Basic operation of MySQL database: Create/Drop database, table addition, deletion, modification and query

1. Start the service

DOS command

net start mysql 回车

2. Log in to the MySQL database

 mysql -uroot -proot 回车

3. View the database in MySQL

show databases;

4. Create a database

create database 数据库名;

After the creation is completed, check whether the creation is successful again through the show databases; command

5. Delete the database

drop database 数据库名;

6, create a table

Note: Before operating data, "use database"
use database name;
create table

create table 表名(
 			字段1 数据类型(长度) ,
 			字段2 数据类型(长度) not null,
 			PRIMARY KEY(字段1)
 			);``


Reference case screenshot
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7. Add a single record in the table

insert into table name (field 1, field 2, ...) values ​​(value 1, value 2, ...);
Note that each value corresponds to the type of the field.
Reference case screenshot:
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8. Query

select * from table name;
refer to the screenshot (continue to the previous step to see if data is added)
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9. Add multiple records

insert into table name (field 1, field 2, ...) values ​​(value A1, value A2, ...), (value B1, value B2, ...);
refer to the case screenshot
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10. Delete

delete from table name;
refer to the case screenshot
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11. Modify

update table name set field 1=value 1, field 2=value 2,...;
Note: each value and field type corresponds
to the screenshot of the reference case
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Origin blog.csdn.net/yj19880214/article/details/114081542