------+------+------+---------+---------+
1 row in set (0.00 sec)

The setup_actors table has these columns:
    HOST：The host name. This should be a literal name, or '%' to mean “any host.”
    USER：The user name. This should be a literal name, or '%' to mean “any user.”
    ROLE：Unused.
    ENABLED：Whether to enable instrumentation for foreground threads matched by the row. The value is YES or NO.
    HISTORY：Whether to log historical events for foreground threads matched by the row. The value is YES or NO.




--2、查看当前监控的类型(写入到哪些监控的统计表里)和是否开启监控，默认开启如下
mysql> SELECT * FROM performance_schema.setup_consumers;
+----------------------------------+---------+
| NAME                             | ENABLED |
+----------------------------------+---------+
| events_stages_current            | NO      |
| events_stages_history            | NO      |
| events_stages_history_long       | NO      |
| events_statements_current        | YES     |
| events_statements_history        | YES     |
| events_statements_history_long   | NO      |
| events_transactions_current      | NO      |
| events_transactions_history      | NO      |
| events_transactions_history_long | NO      |
| events_waits_current             | NO      |
| events_waits_history             | NO      |
| events_waits_history_long        | NO      |
| global_instrumentation           | YES     |
| thread_instrumentation           | YES     |
| statements_digest                | YES     |
+----------------------------------+---------+
15 rows in set (0.00 sec)



--3、查看等待事件的类型和是否开启了这种类型的记录   
--1022种类型，这里按等待类型查看数量
mysql> SELECT SUBSTRING_INDEX(NAME, '/', 1),COUNT(1)  
    ->       FROM performance_schema.setup_instruments
    ->      GROUP BY 1  
    ->      ORDER BY 2 DESC;
+-------------------------------+----------+
| SUBSTRING_INDEX(NAME, '/', 1) | COUNT(1) |
+-------------------------------+----------+
| memory                        |      377 |
| wait                          |      321 |     --等待事件
| statement                     |      193 |     --语句执行的信息
| stage                         |      129 |     --语句执行阶段的时间统计
| idle                          |        1 |     --空闲
| transaction                   |        1 |
+-------------------------------+----------+
6 rows in set (0.00 sec)




--4、查看监控的对象， 默认对mysql、performance_schema、information_schema三个库的用户对象都不做监控
mysql> SELECT * FROM performance_schema.setup_objects;
+-------------+--------------------+-------------+---------+-------+
| OBJECT_TYPE | OBJECT_SCHEMA      | OBJECT_NAME | ENABLED | TIMED |
+-------------+--------------------+-------------+---------+-------+
| EVENT       | mysql              | %           | NO      | NO    |
| EVENT       | performance_schema | %           | NO      | NO    |
| EVENT       | information_schema | %           | NO      | NO    |
| EVENT       | %                  | %           | YES     | YES   |
| FUNCTION    | mysql              | %           | NO      | NO    |
| FUNCTION    | performance_schema | %           | NO      | NO    |
| FUNCTION    | information_schema | %           | NO      | NO    |
| FUNCTION    | %                  | %           | YES     | YES   |
| PROCEDURE   | mysql              | %           | NO      | NO    |
| PROCEDURE   | performance_schema | %           | NO      | NO    |
| PROCEDURE   | information_schema | %           | NO      | NO    |
| PROCEDURE   | %                  | %           | YES     | YES   |
| TABLE       | mysql              | %           | NO      | NO    |
| TABLE       | performance_schema | %           | NO      | NO    |
| TABLE       | information_schema | %           | NO      | NO    |
| TABLE       | %                  | %           | YES     | YES   |
| TRIGGER     | mysql              | %           | NO      | NO    |
| TRIGGER     | performance_schema | %           | NO      | NO    |
| TRIGGER     | information_schema | %           | NO      | NO    |
| TRIGGER     | %                  | %           | YES     | YES   |
+-------------+--------------------+-------------+---------+-------+
20 rows in set (0.00 sec)


--查看时间单位计量，都是皮秒(1秒＝1000000000000皮秒)，8.0版本废除的表
mysql> SELECT * FROM performance_schema.setup_timers;
+-------------+-------------+
| NAME        | TIMER_NAME  |
+-------------+-------------+
| idle        | MICROSECOND |
| wait        | CYCLE       |
| stage       | NANOSECOND  |
| statement   | NANOSECOND  |
| transaction | NANOSECOND  |
+-------------+-------------+
5 rows in set, 1 warning (0.00 sec)

 

记录执行语句的等待事件表 ， 官方文档：https://dev.mysql.com/doc/refman/5.7/en/performance-schema-statement-tables.html



--查看可记录执行语句的等待事件的表，如下：
mysql> SELECT table_name
       FROM information_schema.tables t
       WHERE t.table_schema='performance_schema'
       AND t.table_name LIKE 'events_statements%' ;
+----------------------------------------------------+
| table_name                                         |
+----------------------------------------------------+
| events_statements_current                          |
| events_statements_history                          |
| events_statements_history_long                     |
| events_statements_summary_by_account_by_event_name |
| events_statements_summary_by_digest                |   
| events_statements_summary_by_host_by_event_name    |
| events_statements_summary_by_program               |
| events_statements_summary_by_thread_by_event_name  |
| events_statements_summary_by_user_by_event_name    |
| events_statements_summary_global_by_event_name     |
+----------------------------------------------------+
10 rows in set (0.00 sec)



--查看是否开启了配置信息，写入到表中
mysql> SELECT *
       FROM performance_schema.setup_consumers
       WHERE NAME LIKE '%statements%';
+--------------------------------+---------+
| NAME                           | ENABLED |
+--------------------------------+---------+
| events_statements_current      | YES     |
| events_statements_history      | YES     |
| events_statements_history_long | NO      |
| statements_digest              | YES     |
+--------------------------------+---------+
4 rows in set (0.00 sec)


mysql> SELECT *
       FROM performance_schema.setup_instruments
       WHERE NAME LIKE 'statement/%';
+---------------------------------------+---------+-------+
| NAME                                  | ENABLED | TIMED |
+---------------------------------------+---------+-------+
| statement/sql/select                  | YES     | YES   |
| statement/sql/create_table            | YES     | YES   |
| .........                             |
| statement/abstract/new_packet         | YES     | YES   |
| statement/abstract/relay_log          | YES     | YES   |
+---------------------------------------+---------+-------+
193 rows in set (0.01 sec)


--可以在my.cnf配置，永久的开启配置信息来记录等待事件执行语句到表中
[mysqld]
performance-schema-instrument='statement/%=ON'
performance-schema-consumer-events-statements-current=ON
performance-schema-consumer-events-statements-history=ON
performance-schema-consumer-events-statements-history-long=ON
performance-schema-consumer-statements-digest=ON


--查看history历史表记录的数据量，history记录每个线程的最近10条，history_long记录所有线程的最近10000条
mysql> show variables like 'performance_schema_events_statements_history%';
+--------------------------------------------------------+-------+
| Variable_name                                          | Value |
+--------------------------------------------------------+-------+
| performance_schema_events_statements_history_long_size | 10000 |
| performance_schema_events_statements_history_size      | 10    |
+--------------------------------------------------------+-------+
2 rows in set (0.01 sec)




--查看历史执行时间最长的前5条sql记录，如下：
mysql> SELECT thread_id
              ,event_id
              ,event_name
              ,(timer_end-timer_start)/1000000000000 exec_time_sec
              ,lock_time/1000000000000 lock_time_sce
              ,SUBSTR(sql_text,1,50)
         FROM performance_schema.events_statements_history
        ORDER BY 4 DESC
        LIMIT 5;
+-----------+----------+---------------------------+---------------+---------------+----------------------------------------------------+
| thread_id | event_id | event_name                | exec_time_sec | lock_time_sce | SUBSTR(sql_text,1,50)                              |
+-----------+----------+---------------------------+---------------+---------------+----------------------------------------------------+
|        29 |    15305 | statement/sql/select      |        0.0041 |        0.0037 | EXPLAIN select thread_id,event_id ,                |
|        29 |    15237 | statement/sql/show_status |        0.0018 |        0.0001 | SHOW STATUS                                        |
|        29 |    15189 | statement/sql/show_status |        0.0016 |        0.0001 | SHOW STATUS                                        |
|        32 |      341 | statement/sql/select      |        0.0012 |        0.0001 | SELECT * FROM performance_schema.setup_inst        |
|        32 |      397 | statement/sql/select      |        0.0012 |        0.0002 | SELECT thread_id ,event_id ,event_na               |
+-----------+----------+---------------------------+---------------+---------------+----------------------------------------------------+
5 rows in set (0.00 sec)

 

记录执行语句的等待事件表 ， 官方文档：https://dev.mysql.com/doc/refman/5.7/en/performance-schema-stage-tables.html



--查看可记录语句每步执行时间的等待事件的表，如下：
mysql> SELECT table_name
       FROM information_schema.tables t
       WHERE t.table_schema='performance_schema'
       AND t.table_name LIKE 'events_stages%';
+------------------------------------------------+
| table_name                                     |
+------------------------------------------------+
| events_stages_current                          |
| events_stages_history                          |
| events_stages_history_long                     |
| events_stages_summary_by_account_by_event_name |
| events_stages_summary_by_host_by_event_name    |
| events_stages_summary_by_thread_by_event_name  |
| events_stages_summary_by_user_by_event_name    |
| events_stages_summary_global_by_event_name     |
+------------------------------------------------+
8 rows in set (0.00 sec)



--查看是否开启了配置信息，写入到表中
mysql> SELECT *
       FROM performance_schema.setup_consumers
       WHERE NAME LIKE '%stages%';
+----------------------------+---------+
| NAME                       | ENABLED |
+----------------------------+---------+
| events_stages_current      | NO      |
| events_stages_history      | NO      |
| events_stages_history_long | NO      |
+----------------------------+---------+
3 rows in set (0.00 sec)


mysql> SELECT *
       FROM performance_schema.setup_instruments
       WHERE NAME LIKE 'stage%';
+----------------------------------------------------------------------------+---------+-------+
| NAME                                                                       | ENABLED | TIMED |
+----------------------------------------------------------------------------+---------+-------+
| stage/sql/After create                                                     | NO      | NO    |
| stage/sql/allocating local table                                           | NO      | NO    |
| stage/sql/preparing for alter table                                        | NO      | NO    |
| stage/sql/altering table                                                   | NO      | NO    |
| stage/sql/committing alter table to storage engine                         | NO      | NO    |
| ......
| stage/innodb/buffer pool load                                              | YES     | YES   |
+----------------------------------------------------------------------------+---------+-------+
129 rows in set (0.00 sec)


--可以在my.cnf配置，永久的开启配置信息来记录等待事件执行语句到表中
[mysqld]
performance-schema-instrument='stage/%=ON'
performance-schema-consumer-events-stages-current=ON
performance-schema-consumer-events-stages-history=ON
performance-schema-consumer-events-stages-history-long=ON


--查看history历史表记录的数据量，history记录每个线程的最近10条，history_long记录所有线程的最近10000条
mysql> show variables like 'performance_schema_events_stages_history%';
+----------------------------------------------------+-------+
| Variable_name                                      | Value |
+----------------------------------------------------+-------+
| performance_schema_events_stages_history_long_size | 10000 |
| performance_schema_events_stages_history_size      | 10    |
+----------------------------------------------------+-------+
2 rows in set (0.00 sec)



--查看历史执行时间最长的前5条每步具体时间，如下：
mysql> SELECT thread_id
             ,event_id
             ,event_name
             ,(timer_end-timer_start)/1000000000000 exec_time_sec
             ,timer_wait/1000000000000 timer_wait_sce
        FROM performance_schema.events_stages_history
       ORDER BY 4 DESC
       LIMIT 5;
+-----------+----------+-------------------------------+---------------+----------------+
| thread_id | event_id | event_name                    | exec_time_sec | timer_wait_sce |
+-----------+----------+-------------------------------+---------------+----------------+
|        24 |        1 | stage/innodb/buffer pool load |        0.6036 |         0.6036 |
|         1 |      200 | stage/sql/System lock         |        0.0081 |         0.0081 |
|         1 |      205 | stage/sql/Opening tables      |        0.0029 |         0.0029 |
|         1 |      199 | stage/sql/Opening tables      |        0.0005 |         0.0005 |
|         1 |      208 | stage/sql/System lock         |        0.0003 |         0.0003 |
+-----------+----------+-------------------------------+---------------+----------------+
5 rows in set (0.00 sec)

 

记录执行语句的等待事件表 ， 官方文档：https://dev.mysql.com/doc/refman/5.7/en/performance-schema-wait-tables.html



--查看可记录语句每步执行时间的等待事件的表，如下：
mysql> SELECT table_name
       FROM information_schema.tables t
       WHERE t.table_schema='performance_schema'
       AND t.table_name LIKE 'events_waits%';
+-----------------------------------------------+
| table_name                                    |
+-----------------------------------------------+
| events_waits_current                          |
| events_waits_history                          |
| events_waits_history_long                     |
| events_waits_summary_by_account_by_event_name |
| events_waits_summary_by_host_by_event_name    |
| events_waits_summary_by_instance              |
| events_waits_summary_by_thread_by_event_name  |
| events_waits_summary_by_user_by_event_name    |
| events_waits_summary_global_by_event_name     |
+-----------------------------------------------+
9 rows in set (0.17 sec)



--查看是否开启了配置信息，写入到表中
mysql> SELECT *
       FROM performance_schema.setup_consumers
       WHERE NAME LIKE '%waits%';
+---------------------------+---------+
| NAME                      | ENABLED |
+---------------------------+---------+
| events_waits_current      | NO      |
| events_waits_history      | NO      |
| events_waits_history_long | NO      |
+---------------------------+---------+
3 rows in set (0.04 sec)


mysql> SELECT *
       FROM performance_schema.setup_instruments
       WHERE NAME LIKE 'wait/%';
+--------------------------------------------------------------------+---------+-------+
| NAME                                                               | ENABLED | TIMED |
+--------------------------------------------------------------------+---------+-------+
| wait/synch/mutex/sql/TC_LOG_MMAP::LOCK_tc                          | NO      | NO    |
| wait/synch/mutex/sql/LOCK_des_key_file                             | NO      | NO    |
| wait/synch/mutex/sql/MYSQL_BIN_LOG::LOCK_commit                    | NO      | NO    |
| wait/synch/mutex/sql/MYSQL_BIN_LOG::LOCK_commit_queue              | NO      | NO    |
| wait/synch/mutex/sql/MYSQL_BIN_LOG::LOCK_done                      | NO      | NO    |
......
| wait/lock/metadata/sql/mdl                                         | NO      | NO    |
+--------------------------------------------------------------------+---------+-------+
321 rows in set (0.00 sec)


--可以在my.cnf配置，永久的开启配置信息来记录等待事件执行语句到表中
[mysqld]
performance-schema-instrument='stage/%=ON'
performance-schema-consumer-events-stages-current=ON
performance-schema-consumer-events-stages-history=ON
performance-schema-consumer-events-stages-history-long=ON


--查看history历史表记录的数据量，history记录每个线程的最近10条，history_long记录所有线程的最近10000条
mysql> show variables like 'performance_schema_events_waits_history%';      
+---------------------------------------------------+-------+
| Variable_name                                     | Value |
+---------------------------------------------------+-------+
| performance_schema_events_waits_history_long_size | 10000 |
| performance_schema_events_waits_history_size      | 10    |
+---------------------------------------------------+-------+
2 rows in set (0.07 sec)



--查看历史执行时间最长的前5条每步具体时间，如下：
mysql> SELECT thread_id
             ,event_id
             ,event_name
             ,(timer_end-timer_start)/1000000000000 exec_time_sec
             ,timer_wait/1000000000000 timer_wait_sce
        FROM performance_schema.events_waits_history
       ORDER BY 4 DESC
       LIMIT 5;
+-----------+----------+--------------------------------------------+---------------+----------------+
| thread_id | event_id | event_name                                 | exec_time_sec | timer_wait_sce |
+-----------+----------+--------------------------------------------+---------------+----------------+
|        12 |        3 | wait/io/file/innodb/innodb_log_file        |        0.0169 |         0.0169 |
|         6 |      113 | wait/io/file/innodb/innodb_data_file       |        0.0169 |         0.0169 |
|        12 |        8 | wait/io/file/innodb/innodb_log_file        |        0.0034 |         0.0034 |
|        30 |     1242 | wait/io/socket/sql/client_connection       |        0.0001 |         0.0001 |
|         1 |    17170 | wait/synch/mutex/sql/LOCK_connection_count |        0.0000 |         0.0000 |
+-----------+----------+--------------------------------------------+---------------+----------------+
5 rows in set (0.00 sec)

 

--查看sql相应的具体等待事件


--执行一条测试的sql，分析此条sql的等待事件
mysql> SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns;
+----------+
| COUNT(1) |
+----------+
|     3193 |
+----------+
1 row in set, 1 warning (0.08 sec)



--查看上述sql的每个阶段的时间和事件
--说明：events_statements*表的event_id字段和events_stages*表的nesting_event_id字段关联
mysql> SELECT statement.sql_text,
              stages.event_id stage_event_id,
              stages.event_name stage_event_name ,
              stages.timer_wait/1000000000000  stage_timer_wait_sec  --秒
         FROM performance_schema.events_statements_history_long statement
         JOIN performance_schema.events_stages_history_long stages
           ON statement.event_id=stages.nesting_event_id
        WHERE statement.sql_text LIKE 'SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns'
        ORDER BY stages.timer_wait DESC
        LIMIT 10;
+----------------------------------------------------------------+----------------+--------------------------------+----------------------+
| sql_text                                                       | stage_event_id | stage_event_name               | stage_timer_wait_sec |
+----------------------------------------------------------------+----------------+--------------------------------+----------------------+
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          59168 | stage/sql/checking permissions |               0.0064 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          69109 | stage/sql/Sending data         |               0.0052 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          56443 | stage/sql/checking permissions |               0.0032 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          57885 | stage/sql/Opening tables       |               0.0015 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          56371 | stage/sql/starting             |               0.0012 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          65769 | stage/sql/Opening tables       |               0.0012 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          65969 | stage/sql/Opening tables       |               0.0006 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          58929 | stage/sql/checking permissions |               0.0006 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          68261 | stage/sql/Opening tables       |               0.0005 |
| SELECT /*+test_waits*/COUNT(1) FROM information_schema.columns |          66097 | stage/sql/Opening tables       |               0.0004 |
+----------------------------------------------------------------+----------------+--------------------------------+----------------------+
10 rows in set (0.08 sec)


--查看上述第二行的阶段(红色)的具体等待事件，如下：
--说明：events_stages*表的event_id字段和events_waits*表的nesting_event_id字段关联
mysql> SELECT thread_id
             ,event_id
             ,event_name
             ,(timer_end-timer_start) exec_time  --皮秒
             ,timer_wait timer_wait              --皮秒
         FROM performance_schema.events_waits_history_long t
        WHERE t.nesting_event_id = 69109
        ORDER BY timer_wait DESC;
+-----------+----------+-------------------------------------------+-----------+------------+
| thread_id | event_id | event_name                                | exec_time | timer_wait |
+-----------+----------+-------------------------------------------+-----------+------------+
|        29 |    69112 | wait/synch/sxlock/innodb/hash_table_locks |    626410 |     626410 |
|        29 |    69115 | wait/synch/sxlock/innodb/hash_table_locks |    194250 |     194250 |
|        29 |    69114 | wait/synch/sxlock/innodb/hash_table_locks |    156880 |     156880 |
|        29 |    69121 | wait/synch/sxlock/innodb/hash_table_locks |    150960 |     150960 |
|        29 |    69119 | wait/synch/sxlock/innodb/hash_table_locks |    145040 |     145040 |
|        29 |    69116 | wait/synch/sxlock/innodb/hash_table_locks |    125430 |     125430 |
|        29 |    69123 | wait/synch/sxlock/innodb/hash_table_locks |    122100 |     122100 |
|        29 |    69117 | wait/synch/sxlock/innodb/hash_table_locks |    121360 |     121360 |
|        29 |    69113 | wait/synch/sxlock/innodb/hash_table_locks |    119880 |     119880 |
|        29 |    69122 | wait/synch/sxlock/innodb/hash_table_locks |    119510 |     119510 |
|        29 |    69120 | wait/synch/sxlock/innodb/hash_table_locks |    115810 |     115810 |
|        29 |    69118 | wait/synch/sxlock/innodb/hash_table_locks |    110630 |     110630 |
|        29 |    69133 | wait/synch/sxlock/innodb/hash_table_locks |    106930 |     106930 |
|        29 |    69140 | wait/synch/sxlock/innodb/hash_table_locks |    106190 |     106190 |
|        29 |    69126 | wait/synch/sxlock/innodb/hash_table_locks |    105450 |     105450 |
|        29 |    69147 | wait/synch/sxlock/innodb/hash_table_locks |     96570 |      96570 |
|        29 |    69110 | wait/synch/mutex/innodb/trx_mutex         |     90280 |      90280 |
|        29 |    69124 | wait/synch/sxlock/innodb/hash_table_locks |     68080 |      68080 |
|        29 |    69127 | wait/synch/sxlock/innodb/hash_table_locks |     66600 |      66600 |
|        29 |    69144 | wait/synch/sxlock/innodb/hash_table_locks |     65860 |      65860 |
|        29 |    69143 | wait/synch/sxlock/innodb/hash_table_locks |     64750 |      64750 |
|        29 |    69141 | wait/synch/sxlock/innodb/hash_table_locks |     64010 |      64010 |
|        29 |    69132 | wait/synch/sxlock/innodb/hash_table_locks |     63270 |      63270 |
|        29 |    69142 | wait/synch/sxlock/innodb/hash_table_locks |     61050 |      61050 |
|        29 |    69137 | wait/synch/sxlock/innodb/hash_table_locks |     60680 |      60680 |
|        29 |    69145 | wait/synch/sxlock/innodb/hash_table_locks |     60310 |      60310 |
|        29 |    69146 | wait/synch/sxlock/innodb/hash_table_locks |     59940 |      59940 |
|        29 |    69128 | wait/synch/sxlock/innodb/hash_table_locks |     59570 |      59570 |
|        29 |    69134 | wait/synch/sxlock/innodb/hash_table_locks |     58830 |      58830 |
|        29 |    69131 | wait/synch/sxlock/innodb/hash_table_locks |     58830 |      58830 |
|        29 |    69125 | wait/synch/sxlock/innodb/hash_table_locks |     58460 |      58460 |
|        29 |    69129 | wait/synch/sxlock/innodb/hash_table_locks |     58090 |      58090 |
|        29 |    69136 | wait/synch/sxlock/innodb/hash_table_locks |     57350 |      57350 |
|        29 |    69135 | wait/synch/sxlock/innodb/hash_table_locks |     56240 |      56240 |
|        29 |    69139 | wait/synch/sxlock/innodb/hash_table_locks |     55500 |      55500 |
|        29 |    69138 | wait/synch/sxlock/innodb/hash_table_locks |     55130 |      55130 |
|        29 |    69130 | wait/synch/sxlock/innodb/hash_table_locks |     52910 |      52910 |
|        29 |    69111 | wait/synch/mutex/innodb/trx_mutex         |     36630 |      36630 |
+-----------+----------+-------------------------------------------+-----------+------------+
38 rows in set (0.01 sec)