1. 查看该数据库实例下所有库大小，得到的结果是以MB为单位
mysql> select table_schema,sum(data_length)/1024/1024 as data_length,sum(index_length)/1024/1024 as index_length,sum(data_length+index_length)/1024/1024 as sum from information_schema.tables; +--------------------+---------------+--------------+---------------+ | table_schema | data_length | index_length | sum | +--------------------+---------------+--------------+---------------+ | information_schema | 2734.92757511 | 86.27539063 | 2821.20296574 | +--------------------+---------------+--------------+---------------+
2、查看该实例下各个库大小
mysql> select table_schema, sum(data_length+index_length)/1024/1024 as total_mb, sum(data_length)/1024/1024 as data_mb, sum(index_length)/1024/1024 as index_mb, count(*) as tables, curdate() as today from information_schema.tables group by table_schema order by 2 desc; +--------------------+---------------+---------------+-------------+--------+------------+ | table_schema | total_mb | data_mb | index_mb | tables | today | +--------------------+---------------+---------------+-------------+--------+------------+ | data_1234567890 | 2820.59610939 | 2734.39689064 | 86.19921875 | 65 | 2015-11-02 | | mysql | 0.60579967 | 0.53744030 | 0.06835938 | 14 | 2015-11-02 | | information_schema | 0.00781250 | 0.00000000 | 0.00781250 | 35 | 2015-11-02 | +--------------------+---------------+---------------+-------------+--------+------------+
3、查看单个库的大小
mysql> select concat(truncate(sum(data_length)/1024/1024,2),'mb') as data_size, concat(truncate(sum(max_data_length)/1024/1024,2),'mb') as max_data_size, concat(truncate(sum(data_free)/1024/1024,2),'mb') as data_free, concat(truncate(sum(index_length)/1024/1024,2),'mb') as index_size from information_schema.tables where table_schema = 'erongtu_tyb2014'; +-----------+------------------+-----------+------------+ | data_size | max_data_size | data_free | index_size | +-----------+------------------+-----------+------------+ | 2734.40mb | 83483426815.99mb | 14.06mb | 86.19mb | +-----------+------------------+-----------+------------+
4、查看单个表的状态
mysql> show table status from data_1234567890 where name = 'data_1234567890_ss' G
*************************** 1. row ***************************
Name: data_1234567890_ss
Engine: InnoDB
Version: 10
Row_format: Compact
Rows: 840065
Avg_row_length: 477
Data_length: 401473536
Max_data_length: 0
Index_length: 0
Data_free: 6291456
Auto_increment: 882251
Create_time: 2015-09-07 17:24:18
Update_time: NULL
Check_time: NULL
Collation: utf8_general_ci
Checksum: NULL
Create_options:
Comment:
1 row in set (0.00 sec)
5、查看单库下所有表的状态
mysql> select table_name, (data_length/1024/1024) as data_mb , (index_length/1024/1024) as index_mb, ((data_length+index_length)/1024/1024) as all_mb, table_rows from information_schema.tables where table_schema = 'data_1234567890'; +---------------------------+---------------+-------------+---------------+------------+ | table_name | data_mb | index_mb | all_mb | table_rows | +---------------------------+---------------+-------------+---------------+------------+ | ss_daccount | 0.23437500 | 0.10937500 | 0.34375000 | 4481 | | ss_daccount_log | 2.48262787 | 0.58496094 | 3.06758881 | 27248 | | ss_daccount_type | 0.00025558 | 0.00195313 | 0.00220871 | 8 | | ss_daccountlog | 221.61502457 | 22.66113281 | 244.27615738 | 1045462 | | ss_dactives | 0.00178146 | 0.00195313 | 0.00373459 | 7 | | ss_dadmin | 0.00268173 | 0.00195313 | 0.00463486 | 19 | | ss_dadmin_log | 0.36599731 | 0.05175781 | 0.41775513 | 5191 | | ss_dadmin_nav | 0.01562500 | 0.00000000 | 0.01562500 | 46 | | ss_dadmin_role | 0.01562500 | 0.01562500 | 0.03125000 | 5 | | ss_dadvertisement | 0.07812500 | 0.00000000 | 0.07812500 | 486 | | ss_dadvertisement_click | 382.87500000 | 0.00000000 | 382.87500000 | 1023350 | | ss_dadvertisement_content | 0.10937500 | 0.01562500 | 0.12500000 | 105 | | ss_dapplication | 3.23010635 | 0.02441406 | 3.25452042 | 1859 | | ss_dapplication_bak | 2.25843048 | 0.01269531 | 2.27112579 | 738 | | ss_dapplication_comment | 0.88685226 | 0.05566406 | 0.94251633 | 5454 | | ss_dapplication_material | 0.00187683 | 0.00195313 | 0.00382996 | 16 | | ss_dapplication_user | 0.90316010 | 0.10839844 | 1.01155853 | 8861 | | ss_darea | 1.05803299 | 0.88769531 | 1.94572830 | 45051 | | ss_dauthentication | 0.00072861 | 0.00195313 | 0.00268173 | 13 | | ss_dbbs_relatedlink | 0.01562500 | 0.00000000 | 0.01562500 | 12 | | ss_dborrow | 0.04732895 | 0.00390625 | 0.05123520 | 153 | | ss_dborrow_collection | 27.61576080 | 13.99023438 | 41.60599518 | 221169 | | ss_dborrow_lz | 0.00000000 | 0.00097656 | 0.00097656 | 0 | | ss_dborrow_tender | 24.62931824 | 18.27050781 | 42.89982605 | 147411 | | ss_dcash | 6.40177155 | 1.97949219 | 8.38126373 | 42807 | | ss_dcp_block | 0.04687500 | 0.01562500 | 0.06250000 | 37 | | ss_dcp_item | 0.09375000 | 0.00000000 | 0.09375000 | 134 | | ss_dedu_member | 0.01562500 | 0.00000000 | 0.01562500 | 13 | | ss_dinfo_article | 78.76256561 | 1.19433594 | 79.95690155 | 10038 | | ss_dinfo_channel | 0.01562500 | 0.00000000 | 0.01562500 | 56 | | ss_dinfo_comment | 0.32812500 | 0.00000000 | 0.32812500 | 1206 | | ss_dinfo_nav | 0.01562500 | 0.00000000 | 0.01562500 | 27 | | ss_dinfo_p2pdata | 0.90237427 | 0.29101563 | 1.19338989 | 29569 | | ss_dinfo_p2pdata_0 | 0.04687500 | 0.00000000 | 0.04687500 | 275 | | ss_dinfo_photo | 0.23437500 | 0.00000000 | 0.23437500 | 71 | | ss_dinfo_project | 0.06250000 | 0.00000000 | 0.06250000 | 67 | | ss_dinfo_seekdata | 35.53404236 | 0.64062500 | 36.17466736 | 5002 | | ss_dinfo_tagname | 0.01562500 | 0.00000000 | 0.01562500 | 18 | | ss_dinfo_testinfo | 0.01562500 | 0.00000000 | 0.01562500 | 21 | | ss_dinfo_video | 0.91273117 | 0.00781250 | 0.92054367 | 207 | | ss_djiao | 0.01562500 | 0.00000000 | 0.01562500 | 3 | | ss_dliberty | 3.79615784 | 0.27734375 | 4.07350159 | 23108 | | ss_dliberty_item | 3.08350754 | 1.24414063 | 4.32764816 | 51113 | | ss_dloan | 0.00000000 | 0.00390625 | 0.00390625 | 0 | | ss_dmarke | 0.01973343 | 0.00390625 | 0.02363968 | 125 | | ss_dmedal | 0.00000000 | 0.00097656 | 0.00097656 | 0 | | ss_dmember_comment | 0.00995636 | 0.00195313 | 0.01190948 | 87 | | ss_dmembers | 6.73762321 | 0.33203125 | 7.06965446 | 30717 | | ss_dmembers_identity | 0.10503769 | 0.00976563 | 0.11480331 | 784 | | ss_dnewyear | 0.00308609 | 0.00195313 | 0.00503922 | 32 | | ss_drecharge | 29.13045883 | 10.23925781 | 39.36971664 | 221220 | | ss_dsalon_click | 0.00586700 | 0.00195313 | 0.00782013 | 31 | | ss_dsalon_comment | 0.07812500 | 0.00000000 | 0.07812500 | 213 | | ss_dsalon_content | 0.14062500 | 0.00000000 | 0.14062500 | 653 | | ss_dsalon_ticket | 0.00093079 | 0.00195313 | 0.00288391 | 20 | | ss_dsignin | 0.37500000 | 0.00000000 | 0.37500000 | 7177 | | ss_dtemplate | 0.15721893 | 0.03808594 | 0.19530487 | 2838 | | ss_dwd_answers | 2.51562500 | 0.00000000 | 2.51562500 | 5420 | | ss_dwd_classify | 0.01562500 | 0.00000000 | 0.01562500 | 12 | | ss_dwd_collection | 0.01562500 | 0.00000000 | 0.01562500 | 2 | | ss_dwd_questions | 1.51562500 | 0.00000000 | 1.51562500 | 3614 | | ss_dwget | 1894.69999695 | 13.02929688 | 1907.72929382 | 1187574 | | ss_dzhuanti_bolanhui | 0.00419235 | 0.00195313 | 0.00614548 | 20 | | click | 0.00000000 | 0.00097656 | 0.00097656 | 0 | | ss_account | 0.14062500 | 0.07812500 | 0.21875000 | 1871 | +---------------------------+---------------+-------------+---------------+------------+