查询所有数据库占用磁盘空间大小的SQL语句：
语句如下
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select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024,2),' MB') as data_size,concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_sizefrom information_schema.tablesgroup by TABLE_SCHEMAorder by data_length desc; |
执行结果如下
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mysql> select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024,2),' MB') as data_size,concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_sizefrom information_schema.tablesgroup by TABLE_SCHEMAorder by data_length desc;+--------------------+------------+------------+| TABLE_SCHEMA | data_size | index_size |+--------------------+------------+------------+| shdx | 1042.38 MB | 258.97MB || mysql | 0.52 MB | 0.08MB || information_schema | 0.00 MB | 0.00MB |+--------------------+------------+------------+3 rows in setmysql> |
查询单个库中所有表磁盘占用大小的SQL语句：
执行语句如下
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select TABLE_NAME, concat(truncate(data_length/1024/1024,2),' MB') as data_size,concat(truncate(index_length/1024/1024,2),' MB') as index_sizefrom information_schema.tables where TABLE_SCHEMA = 'TestDB'group by TABLE_NAMEorder by data_length desc; |
以上语句测试有效，注意替换以上的TestDB为数据库名
执行结果如下，截取部分
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mysql> select TABLE_NAME, concat(truncate(data_length/1024/1024,2),' MB') as data_size,concat(truncate(index_length/1024/1024,2),' MB') as index_sizefrom information_schema.tables where TABLE_SCHEMA = 'shdx'group by TABLE_NAMEorder by data_length desc;+--------------------------------+-----------+------------+| TABLE_NAME | data_size | index_size |+--------------------------------+-----------+------------+| tab_automatch_log | 499.08 MB | 95.03 MB || tab_fundlog201505 | 101.96 MB | 19.13 MB || tab_online | 63.49 MB | 14.32 MB || tab_game_record201505 | 56.97 MB | 30.93 MB || tab_user | 52.17 MB | 12.31 MB || dc_user_action_active | 39.94 MB | 0.00 MB || tab_gametime_day | 37.22 MB | 21.50 MB || tab_fundlog | 35.12 MB | 6.45 MB || tab_game_record | 19.85 MB | 10.56 MB || tab_feeaccount | 19.17 MB | 10.75 MB || tab_userinfo | 18.78 MB | 6.33 MB || tab_userfund | 17.91 MB | 9.51 MB || tab_click_count | 14.63 MB | 1.75 MB || tab_achievement_log | 10.51 MB | 1.36 MB || tab_gameloginlog201505 | 5.78 MB | 0.75 MB || tab_gametime | 4.29 MB | 3.16 MB || tab_gameloginlog | 3.83 MB | 0.50 MB || tab_login_log201505 | 2.79 MB | 0.67 MB || tab_system_operatelog | 2.74 MB | 0.19 MB || tab_singleplay_score | 2.10 MB | 0.28 MB || tab_game_record201301 | 1.93 MB | 1.08 MB || tab_game_score_shddz | 1.61 MB | 0.80 MB || tab_game_score_ddz | 1.39 MB | 0.66 MB || tab_game_score_shmj | 1.34 MB | 0.67 MB || tab_game_xyzdx_getscore_detail | 1.28 MB | 0.21 MB | |
参考链接
http://www.jb51.net/article/40789.htm