Mysql database learning-1. get the original data-MySQL

Mysql database learning-1, get the original data bitsCN.com

Mysql database learning-1. get the original data

Show databasesshow tablesinformation_schemashow tables statement output does not contain the temporary table view all the databases on the server> show databases view the create database statement of the given database> show create database db_name view the data table of the default database or the data table of the given database> show tables from db_name view the create table statement of the data table of the given Database> show create table tbl_name view the column or index information of the data table> show columns from tbl_name> show index from tbl_name the following statement is the same as the show columns from tbl_name statement> describe tbl_name> explain tbl_name query Check the descriptive information of the default database or given data table> show table status from db_name to limit the output range of the show statement. you can also change the like statement to where, the where statement does not change the number of columns, but only the number of output rows. if the column name is a reserved word, it must be enclosed by backquotes (').> Show columns from tbl_name like '% s'> show columns from tbl_name like' _ s'> show columns from tbl_name where 'key' = 'pri'

Mysqlshow command

Mysqldump command

Database managed by the server

Mysqlshow

(If the host is rejected, the host is provided. the user name and password are as follows. if the host has changed the default port, the port must also be provided in uppercase P-P)> mysqlshow mysql-h localhost-u root-p list data tables of a given database> mysqlshow db_name view data column information in a given data table> mysqlshow db_name tbl_name view index information in a given data table> mysqlshow -- keys db_name tbl_name: view the description of the data table in the given Database> mysqlshow -- status db_name: list the structure information of the data table in the given Database (if the -- no-data parameter is not added, all tables are listed simultaneously. data in)> mysqldump -- no-data db_name [tbl_name]-u root-p | more

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