统计mysql数据库、表大小_MySQL
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 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 | +---------------------------+---------------+-------------+---------------+------------+
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1377
52
How does Go language implement the addition, deletion, modification and query operations of the database?
Mar 27, 2024 pm 09:39 PM
Go language is an efficient, concise and easy-to-learn programming language. It is favored by developers because of its advantages in concurrent programming and network programming. In actual development, database operations are an indispensable part. This article will introduce how to use Go language to implement database addition, deletion, modification and query operations. In Go language, we usually use third-party libraries to operate databases, such as commonly used sql packages, gorm, etc. Here we take the sql package as an example to introduce how to implement the addition, deletion, modification and query operations of the database. Assume we are using a MySQL database.
How does Hibernate implement polymorphic mapping?
Apr 17, 2024 pm 12:09 PM
Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.
iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos
Jul 18, 2024 am 05:48 AM
Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps
An in-depth analysis of how HTML reads the database
Apr 09, 2024 pm 12:36 PM
HTML cannot read the database directly, but it can be achieved through JavaScript and AJAX. The steps include establishing a database connection, sending a query, processing the response, and updating the page. This article provides a practical example of using JavaScript, AJAX and PHP to read data from a MySQL database, showing how to dynamically display query results in an HTML page. This example uses XMLHttpRequest to establish a database connection, send a query and process the response, thereby filling data into page elements and realizing the function of HTML reading the database.
How to handle database connection errors in PHP
Jun 05, 2024 pm 02:16 PM
To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.
Detailed tutorial on establishing a database connection using MySQLi in PHP
Jun 04, 2024 pm 01:42 PM
How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())
Tips and practices for handling Chinese garbled characters in databases with PHP
Mar 27, 2024 pm 05:21 PM
PHP is a back-end programming language widely used in website development. It has powerful database operation functions and is often used to interact with databases such as MySQL. However, due to the complexity of Chinese character encoding, problems often arise when dealing with Chinese garbled characters in the database. This article will introduce the skills and practices of PHP in handling Chinese garbled characters in databases, including common causes of garbled characters, solutions and specific code examples. Common reasons for garbled characters are incorrect database character set settings: the correct character set needs to be selected when creating the database, such as utf8 or u
How to use database callback functions in Golang?
Jun 03, 2024 pm 02:20 PM
Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.
