How to use navicat for mysql command line operations?

The following describes how to use Navicat to perform mysql command line operations.

Recommended tutorial: MySQL database introductory tutorial

1. Open Navicat

2. Click the [Tools] menu and select [Command Line Interface]

3. At this time, you have entered the mysql command line state

Extended information: MySQL basic operation commands

Database operation

Show all databases

mysql> show databases;(注意:最后有个 s)

Create database

mysql> create database test;

Connect to the database

mysql> use test;

View the currently used database

mysql> select database();

Table information contained in the current database

mysql> show tables; (注意:最后有个 s)

Delete database
##

mysql> drop database test;

Table operation

Note: Use "use " before operation to connect to a database.

Create table

Command:

create table

( [,..< ;Field namen> ]);

Example:

mysql> create table MyClass(
> id int(4) not null primary key auto_increment,
> name char(20) not null,
> sex int(4) not null default '0',
> degree double(16,2));

Get table structure

Command :

desc table name, or show columns from table name

Example:

mysql> describe MyClass
mysql> desc MyClass;
mysql> show columns from MyClass;

Delete table

Command :

drop table

For example: Delete the table named MyClass

mysql> drop table MyClass;

Insert data

Command:

insert into

[( [,.. ])] values ​​( value 1 )[, ( value n ) ]

Example:

mysql> insert into MyClass values(1,'Tom',96.45),(2,'Joan',82.99), (2,'Wang', 96.59);

Query the data in the table

Query all rows

mysql> select * from MyClass;

Query the first few rows Data

For example: View the first 2 rows of data in the table MyClass

mysql> select * from MyClass order by id limit 0,2;

or

mysql> select * from MyClass limit 0,2;

Delete the data in the table

Command:

delete from table name where expression

For example: delete the record numbered 1 in the table MyClass

mysql> delete from MyClass where id=1;

Modify the data in the table

Command:

update table name set field=new value,...where condition

mysql> update MyClass set name='Mary' where id=1;

Add fields in the table

Command :

alter table table name add field type other;

For example: a field passtest is added to the table MyClass, the type is int(4), the default value is 0

mysql> alter table MyClass add passtest int(4) default '0'

Change table name

Command:

rename table original table name to new table name;

For example: change the name of table MyClass to YouClass

mysql> rename table MyClass to YouClass;

Update field content

Command:

update table name set field name = new content

update table Name set field name = replace(field name, 'old content', 'new content');

For example: add 4 spaces in front of the article

update article set content=concat('    ', content);

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