Import and export database related tables from the win command line

The command line exports the database related tables as sql file

grammar ：mysqldump -h[ Where is the host computer IP] -u[ user name ] -p[ password ] [ Database to export ]>[ Export path / file name .sql]

Tips ： No need to enter the database

No password for the first line of code （ Second line input ）
Example ：mysqldump -hlocalhost -uroot -p spring>d:/qqq.sql

  If there is no error message, it means success

Command line import SQL File to MySQL in

1、 Sign in mysql

grammar ：mysql -u[ user name ] -p[ password ];

Example ：mysql -uroot -proot

 2、 Access to database （ If not, you need to create ）

Create database Syntax ：create database [ Database name ] charset='utf8'

Example ：use spring;

3、 Import data table

grammar ：source [ Path / file name .sql]

Example ：source d:/qqq.sql;

 

  Possible errors

ERROR 1046 (3D000): No database selected

reason ： No database selected （use [ Database name ]）

ERROR 1231 (42000): Variable 'foreign_key_checks' can't be set to the value of 'NULL'

reason ： Memory limit （ modify my.ini file max_allowed_packet=1024M）