Each MySQL has a library information_schema, which has a table tables stores information about all database tables, so you can see the database size and table size from this tableQuerying database
How to use commands to view the Mysql database size bitsCN.com
How to use commands to view the Mysql database size
1. enter the specified schema database (storing the information of other databases)
1
Use information_schema
2. query the size
The database size remains unchanged after the delete record of mysql is deleted, and mysqldelete
This problem occurs when conditions are followed after the DELETE operation.
Delete from table_name where Condition
After the data is deleted, the
/**9. SQL Server method for querying database size **/--Headquarters request every one months, to obtain an ERP database growth size.-- Original Source: http://www.jb51.net/article/30993.htmselect db _name ( database_id as [Database name] [Name]
When you create a database in SQL Server you can specify the initial size of the database file, for example, we set the size of the newly created database mydb to 1024MBWell, the database you built will actually take up about 1024MB of disk
This article introduces several methods for querying the database size in SQL.
This article introduces several methods for querying the database size in SQL.
First: (cricket)
The Code is as follows:
Alter table tb
1. check the mysql database size SELECTsum (DATA_LENGTH) + sum (INDEX_LENGTH) FROMinformation_schema.TABLESwhereTABLE_SCHEMA database name. The result is in bytes, except 1024 for K, except 1048576 (1024*1024) for M. 2. view the last mysql
Analysis on the reason why the RMAN backup file is much larger than the database size
When talking with the customer, the customer proposed that the database size is only 40 GB, but the file backed up by RMAN is 80 GB, And the DUMP file exported by
#查看每个数据库占用的空间:Select Table_schema "Database Name", sum (data_length + index_length)/1024/1024 "database Size in MB" from Informatio N_schema. TABLES GROUP by Table_schema;#查看数据库下每个表和索引占用的空间:Select table_name as "Tables", Round (((data_length + index_
How to obtain the database size bitsCN.com in mysql
1. view the mysql database sizeSELECT sum (DATA_LENGTH) + sum (INDEX_LENGTH)FROM information_schema.TABLES where TABLE_SCHEMA = 'database name ';The result is in bytes. except 1024 for K, except 10
MySQL query database size
Step 1: First open the Mysql Command line and choose Start Menu> program> MySql-Command line client, as shown in Figure 1-1:
Figure 1-1
Step 2: Enter use information_schema 1-2 in the command:
Figure 1-2
Step 3: view the
To know the size of each database, proceed as follows:1. Access to the INFORMATION_SCHEMA database (information on other databases)Use INFORMATION_SCHEMA;2, query the size of all data:Select Concat (Round (sum (data_length/1024/1024), 2), ' MB ') as
phpMyAdmin The default Import database file size is 2M, but the general Web site's database exported files will exceed this limit, to import more than 2M database files need to manually modify the php.ini configuration file! Recent projects
1. View MySQL Database sizeSELECT sum (data_length) +sum (index_length)From INFORMATION_SCHEMA. TABLES where table_schema= ' database name ';The resulting result is in bytes, except 1024 for K, except 1048576 (=1024*1024) for M.2. View the last
consider this issue in two ways:>> First is the single file size that the operating system uses to support the file system, such as:Linux 2.2-intel 32-bit (ext2 file system) maximum support 2GBLinux 2.4+ (ext3 file system) support 4TBWin32 (FAT32
MySQL Command database size other blogs on the Internet are also related!
But they are not perfect! Here, let's make him perfect!
Besides, it's easy to forget. It's easy to write.
1. Enter the specified schema database (storing the information of
1. Enter the information_schema database (information of other databases is stored) useinformation_schema; 2. query the size of all data: selectconcat (round (sum (data_length10241024), 2), 'mb ') asdatafromtables; 3. view the size of a specified
How to use SQL commands to view the Mysql database size bitsCN.com
To know the size of each database, follow these steps:1. enter the information_schema database (storing information about other databases)Use information_schema;2. query the size of
View the MySQL database size
1. Enter the specified schema database (storing information about other databases)
Use information_schema
2. query the size of all data
select Concat (round (sum (data_length/1024/1024 ), 2), 'mb '
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.