Mysql general commands:
1.win+r
2. Enter cmd
3. Enter Mysql -u root -p
4. Enter the password
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All database queries:
show databases; ==> show all databases
Query OK, 1 row affected (0.00 sec): Success is indicated
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Create a database:
create datebase mydb2（库名）default character set utf8;
Display database creation statement:
show create database mydb2;
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Database delete statement:
drop database demo1;
Modify database statements:
alter database emp default character set gbk（gbk字符集）;
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