mysql> 12 simple but staple commands

Edit at:  2019-12-28 16:52:42

• 1.mysql -u+username -p+password  --> connect mysql
• 2.use databasename  --> select database
• 3.show databases  --> show all databases in your mysql server
• 4.show tabels  --> show all tables which are in selected database
• 5.create database database_name [charset charset_name]  -->create database
• 6.drop database database_name  --> delete database which named database_name
• 7.create table table_name(

　　　var1 type,

　　　var2 type)   --> create table table_name and its inside structure

• 8.drop table table_name  --> delete table which called table_name
• 9.rename table old_table_name to new_tabl_name  --> change your table's name
• 10.insert into table_name values (key1, value1), (key2, value2)  -->insert dataline to a table
• 11.truncate table_name  --> clear a table with a efficient way
• 12.select * from table_name  --> show all datalines of table table_name