part1 mysqlshow
mysqlshow
显示MySQL中数据库相关信息
补充说明
mysqlshow命令 用于显示mysql服务器中数据库、表和列表信息。
语法
mysqlshow(选项)(参数)
选项
-h：MySQL服务器的ip地址或主机名； -u：连接MySQL服务器的用户名； -p：连接MySQL服务器的密码； --count：显示每个数据表中数据的行数； -k：显示数据表的索引； -t：显示数据表的类型； -i：显示数据表的额外信息。
官网解释：https://dev.mysql.com/doc/refman/8.0/en/mysqlshow.html
root@li1548-187:/# mysqlshow -uroot -p123456 teddylt --count -t mysqlshow: [Warning] Using a password on the command line interface can be insecure. Database: teddylt +-----------------------------+------------+----------+------------+ | Tables | table_type | Columns | Total Rows | +-----------------------------+------------+----------+------------+ | wp_actionscheduler_actions | BASE TABLE | 13 | 1508 | | wp_actionscheduler_claims | BASE TABLE | 2 | 0 | | wp_actionscheduler_groups | BASE TABLE | 2 | 2 | | wp_actionscheduler_logs | BASE TABLE | 5 | 4518 | | wp_aioseo_notifications | BASE TABLE | 17 | 4 | | wp_aioseo_posts | BASE TABLE | 54 | 710 | | wp_aiowps_events | BASE TABLE | 10 | 730 | | wp_aiowps_failed_logins | BASE TABLE | 5 | 5000 | | wp_aiowps_global_meta | BASE TABLE | 12 | 0 | | wp_aiowps_login_activity | BASE TABLE | 8 | 369 | | wp_aiowps_login_lockdown | BASE TABLE | 8 | 201 | | wp_aiowps_permanent_block | BASE TABLE | 6 | 0 | | wp_commentmeta | BASE TABLE | 4 | 0 | | wp_comments | BASE TABLE | 15 | 10 | | wp_gwolle_gb_entries | BASE TABLE | 17 | 0 | | wp_gwolle_gb_log | BASE TABLE | 5 | 0 | | wp_history | BASE TABLE | 8 | 46 | | wp_history_admin | BASE TABLE | 4 | 1 | | wp_links | BASE TABLE | 13 | 0 | | wp_options | BASE TABLE | 4 | 434 | | wp_postmeta | BASE TABLE | 4 | 4743 | | wp_posts | BASE TABLE | 23 | 3634 | | wp_ppress_forms | BASE TABLE | 6 | 7 | | wp_ppress_formsmeta | BASE TABLE | 5 | 219 | | wp_ppress_meta_data | BASE TABLE | 4 | 0 | | wp_social_polling | BASE TABLE | 6 | 0 | | wp_social_polling_comments | BASE TABLE | 6 | 0 | | wp_term_relationships | BASE TABLE | 3 | 930 | | wp_term_taxonomy | BASE TABLE | 6 | 430 | | wp_termmeta | BASE TABLE | 4 | 7 | | wp_terms | BASE TABLE | 4 | 430 | | wp_usermeta | BASE TABLE | 4 | 59 | | wp_users | BASE TABLE | 10 | 1 | | wp_wc_avatars_cache | BASE TABLE | 7 | 0 | | wp_wc_comments_subscription | BASE TABLE | 9 | 0 | | wp_wc_feedback_forms | BASE TABLE | 6 | 0 | | wp_wc_follow_users | BASE TABLE | 12 | 0 | | wp_wc_phrases | BASE TABLE | 3 | 0 | | wp_wc_users_rated | BASE TABLE | 6 | 6 | | wp_wc_users_voted | BASE TABLE | 7 | 0 | | wp_wpgmza | BASE TABLE | 20 | 2 | | wp_wpgmza_circles | BASE TABLE | 7 | 0 | | wp_wpgmza_maps | BASE TABLE | 35 | 2 | | wp_wpgmza_polygon | BASE TABLE | 15 | 0 | | wp_wpgmza_polylines | BASE TABLE | 7 | 0 | | wp_wpgmza_rectangles | BASE TABLE | 7 | 0 | +-----------------------------+------------+----------+------------+ 46 rows in set.
使用场景
1)用于MySQL从旧库到新库，检查数据库是否是一致的！！！
part2
在MySQL中如何给普通用户授予查看所有用户线程/连接的权限
默认情况下show processlist是可以查看当前用户的线程/连接的
如果不给拥有授予PROESS权限 ，show processlist命令只能看到当前用户的线程，而授予了PROCESS权限后，使用show processlist就能看到所有用户的线程。官方文档的介绍如下：
SHOW PROCESSLIST shows you which threads are running. You can also get this information from the INFORMATION_SCHEMA PROCESSLIST table or the mysqladmin processlist command. If you have the PROCESS privilege, you can see all threads. Otherwise, you can see only your own threads (that is, threads associated with the MySQL account that you are using). If you do not use the FULL keyword, only the first 100 characters of each statement are shown in the Info field.
我们先创建下面账号test2,然后测试如下：
CREATE DATABASE dl_an_124_127_v10 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci; GRANT ALL PRIVILEGES ON dl_an_124_127_v10.* TO dl_an124game@'%' IDENTIFIED BY 'dl_an124game' WITH GRANT OPTION; GRANT PROCESS ON *.* TO dl_an124game@'%' IDENTIFIED BY 'dl_an124game' WITH GRANT OPTION; flush privileges;
如果给用户授予了PROCESS权限， 那么用户就拥有了使用SHOW ENGINES命令的权限，如下所示
mysql> select user(); +----------------+ | user() | +----------------+ | test@localhost | +----------------+ 1 row in set (0.00 sec) mysql> show engines; +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+ | Engine | Support | Comment | Transactions | XA | Savepoints | +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+ | MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO | | CSV | YES | CSV storage engine | NO | NO | NO | | MyISAM | YES | MyISAM storage engine | NO | NO | NO | | BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO | | MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO | | InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES | | ARCHIVE | YES | Archive storage engine | NO | NO | NO | | PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO | | FEDERATED | NO | Federated MySQL storage engine | NULL | NULL | NULL | +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+ 9 rows in set (0.00 sec)
PART3
关于mysqldump的2个参数的应用！！！ 1)--skip-extended-insert #Turn off extended-insert #关闭扩展插入！！！ 默认mysqldump会将多条插入语句导出成一条insert语句格式，如： insert into t values(1),(2); 那有时我想生成多条insert语句，如： insert into t values(1); insert into t values(2); 这时，在mysqldump时加上参数--skip-extended-insert即可，这样使导出文件更小，并加速导入时的速度 2)--complete-insert #用完整插入并且申明包括字段名 --complete-insert Use complete INSERT statements that include column names
part4
工作中常用的函数
1)count()函数
统计表中包含的记录行的总数和统计根据查询结果返回列中包含的数据行数
用法：
a)count(*),计算表中的总行数，无论是否有值或者是空值
b)count(字段名),计算指定列的总行数，将忽略空值的行
mysql> select * from person; +----+-----------+-----+------------------+ | id | name | age | info | +----+-----------+-----+------------------+ | 1 | teddy | 33 | DevOps-Engineer | | 2 | juice | 32 | educator | | 3 | laozhang | 33 | Python-Developer | | 4 | laowu | 31 | banker | | 5 | honglaing | 33 | singer | | 6 | renzhong | 18 | car-retailer | | 7 | laoliao | 18 | security-staff | | 8 | laoyu | 18 | C++ Developer | | 10 | liuqiang | 35 | security | | 12 | npc | 99 | NULL | +----+-----------+-----+------------------+ 10 rows in set (0.00 sec) mysql> select count(*) as person_total_rows from person; +-------------------+ | person_total_rows | +-------------------+ | 10 | +-------------------+ 1 row in set (0.00 sec) mysql> select count(info) as person_total_rows_of_info from person; +---------------------------+ | person_total_rows_of_info | +---------------------------+ | 9 | +---------------------------+ 1 row in set (0.00 sec)
2)sum()函数
mysql> select sum(age) as person_total_of_ages from person; +----------------------+ | person_total_of_ages | +----------------------+ | 350 | +----------------------+ 1 row in set (0.00 sec)
3)avg()函数
mysql> select avg(age) as person_average_of_ages from person; +------------------------+ | person_average_of_ages | +------------------------+ | 35.0000 | +------------------------+ 1 row in set (0.00 sec)
4)max()函数
mysql> select max(age) as person_max_age from person; +----------------+ | person_max_age | +----------------+ | 99 | +----------------+ 1 row in set (0.00 sec)
4)min()函数
mysql> select min(age) as person_min_age from person; +----------------+ | person_min_age | +----------------+ | 18 | +----------------+ 1 row in set (0.00 sec)
Part5
查看MySQL数据库、表容量大小
1.查看所有数据库容量大小
mysql> select
-> table_schema as 'db',
-> sum(table_rows) as 'record',
-> sum(truncate(data_length/1024/1024,2)) as "data capacity(MB)",
-> sum(truncate(index_length/1024/1024,2)) as "index capacity(MB)"
-> from information_schema.tables
-> group by table_schema
-> order by sum(data_length) desc,sum(index_length) desc;
+--------------------+----------+-------------------+--------------------+
| db | record | data capacity(MB) | index capacity(MB) |
+--------------------+----------+-------------------+--------------------+
| dl_an5_6_50_v2 | 24508252 | 3912.77 | 1127.54 |
| mysql | 3593 | 0.85 | 0.06 |
| test | 30 | 0.08 | 0.01 |
| company | 0 | 0.02 | 0.02 |
| teddylu | 7 | 0.02 | 0.00 |
| information_schema | NULL | 0.00 | 0.00 |
| performance_schema | 74026 | 0.00 | 0.00 |
+--------------------+----------+-------------------+--------------------+
7 rows in set (2.55 sec)
2.查看所有数据库各表容量大小
mysql> select table_schema as 'db', table_name as 'table_name', table_rows as 'record', truncate(data_length/1024/1024, 2) as 'data capacity(MB)', truncate(index_length/1024/1024, 2) as 'index capacity(MB)' from information_schema.tables ;
+--------------------+----------------------------------------------------+---------+-------------------+--------------------+
| db | table_name | record | data capacity(MB) | index capacity(MB) |
+--------------------+----------------------------------------------------+---------+-------------------+--------------------+
| information_schema | CHARACTER_SETS | NULL | 0.00 | 0.00 |
| information_schema | COLLATIONS | NULL | 0.00 | 0.00 |
| information_schema | COLLATION_CHARACTER_SET_APPLICABILITY | NULL | 0.00 | 0.00 |
| information_schema | COLUMNS | NULL | 0.00 | 0.00 |
| information_schema | COLUMN_PRIVILEGES | NULL | 0.00 | 0.00 |
| information_schema | ENGINES | NULL | 0.00 | 0.00 |
| information_schema | EVENTS | NULL | 0.00 | 0.00 |
| information_schema | FILES | NULL | 0.00 | 0.00 |
| information_schema | GLOBAL_STATUS | NULL | 0.00 | 0.00 |
| information_schema | GLOBAL_VARIABLES | NULL | 0.00 | 0.00 |
| information_schema | KEY_COLUMN_USAGE | NULL | 0.00 | 0.00 |
| information_schema | OPTIMIZER_TRACE | NULL | 0.00 | 0.00 |
| information_schema | PARAMETERS | NULL | 0.00 | 0.00 |
| information_schema | PARTITIONS | NULL | 0.00 | 0.00 |
| information_schema | PLUGINS | NULL | 0.00 | 0.00 |
| information_schema | PROCESSLIST | NULL | 0.00 | 0.00 |
| information_schema | PROFILING | NULL | 0.00 | 0.00 |
| information_schema | REFERENTIAL_CONSTRAINTS | NULL | 0.00 | 0.00 |
| information_schema | ROUTINES | NULL | 0.00 | 0.00 |
| information_schema | SCHEMATA | NULL | 0.00 | 0.00 |
| information_schema | SCHEMA_PRIVILEGES | NULL | 0.00 | 0.00 |
| information_schema | SESSION_STATUS | NULL | 0.00 | 0.00 |
| information_schema | SESSION_VARIABLES | NULL | 0.00 | 0.00 |
| information_schema | STATISTICS | NULL | 0.00 | 0.00 |
| information_schema | TABLES | NULL | 0.00 | 0.00 |
| information_schema | TABLESPACES | NULL | 0.00 | 0.00 |
| information_schema | TABLE_CONSTRAINTS | NULL | 0.00 | 0.00 |
| information_schema | TABLE_PRIVILEGES | NULL | 0.00 | 0.00 |
| information_schema | TRIGGERS | NULL | 0.00 | 0.00 |
| information_schema | USER_PRIVILEGES | NULL | 0.00 | 0.00 |
| information_schema | VIEWS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_LOCKS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_TRX | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_DATAFILES | NULL | 0.00 | 0.00 |
| information_schema | INNODB_LOCK_WAITS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_TABLESTATS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_CMP | NULL | 0.00 | 0.00 |
| information_schema | INNODB_METRICS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_CMP_RESET | NULL | 0.00 | 0.00 |
| information_schema | INNODB_CMP_PER_INDEX | NULL | 0.00 | 0.00 |
| information_schema | INNODB_CMPMEM_RESET | NULL | 0.00 | 0.00 |
| information_schema | INNODB_FT_DELETED | NULL | 0.00 | 0.00 |
| information_schema | INNODB_BUFFER_PAGE_LRU | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_FOREIGN | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_COLUMNS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_INDEXES | NULL | 0.00 | 0.00 |
| information_schema | INNODB_FT_DEFAULT_STOPWORD | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_FIELDS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_CMP_PER_INDEX_RESET | NULL | 0.00 | 0.00 |
| information_schema | INNODB_BUFFER_PAGE | NULL | 0.00 | 0.00 |
| information_schema | INNODB_CMPMEM | NULL | 0.00 | 0.00 |
| information_schema | INNODB_FT_INDEX_TABLE | NULL | 0.00 | 0.00 |
| information_schema | INNODB_FT_BEING_DELETED | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_TABLESPACES | NULL | 0.00 | 0.00 |
| information_schema | INNODB_FT_INDEX_CACHE | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_FOREIGN_COLS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_SYS_TABLES | NULL | 0.00 | 0.00 |
| information_schema | INNODB_BUFFER_POOL_STATS | NULL | 0.00 | 0.00 |
| information_schema | INNODB_FT_CONFIG | NULL | 0.00 | 0.00 |
| company | employees | 0 | 0.01 | 0.01 |
| company | offices | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | activitylist_global | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | arena_rank_10v10 | 200 | 0.06 | 0.00 |
| dl_an5_6_50_v2 | arena_rank_3v3 | 200 | 0.06 | 0.00 |
| dl_an5_6_50_v2 | arena_rank_5v5 | 200 | 0.06 | 0.00 |
| dl_an5_6_50_v2 | cemetery_rank | 21 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | core_id_allot | 0 | 0.01 | 0.03 |
| dl_an5_6_50_v2 | demo_achieve | 555633 | 71.60 | 22.56 |
| dl_an5_6_50_v2 | demo_achieve_7_day | 4470262 | 510.00 | 210.95 |
| dl_an5_6_50_v2 | demo_achieve_rank | 300 | 0.09 | 0.00 |
| dl_an5_6_50_v2 | demo_activatekey | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_active_soul_ring | 184926 | 12.51 | 7.51 |
| dl_an5_6_50_v2 | demo_activity | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_activity_custom | 9002 | 1.51 | 0.00 |
| dl_an5_6_50_v2 | demo_activitycontrol | 58710 | 25.56 | 0.00 |
| dl_an5_6_50_v2 | demo_activitylist | 1124768 | 200.75 | 51.64 |
| dl_an5_6_50_v2 | demo_answer_rank | 43 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_artifact | 56034 | 4.51 | 0.00 |
| dl_an5_6_50_v2 | demo_artifact_uniqueskill | 58745 | 10.51 | 0.00 |
| dl_an5_6_50_v2 | demo_attend_log | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_attend_rep_log | 314371 | 39.57 | 13.54 |
| dl_an5_6_50_v2 | demo_auction | 18208 | 2.51 | 1.51 |
| dl_an5_6_50_v2 | demo_auction_item | 212 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_auction_log | 3261 | 0.42 | 0.00 |
| dl_an5_6_50_v2 | demo_banned | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_buff | 5337 | 1.51 | 0.37 |
| dl_an5_6_50_v2 | demo_camp | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_camp_rank | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_combat_rank | 200 | 0.07 | 0.00 |
| dl_an5_6_50_v2 | demo_competition_human | 15303 | 7.51 | 0.78 |
| dl_an5_6_50_v2 | demo_competition_log | 3495 | 0.48 | 0.68 |
| dl_an5_6_50_v2 | demo_competition_mirror | 13936 | 13.51 | 2.12 |
| dl_an5_6_50_v2 | demo_cost_log | 4483748 | 514.00 | 165.84 |
| dl_an5_6_50_v2 | demo_delegate | 55650 | 18.54 | 1.51 |
| dl_an5_6_50_v2 | demo_even_charge | 267 | 0.06 | 0.00 |
| dl_an5_6_50_v2 | demo_faction | 40 | 0.12 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_activity | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_building | 280 | 0.04 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_deity_beast | 481 | 0.06 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_donate_records | 289695 | 19.54 | 6.51 |
| dl_an5_6_50_v2 | demo_faction_fund_log | 309063 | 34.56 | 8.51 |
| dl_an5_6_50_v2 | demo_faction_machine | 280 | 0.04 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_member | 2835 | 1.51 | 0.10 |
| dl_an5_6_50_v2 | demo_faction_merge_record | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_moving | 22968 | 3.51 | 3.03 |
| dl_an5_6_50_v2 | demo_faction_notice | 1171 | 0.18 | 0.06 |
| dl_an5_6_50_v2 | demo_faction_qualify_record | 8 | 0.01 | 0.04 |
| dl_an5_6_50_v2 | demo_faction_record | 2 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_redgift | 890 | 1.51 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_repo_item | 237 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_repo_log | 2585 | 0.26 | 0.14 |
| dl_an5_6_50_v2 | demo_faction_spread | 481 | 0.06 | 0.01 |
| dl_an5_6_50_v2 | demo_faction_trade | 13706 | 1.51 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_trade_help | 15 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_trade_order | 27529 | 3.51 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_trade_order_goods | 96316 | 6.51 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_war | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_faction_war_final_rank | 8 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_fallen_soul_npc_record | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_fashion | 56128 | 16.54 | 1.51 |
| dl_an5_6_50_v2 | demo_fill_mail | 5 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_flyback_info | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_friend | 50425 | 10.51 | 1.51 |
| dl_an5_6_50_v2 | demo_friend_group_info | 10 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_general | 256448 | 125.67 | 24.54 |
| dl_an5_6_50_v2 | demo_general_rank | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_giftactivate | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_human | 52307 | 82.62 | 16.60 |
| dl_an5_6_50_v2 | demo_human_daily_reset_time | 26740 | 2.51 | 1.51 |
| dl_an5_6_50_v2 | demo_human_info | 50438 | 109.64 | 0.00 |
| dl_an5_6_50_v2 | demo_human_subjoin_info | 54008 | 78.60 | 0.00 |
| dl_an5_6_50_v2 | demo_human_world_boss | 26 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_instance | 645154 | 31.56 | 26.59 |
| dl_an5_6_50_v2 | demo_instance_rank | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_item | 2799468 | 340.89 | 190.42 |
| dl_an5_6_50_v2 | demo_killer_log | 39861 | 3.51 | 5.03 |
| dl_an5_6_50_v2 | demo_level_rank | 200 | 0.07 | 0.00 |
| dl_an5_6_50_v2 | demo_mail | 35313 | 9.51 | 3.03 |
| dl_an5_6_50_v2 | demo_medal_task | 210672 | 315.87 | 0.00 |
| dl_an5_6_50_v2 | demo_monster | 0 | 0.01 | 0.03 |
| dl_an5_6_50_v2 | demo_month_card | 2378 | 0.20 | 0.00 |
| dl_an5_6_50_v2 | demo_operate_activity | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_output_filter | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_part | 561064 | 51.59 | 12.54 |
| dl_an5_6_50_v2 | demo_part_mirror | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_pay_drop_num | 96 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_pay_log | 40900 | 6.51 | 5.03 |
| dl_an5_6_50_v2 | demo_pet | 64182 | 55.59 | 6.54 |
| dl_an5_6_50_v2 | demo_pet_info | 56641 | 5.51 | 0.00 |
| dl_an5_6_50_v2 | demo_pet_rank | 300 | 0.18 | 0.00 |
| dl_an5_6_50_v2 | demo_pocket_line | 188385 | 19.54 | 7.51 |
| dl_an5_6_50_v2 | demo_quest | 55989 | 38.57 | 1.51 |
| dl_an5_6_50_v2 | demo_quest_item | 311018 | 25.56 | 11.54 |
| dl_an5_6_50_v2 | demo_question_complaint | 0 | 0.01 | 0.03 |
| dl_an5_6_50_v2 | demo_rank_charge_gold | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_rank_rose | 17 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_rare_item_log | 4917853 | 462.00 | 283.57 |
| dl_an5_6_50_v2 | demo_red_bag | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_red_bag_record | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_ringslots | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_setting | 57596 | 4.51 | 1.51 |
| dl_an5_6_50_v2 | demo_shop | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_soul | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_soul_bone | 57476 | 3.51 | 1.51 |
| dl_an5_6_50_v2 | demo_soul_bone_equip | 5962 | 0.35 | 0.20 |
| dl_an5_6_50_v2 | demo_soul_bone_reward | 43690 | 20.54 | 0.00 |
| dl_an5_6_50_v2 | demo_soul_ring | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_soul_title | 255807 | 22.56 | 0.00 |
| dl_an5_6_50_v2 | demo_soul_tower | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_talent | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_team | 1559 | 0.23 | 0.06 |
| dl_an5_6_50_v2 | demo_team_member | 662 | 0.14 | 0.03 |
| dl_an5_6_50_v2 | demo_time_record | 9 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | demo_to_view | 9571 | 33.56 | 0.35 |
| dl_an5_6_50_v2 | demo_tower | 254390 | 15.54 | 0.00 |
| dl_an5_6_50_v2 | demo_tower2_rank | 236 | 0.07 | 0.00 |
| dl_an5_6_50_v2 | demo_tower_mirror | 0 | 0.01 | 0.06 |
| dl_an5_6_50_v2 | demo_tower_rank | 259 | 0.07 | 0.00 |
| dl_an5_6_50_v2 | demo_turntable | 292 | 0.06 | 0.01 |
| dl_an5_6_50_v2 | demo_turntablehistory | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_unit_propplus | 485668 | 217.76 | 0.00 |
| dl_an5_6_50_v2 | demo_war_final | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | demo_wine | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | entrust_quest | 183416 | 13.51 | 8.51 |
| dl_an5_6_50_v2 | faction_combat_rank | 382 | 0.06 | 0.00 |
| dl_an5_6_50_v2 | faction_explore_rank | 6 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | faction_qualify_rank | 41 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | game_session | 3 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | global_data | 0 | 0.01 | 0.01 |
| dl_an5_6_50_v2 | humanmirror | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | humanqunying | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | hunting_rank | 65 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeanswer | 22 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleebomb | 16 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding10 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding11 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding12 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding13 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding14 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding15 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding16 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding17 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding18 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding19 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding2 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding20 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding3 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding4 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding5 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding6 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding7 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding8 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | rank_meleeriding9 | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | seagod_rank | 154 | 0.09 | 0.00 |
| dl_an5_6_50_v2 | server_global | 0 | 0.01 | 0.00 |
| dl_an5_6_50_v2 | shopping_mall | 418165 | 238.78 | 18.56 |
| dl_an5_6_50_v2 | threetothree | 55153 | 39.57 | 0.00 |
| dl_an5_6_50_v2 | word_boss | 4 | 0.01 | 0.00 |
| mysql | columns_priv | 0 | 0.00 | 0.00 |
| mysql | db | 2 | 0.00 | 0.00 |
| mysql | event | 0 | 0.00 | 0.00 |
| mysql | func | 0 | 0.00 | 0.00 |
| mysql | general_log | 2 | 0.00 | 0.00 |
| mysql | help_category | 40 | 0.00 | 0.00 |
| mysql | help_keyword | 619 | 0.11 | 0.02 |
| mysql | help_relation | 1273 | 0.01 | 0.02 |
| mysql | help_topic | 585 | 0.55 | 0.02 |
| mysql | innodb_index_stats | 955 | 0.14 | 0.00 |
| mysql | innodb_table_stats | 170 | 0.01 | 0.00 |
| mysql | ndb_binlog_index | 0 | 0.00 | 0.00 |
| mysql | plugin | 0 | 0.00 | 0.00 |
| mysql | proc | 0 | 0.00 | 0.00 |
| mysql | procs_priv | 0 | 0.00 | 0.00 |
| mysql | proxies_priv | 2 | 0.00 | 0.00 |
| mysql | servers | 0 | 0.00 | 0.00 |
| mysql | slave_master_info | 0 | 0.01 | 0.00 |
| mysql | slave_relay_log_info | 0 | 0.01 | 0.00 |
| mysql | slave_worker_info | 0 | 0.01 | 0.00 |
| mysql | slow_log | 2 | 0.00 | 0.00 |
| mysql | tables_priv | 0 | 0.00 | 0.00 |
| mysql | time_zone | 0 | 0.00 | 0.00 |
| mysql | time_zone_leap_second | 0 | 0.00 | 0.00 |
| mysql | time_zone_name | 0 | 0.00 | 0.00 |
| mysql | time_zone_transition | 0 | 0.00 | 0.00 |
| mysql | time_zone_transition_type | 0 | 0.00 | 0.00 |
| mysql | user | 7 | 0.00 | 0.00 |
| performance_schema | accounts | 1000 | 0.00 | 0.00 |
| performance_schema | cond_instances | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_current | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_history | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_history_long | 10000 | 0.00 | 0.00 |
| performance_schema | events_stages_summary_by_account_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_summary_by_host_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_summary_by_thread_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_summary_by_user_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_stages_summary_global_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_current | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_history | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_history_long | 10000 | 0.00 | 0.00 |
| performance_schema | events_statements_summary_by_account_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_summary_by_digest | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_summary_by_host_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_summary_by_thread_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_summary_by_user_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_statements_summary_global_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_current | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_history | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_history_long | 10000 | 0.00 | 0.00 |
| performance_schema | events_waits_summary_by_account_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_summary_by_host_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_summary_by_instance | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_summary_by_thread_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_summary_by_user_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | events_waits_summary_global_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | file_instances | 1000 | 0.00 | 0.00 |
| performance_schema | file_summary_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | file_summary_by_instance | 1000 | 0.00 | 0.00 |
| performance_schema | host_cache | 1000 | 0.00 | 0.00 |
| performance_schema | hosts | 1000 | 0.00 | 0.00 |
| performance_schema | mutex_instances | 1000 | 0.00 | 0.00 |
| performance_schema | objects_summary_global_by_type | 1000 | 0.00 | 0.00 |
| performance_schema | performance_timers | 5 | 0.00 | 0.00 |
| performance_schema | rwlock_instances | 1000 | 0.00 | 0.00 |
| performance_schema | session_account_connect_attrs | 1000 | 0.00 | 0.00 |
| performance_schema | session_connect_attrs | 1000 | 0.00 | 0.00 |
| performance_schema | setup_actors | 1 | 0.00 | 0.00 |
| performance_schema | setup_consumers | 12 | 0.00 | 0.00 |
| performance_schema | setup_instruments | 1000 | 0.00 | 0.00 |
| performance_schema | setup_objects | 4 | 0.00 | 0.00 |
| performance_schema | setup_timers | 4 | 0.00 | 0.00 |
| performance_schema | socket_instances | 1000 | 0.00 | 0.00 |
| performance_schema | socket_summary_by_event_name | 1000 | 0.00 | 0.00 |
| performance_schema | socket_summary_by_instance | 1000 | 0.00 | 0.00 |
| performance_schema | table_io_waits_summary_by_index_usage | 1000 | 0.00 | 0.00 |
| performance_schema | table_io_waits_summary_by_table | 1000 | 0.00 | 0.00 |
| performance_schema | table_lock_waits_summary_by_table | 1000 | 0.00 | 0.00 |
| performance_schema | threads | 1000 | 0.00 | 0.00 |
| performance_schema | users | 1000 | 0.00 | 0.00 |
| teddylu | lishi | 2 | 0.01 | 0.00 |
| teddylu | test1 | 4 | 0.01 | 0.00 |
| test | person | 9 | 0.01 | 0.01 |
| test | person_old | 2 | 0.01 | 0.00 |
| test | tmp3 | 2 | 0.01 | 0.00 |
| test | tmp4 | 7 | 0.01 | 0.00 |
| test | tmp5 | 3 | 0.01 | 0.00 |
| test | tmp6 | 0 | 0.01 | 0.00 |
| test | tmp7 | 0 | 0.01 | 0.00 |
| test | tmp8 | 0 | 0.01 | 0.00 |
+--------------------+----------------------------------------------------+---------+-------------------+--------------------+
309 rows in set (0.01 sec)
3.查看指定数据库容量大小
mysql> select table_schema as 'db', sum(table_rows) as 'records', sum(truncate(data_length/1024/1024,2)) as 'data capacity(MB)', sum(truncate(index_length/1024/1024,2)) as 'index capacity(MB)' from information_schema.tables where table_schema='mysql';
+-------+---------+-------------------+--------------------+
| db | records | data capacity(MB) | index capacity(MB) |
+-------+---------+-------------------+--------------------+
| mysql | 3657 | 0.85 | 0.06 |
+-------+---------+-------------------+--------------------+
1 row in set (0.00 sec)
4.查看指定数据库各表容量大小
mysql> select
-> table_schema as '数据库',
-> table_name as '表名',
-> table_rows as '记录数',
-> truncate(data_length/1024/1024, 2) as '数据容量(MB)',
-> truncate(index_length/1024/1024, 2) as '索引容量(MB)'
-> from information_schema.tables
-> where table_schema='mysql'
-> order by data_length desc, index_length desc;
+-----------+---------------------------+-----------+------------------+------------------+
| 数据库 | 表名 | 记录数 | 数据容量(MB) | 索引容量(MB) |
+-----------+---------------------------+-----------+------------------+------------------+
| mysql | help_topic | 585 | 0.55 | 0.02 |
| mysql | innodb_index_stats | 955 | 0.14 | 0.00 |
| mysql | help_keyword | 619 | 0.11 | 0.02 |
| mysql | slave_worker_info | 0 | 0.01 | 0.00 |
| mysql | slave_relay_log_info | 0 | 0.01 | 0.00 |
| mysql | slave_master_info | 0 | 0.01 | 0.00 |
| mysql | innodb_table_stats | 170 | 0.01 | 0.00 |
| mysql | help_relation | 1273 | 0.01 | 0.02 |
| mysql | proxies_priv | 2 | 0.00 | 0.00 |
| mysql | help_category | 40 | 0.00 | 0.00 |
| mysql | db | 2 | 0.00 | 0.00 |
| mysql | user | 7 | 0.00 | 0.00 |
| mysql | procs_priv | 0 | 0.00 | 0.00 |
| mysql | columns_priv | 0 | 0.00 | 0.00 |
| mysql | tables_priv | 0 | 0.00 | 0.00 |
| mysql | proc | 0 | 0.00 | 0.00 |
| mysql | event | 0 | 0.00 | 0.00 |
| mysql | func | 0 | 0.00 | 0.00 |
| mysql | servers | 0 | 0.00 | 0.00 |
| mysql | time_zone_transition_type | 0 | 0.00 | 0.00 |
| mysql | plugin | 0 | 0.00 | 0.00 |
| mysql | time_zone_transition | 0 | 0.00 | 0.00 |
| mysql | ndb_binlog_index | 0 | 0.00 | 0.00 |
| mysql | time_zone_name | 0 | 0.00 | 0.00 |
| mysql | time_zone_leap_second | 0 | 0.00 | 0.00 |
| mysql | time_zone | 0 | 0.00 | 0.00 |
| mysql | general_log | 2 | 0.00 | 0.00 |
| mysql | slow_log | 2 | 0.00 | 0.00 |
+-----------+---------------------------+-----------+------------------+------------------+
28 rows in set (0.00 sec)
part6
show-variables-v5.6.39
Variable_name Value auto_increment_increment 1 auto_increment_offset 1 autocommit ON automatic_sp_privileges ON avoid_temporal_upgrade OFF back_log 80 basedir /application/mysql-5.6.39/ big_tables OFF bind_address * binlog_cache_size 32768 binlog_checksum CRC32 binlog_direct_non_transactional_updates OFF binlog_error_action IGNORE_ERROR binlog_format STATEMENT binlog_gtid_simple_recovery OFF binlog_max_flush_queue_time 0 binlog_order_commits ON binlog_row_image FULL binlog_rows_query_log_events OFF binlog_stmt_cache_size 32768 binlogging_impossible_mode IGNORE_ERROR block_encryption_mode aes-128-ecb bulk_insert_buffer_size 8388608 character_set_client utf8 character_set_connection utf8 character_set_database utf8 character_set_filesystem binary character_set_results utf8 character_set_server utf8 character_set_system utf8 character_sets_dir /application/mysql-5.6.39/share/charsets/ collation_connection utf8_general_ci collation_database utf8_general_ci collation_server utf8_general_ci completion_type NO_CHAIN concurrent_insert AUTO connect_timeout 10 core_file OFF datadir /application/mysql-5.6.39/data/ date_format %Y-%m-%d datetime_format %Y-%m-%d %H:%i:%s default_storage_engine InnoDB default_tmp_storage_engine InnoDB default_week_format 0 delay_key_write ON delayed_insert_limit 100 delayed_insert_timeout 300 delayed_queue_size 1000 disconnect_on_expired_password ON div_precision_increment 4 end_markers_in_json OFF enforce_gtid_consistency OFF eq_range_index_dive_limit 10 error_count 0 event_scheduler OFF expire_logs_days 0 explicit_defaults_for_timestamp OFF external_user flush OFF flush_time 0 foreign_key_checks ON ft_boolean_syntax + -><()~*:""&| ft_max_word_len 84 ft_min_word_len 4 ft_query_expansion_limit 20 ft_stopword_file (built-in) general_log OFF general_log_file /application/mysql-5.6.39/data/localhost.log group_concat_max_len 1024 gtid_executed gtid_mode OFF gtid_next AUTOMATIC gtid_owned gtid_purged have_compress YES have_crypt YES have_dynamic_loading YES have_geometry YES have_openssl DISABLED have_profiling YES have_query_cache YES have_rtree_keys YES have_ssl DISABLED have_symlink YES host_cache_size 279 hostname localhost.localdomain identity 0 ignore_builtin_innodb OFF ignore_db_dirs init_connect init_file init_slave innodb_adaptive_flushing ON innodb_adaptive_flushing_lwm 10 innodb_adaptive_hash_index ON innodb_adaptive_max_sleep_delay 150000 innodb_additional_mem_pool_size 8388608 innodb_api_bk_commit_interval 5 innodb_api_disable_rowlock OFF innodb_api_enable_binlog OFF innodb_api_enable_mdl OFF innodb_api_trx_level 0 innodb_autoextend_increment 64 innodb_autoinc_lock_mode 1 innodb_buffer_pool_dump_at_shutdown OFF innodb_buffer_pool_dump_now OFF innodb_buffer_pool_filename ib_buffer_pool innodb_buffer_pool_instances 8 innodb_buffer_pool_load_abort OFF innodb_buffer_pool_load_at_startup OFF innodb_buffer_pool_load_now OFF innodb_buffer_pool_size 134217728 innodb_change_buffer_max_size 25 innodb_change_buffering all innodb_checksum_algorithm innodb innodb_checksums ON innodb_cmp_per_index_enabled OFF innodb_commit_concurrency 0 innodb_compression_failure_threshold_pct 5 innodb_compression_level 6 innodb_compression_pad_pct_max 50 innodb_concurrency_tickets 5000 innodb_data_file_path ibdata1:12M:autoextend innodb_data_home_dir innodb_disable_sort_file_cache OFF innodb_doublewrite ON innodb_fast_shutdown 1 innodb_file_format Antelope innodb_file_format_check ON innodb_file_format_max Antelope innodb_file_per_table ON innodb_flush_log_at_timeout 1 innodb_flush_log_at_trx_commit 1 innodb_flush_method innodb_flush_neighbors 1 innodb_flushing_avg_loops 30 innodb_force_load_corrupted OFF innodb_force_recovery 0 innodb_ft_aux_table innodb_ft_cache_size 8000000 innodb_ft_enable_diag_print OFF innodb_ft_enable_stopword ON innodb_ft_max_token_size 84 innodb_ft_min_token_size 3 innodb_ft_num_word_optimize 2000 innodb_ft_result_cache_limit 2000000000 innodb_ft_server_stopword_table innodb_ft_sort_pll_degree 2 innodb_ft_total_cache_size 640000000 innodb_ft_user_stopword_table innodb_io_capacity 200 innodb_io_capacity_max 2000 innodb_large_prefix OFF innodb_lock_wait_timeout 50 innodb_locks_unsafe_for_binlog OFF innodb_log_buffer_size 8388608 innodb_log_compressed_pages ON innodb_log_file_size 50331648 innodb_log_files_in_group 2 innodb_log_group_home_dir ./ innodb_lru_scan_depth 1024 innodb_max_dirty_pages_pct 75 innodb_max_dirty_pages_pct_lwm 0 innodb_max_purge_lag 0 innodb_max_purge_lag_delay 0 innodb_mirrored_log_groups 1 innodb_monitor_disable innodb_monitor_enable innodb_monitor_reset innodb_monitor_reset_all innodb_old_blocks_pct 37 innodb_old_blocks_time 1000 innodb_online_alter_log_max_size 134217728 innodb_open_files 2000 innodb_optimize_fulltext_only OFF innodb_page_size 16384 innodb_print_all_deadlocks OFF innodb_purge_batch_size 300 innodb_purge_threads 1 innodb_random_read_ahead OFF innodb_read_ahead_threshold 56 innodb_read_io_threads 4 innodb_read_only OFF innodb_replication_delay 0 innodb_rollback_on_timeout OFF innodb_rollback_segments 128 innodb_sort_buffer_size 1048576 innodb_spin_wait_delay 6 innodb_stats_auto_recalc ON innodb_stats_include_delete_marked OFF innodb_stats_method nulls_equal innodb_stats_on_metadata OFF innodb_stats_persistent ON innodb_stats_persistent_sample_pages 20 innodb_stats_sample_pages 8 innodb_stats_transient_sample_pages 8 innodb_status_output OFF innodb_status_output_locks OFF innodb_strict_mode OFF innodb_support_xa ON innodb_sync_array_size 1 innodb_sync_spin_loops 30 innodb_table_locks ON innodb_thread_concurrency 0 innodb_thread_sleep_delay 10000 innodb_tmpdir innodb_undo_directory . innodb_undo_logs 128 innodb_undo_tablespaces 0 innodb_use_native_aio OFF innodb_use_sys_malloc ON innodb_version 5.6.39 innodb_write_io_threads 4 insert_id 0 interactive_timeout 28800 join_buffer_size 262144 keep_files_on_create OFF key_buffer_size 8388608 key_cache_age_threshold 300 key_cache_block_size 1024 key_cache_division_limit 100 large_files_support ON large_page_size 0 large_pages OFF last_insert_id 0 lc_messages en_US lc_messages_dir /application/mysql-5.6.39/share/ lc_time_names en_US license GPL local_infile ON lock_wait_timeout 31536000 locked_in_memory OFF log_bin OFF log_bin_basename log_bin_index log_bin_trust_function_creators OFF log_bin_use_v1_row_events OFF log_error ./localhost.localdomain.err log_output FILE log_queries_not_using_indexes OFF log_slave_updates OFF log_slow_admin_statements OFF log_slow_slave_statements OFF log_throttle_queries_not_using_indexes 0 log_warnings 1 long_query_time 10.000000 low_priority_updates OFF lower_case_file_system OFF lower_case_table_names 0 master_info_repository FILE master_verify_checksum OFF max_allowed_packet 4194304 max_binlog_cache_size 18446744073709547520 max_binlog_size 1073741824 max_binlog_stmt_cache_size 18446744073709547520 max_connect_errors 100 max_connections 151 max_delayed_threads 20 max_digest_length 1024 max_error_count 64 max_heap_table_size 16777216 max_insert_delayed_threads 20 max_join_size 18446744073709551615 max_length_for_sort_data 1024 max_prepared_stmt_count 16382 max_relay_log_size 0 max_seeks_for_key 18446744073709551615 max_sort_length 1024 max_sp_recursion_depth 0 max_tmp_tables 32 max_user_connections 0 max_write_lock_count 18446744073709551615 metadata_locks_cache_size 1024 metadata_locks_hash_instances 8 min_examined_row_limit 0 multi_range_count 256 myisam_data_pointer_size 6 myisam_max_sort_file_size 9223372036853727232 myisam_mmap_size 18446744073709551615 myisam_recover_options OFF myisam_repair_threads 1 myisam_sort_buffer_size 8388608 myisam_stats_method nulls_unequal myisam_use_mmap OFF net_buffer_length 16384 net_read_timeout 30 net_retry_count 10 net_write_timeout 60 new OFF old OFF old_alter_table OFF old_passwords 0 open_files_limit 1000000 optimizer_prune_level 1 optimizer_search_depth 62 optimizer_switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=on,block_nested_loop=on,batched_key_access=off,materialization=on,semijoin=on,loosescan=on,firstmatch=on,subquery_materialization_cost_based=on,use_index_extensions=on optimizer_trace enabled=off,one_line=off optimizer_trace_features greedy_search=on,range_optimizer=on,dynamic_range=on,repeated_subselect=on optimizer_trace_limit 1 optimizer_trace_max_mem_size 16384 optimizer_trace_offset -1 performance_schema ON performance_schema_accounts_size 100 performance_schema_digests_size 10000 performance_schema_events_stages_history_long_size 10000 performance_schema_events_stages_history_size 10 performance_schema_events_statements_history_long_size 10000 performance_schema_events_statements_history_size 10 performance_schema_events_waits_history_long_size 10000 performance_schema_events_waits_history_size 10 performance_schema_hosts_size 100 performance_schema_max_cond_classes 80 performance_schema_max_cond_instances 3504 performance_schema_max_digest_length 1024 performance_schema_max_file_classes 50 performance_schema_max_file_handles 32768 performance_schema_max_file_instances 7693 performance_schema_max_mutex_classes 200 performance_schema_max_mutex_instances 15906 performance_schema_max_rwlock_classes 40 performance_schema_max_rwlock_instances 9102 performance_schema_max_socket_classes 10 performance_schema_max_socket_instances 322 performance_schema_max_stage_classes 150 performance_schema_max_statement_classes 168 performance_schema_max_table_handles 4000 performance_schema_max_table_instances 12500 performance_schema_max_thread_classes 50 performance_schema_max_thread_instances 402 performance_schema_session_connect_attrs_size 512 performance_schema_setup_actors_size 100 performance_schema_setup_objects_size 100 performance_schema_users_size 100 pid_file /application/mysql-5.6.39/data/localhost.localdomain.pid plugin_dir /application/mysql-5.6.39/lib/plugin/ port 3306 preload_buffer_size 32768 profiling OFF profiling_history_size 15 protocol_version 10 proxy_user pseudo_slave_mode OFF pseudo_thread_id 10 query_alloc_block_size 8192 query_cache_limit 1048576 query_cache_min_res_unit 4096 query_cache_size 1048576 query_cache_type OFF query_cache_wlock_invalidate OFF query_prealloc_size 8192 rand_seed1 0 rand_seed2 0 range_alloc_block_size 4096 read_buffer_size 131072 read_only OFF read_rnd_buffer_size 262144 relay_log relay_log_basename relay_log_index relay_log_info_file relay-log.info relay_log_info_repository FILE relay_log_purge ON relay_log_recovery OFF relay_log_space_limit 0 report_host report_password report_port 3306 report_user rpl_stop_slave_timeout 31536000 secure_auth ON secure_file_priv NULL server_id 0 server_id_bits 32 server_uuid 41ce72da-db03-11eb-81ab-0050562a973d show_old_temporals OFF simplified_binlog_gtid_recovery OFF skip_external_locking ON skip_name_resolve OFF skip_networking OFF skip_show_database OFF slave_allow_batching OFF slave_checkpoint_group 512 slave_checkpoint_period 300 slave_compressed_protocol OFF slave_exec_mode STRICT slave_load_tmpdir /tmp slave_max_allowed_packet 1073741824 slave_net_timeout 3600 slave_parallel_workers 0 slave_pending_jobs_size_max 16777216 slave_rows_search_algorithms TABLE_SCAN,INDEX_SCAN slave_skip_errors OFF slave_sql_verify_checksum ON slave_transaction_retries 10 slave_type_conversions slow_launch_time 2 slow_query_log OFF slow_query_log_file /application/mysql-5.6.39/data/localhost-slow.log socket /application/mysql-5.6.39/tmp/mysql.sock sort_buffer_size 262144 sql_auto_is_null OFF sql_big_selects ON sql_buffer_result OFF sql_log_bin ON sql_log_off OFF sql_mode STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION sql_notes ON sql_quote_show_create ON sql_safe_updates OFF sql_select_limit 18446744073709551615 sql_slave_skip_counter 0 sql_warnings OFF ssl_ca ssl_capath ssl_cert ssl_cipher ssl_crl ssl_crlpath ssl_key storage_engine InnoDB stored_program_cache 256 sync_binlog 0 sync_frm ON sync_master_info 10000 sync_relay_log 10000 sync_relay_log_info 10000 system_time_zone CST table_definition_cache 1400 table_open_cache 2000 table_open_cache_instances 1 thread_cache_size 9 thread_concurrency 10 thread_handling one-thread-per-connection thread_stack 262144 time_format %H:%i:%s time_zone SYSTEM timed_mutexes OFF timestamp 1626404833.208162 tmp_table_size 16777216 tmpdir /tmp transaction_alloc_block_size 8192 transaction_allow_batching OFF transaction_prealloc_size 4096 tx_isolation REPEATABLE-READ tx_read_only OFF unique_checks ON updatable_views_with_limit YES version 5.6.39 version_comment Source distribution version_compile_machine x86_64 version_compile_os Linux wait_timeout 28800 warning_count 0
part7
#备份语句！！！
mysqldump --set-gtid-purged=OFF -h 192.168.1.94 -uroot -p -ntd -R op_qscdb > 01_op_qscdb_20210320.sql
mysqldump --set-gtid-purged=OFF -h 192.168.1.94 -uroot -p op_qscdb > 02_op_qscdb_20210320.sql
-n, --no-create-db Suppress the CREATE DATABASE ... IF EXISTS statement that
normally is output for each dumped database if
--all-databases or --databases is given.
#不创建数据库
-t, --no-create-info
Don't write table creation info.
#不创建表的创建信息
#这个选项使的mysqldump命令不创建CREATE TABLE语句，这个选项在您只需要数据而不需要DDL（数据库定义语句）时很方便。
-d, --no-data No row information
#不创建数据(行)
--routines, -R
#将使存储过程、函数也转储到文件中来
--opt
#如果你正将数据移动到更新版本的MySQL，你应当使用mysqldump --opt来利用各种优化性能来产生更小、可以更快处理的转储文件
目的：保证先还原存储过程！！！再还原数据！！！
新学到的mysql命令(updating)