命令行练习
sunziheng@sunziheng-virtual-machine:~$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 17
Server version: 5.7.23-0ubuntu0.16.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select user,host,password from mysql.user;
ERROR 1054 (42S22): Unknown column 'password' in 'field list'
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| py01 |
| sys |
+--------------------+
6 rows in set (0.00 sec)
mysql> select user,host,password from mysql.user;
ERROR 1054 (42S22): Unknown column 'password' in 'field list'
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select user,host from mysql.user;
+------------------+-----------+
| user | host |
+------------------+-----------+
| debian-sys-maint | localhost |
| mysql.session | localhost |
| mysql.sys | localhost |
| root | localhost |
+------------------+-----------+
4 rows in set (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| py01 |
| sys |
+--------------------+
6 rows in set (0.00 sec)
mysql> use mydb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+----------------+
| Tables_in_mydb |
+----------------+
| classed |
| student |
| tb01 |
| tb_date |
| tb_num |
| tb_str |
+----------------+
6 rows in set (0.00 sec)
mysql> desc tb01;
+-------+------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | NULL | |
| name | varchar(6) | YES | | NULL | |
| age | int(11) | YES | | NULL | |
+-------+------------+------+-----+---------+-------+
3 rows in set (0.00 sec)
mysql> insert into tb01(name,age) values('szh',18);
ERROR 1364 (HY000): Field 'id' doesn't have a default value
mysql> show create table tb01;
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tb01 | CREATE TABLE `tb01` (
`id` int(11) NOT NULL,
`name` varchar(6) DEFAULT NULL,
`age` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
mysql> select *from tb01;
+----+-------+------+
| id | name | age |
+----+-------+------+
| 9 | szh06 | 22 |
+----+-------+------+
1 row in set (0.00 sec)
mysql> delete from tb01 where age=22;
Query OK, 1 row affected (0.00 sec)
mysql> insert into tb01 values(9,'szh',12);
Query OK, 1 row affected (0.00 sec)
mysql> \q
Bye
sunziheng@sunziheng-virtual-machine:~$ mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
sunziheng@sunziheng-virtual-machine:~$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 22
Server version: 5.7.23-0ubuntu0.16.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
mysql>
mysql>
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| py01 |
| sys |
+--------------------+
6 rows in set (0.00 sec)
mysql> use mydb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+----------------+
| Tables_in_mydb |
+----------------+
| classed |
| student |
| tb01 |
| tb_date |
| tb_num |
| tb_str |
+----------------+
6 rows in set (0.00 sec)
mysql> drop table tb01;
Query OK, 0 rows affected (0.01 sec)
mysql> show tables;
+----------------+
| Tables_in_mydb |
+----------------+
| classed |
| student |
| tb_date |
| tb_num |
| tb_str |
+----------------+
5 rows in set (0.00 sec)
mysql> show tables;
+----------------+
| Tables_in_mydb |
+----------------+
| classed |
| student |
| tb01 |
| tb_date |
| tb_num |
| tb_str |
+----------------+
6 rows in set (0.00 sec)
mysql> select *from tb01;
+----+------+------+
| id | name | age |
+----+------+------+
| 9 | szh | 12 |
+----+------+------+
1 row in set (0.00 sec)
mysql> select database();
+------------+
| database() |
+------------+
| mydb |
+------------+
1 row in set (0.00 sec)
mysql> show tables;
+----------------+
| Tables_in_mydb |
+----------------+
| classed |
| student |
| tb01 |
| tb_date |
| tb_num |
| tb_str |
+----------------+
6 rows in set (0.00 sec)
mysql> show create table student;
+---------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+---------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| student | CREATE TABLE `student` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(16) NOT NULL,
`age` tinyint(3) unsigned DEFAULT NULL,
`sex` enum('w','m') NOT NULL DEFAULT 'w',
`classid` int(10) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+---------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
mysql> show create table student\G;
*************************** 1. row ***************************
Table: student
Create Table: CREATE TABLE `student` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(16) NOT NULL,
`age` tinyint(3) unsigned DEFAULT NULL,
`sex` enum('w','m') NOT NULL DEFAULT 'w',
`classid` int(10) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
1 row in set (0.00 sec)
ERROR:
No query specified
mysql> insert into student values(null,'szh01',18,'m',1),
-> (null,'daojian',34,'m',1),
-> (null,'lainxisheng',22,'m',1),
-> (null,'luoshen',33,'w',2),
-> (null,'sunziheng02',16,'m',2),
-> (null,'yangmi',34,'w',3),
-> (null,'nazha',28,'w',1);
Query OK, 7 rows affected (0.01 sec)
Records: 7 Duplicates: 0 Warnings: 0
mysql> select *from student;
+----+-------------+------+-----+---------+
| id | name | age | sex | classid |
+----+-------------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 7 | nazha | 28 | w | 1 |
+----+-------------+------+-----+---------+
7 rows in set (0.00 sec)
mysql> insert into student values(null,'szh03',25,'m',4),
-> (null,'hongchenxue',38,'w',4),
-> (null,'tianji',66,'m',4),
-> (null,'dimin',44,'m',4),
-> (null,'junfengtian',88,'m',4),
-> (null,'feichangjun',55,'m',5),
-> (null,'zhongshanjun',46,'m',5);
Query OK, 7 rows affected (0.00 sec)
Records: 7 Duplicates: 0 Warnings: 0
mysql> seleect *from student;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'seleect *from student' at line 1
mysql> select *from student;
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 7 | nazha | 28 | w | 1 |
| 8 | szh03 | 25 | m | 4 |
| 9 | hongchenxue | 38 | w | 4 |
| 10 | tianji | 66 | m | 4 |
| 11 | dimin | 44 | m | 4 |
| 12 | junfengtian | 88 | m | 4 |
| 13 | feichangjun | 55 | m | 5 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
14 rows in set (0.00 sec)
mysql> select name,age from where age >30;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where age >30' at line 1
mysql> select name,age from student where age >30;
+--------------+------+
| name | age |
+--------------+------+
| daojian | 34 |
| luoshen | 33 |
| yangmi | 34 |
| hongchenxue | 38 |
| tianji | 66 |
| dimin | 44 |
| junfengtian | 88 |
| feichangjun | 55 |
| zhongshanjun | 46 |
+--------------+------+
9 rows in set (0.00 sec)
mysql> select * from student where in(1,3,5,6,7);
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'in(1,3,5,6,7)' at line 1
mysql> select * from student where id in(1,3,5,6,7);
+----+-------------+------+-----+---------+
| id | name | age | sex | classid |
+----+-------------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 7 | nazha | 28 | w | 1 |
+----+-------------+------+-----+---------+
5 rows in set (0.00 sec)
mysql> select *from student where between 16 and 50;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'between 16 and 50' at line 1
mysql> select *from student where age between 16 and 50;
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 7 | nazha | 28 | w | 1 |
| 8 | szh03 | 25 | m | 4 |
| 9 | hongchenxue | 38 | w | 4 |
| 11 | dimin | 44 | m | 4 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
11 rows in set (0.00 sec)
mysql> select * from student where like name sz%;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like name sz%' at line 1
mysql> select * from student like name sz%;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like name sz%' at line 1
mysql> select * from student like name 'sz%';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like name 'sz%'' at line 1
mysql> select * from student where like name 'sz%';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like name 'sz%'' at line 1
mysql> select * from student where like name '%sz';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like name '%sz'' at line 1
mysql> select * from student where name like '%sz';
Empty set (0.00 sec)
mysql> select * from student where name like 'sz%';
+----+-------+------+-----+---------+
| id | name | age | sex | classid |
+----+-------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 8 | szh03 | 25 | m | 4 |
+----+-------+------+-----+---------+
2 rows in set (0.01 sec)
mysql> select * from student where name like '%n';
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 2 | daojian | 34 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 11 | dimin | 44 | m | 4 |
| 12 | junfengtian | 88 | m | 4 |
| 13 | feichangjun | 55 | m | 5 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
6 rows in set (0.00 sec)
mysql> select * from student where name like '%n%';
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 7 | nazha | 28 | w | 1 |
| 9 | hongchenxue | 38 | w | 4 |
| 10 | tianji | 66 | m | 4 |
| 11 | dimin | 44 | m | 4 |
| 12 | junfengtian | 88 | m | 4 |
| 13 | feichangjun | 55 | m | 5 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
12 rows in set (0.00 sec)
mysql> select * from student where name like '----';
Empty set (0.01 sec)
mysql> select * from student where name like '_____';
+----+-------+------+-----+---------+
| id | name | age | sex | classid |
+----+-------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 7 | nazha | 28 | w | 1 |
| 8 | szh03 | 25 | m | 4 |
| 11 | dimin | 44 | m | 4 |
+----+-------+------+-----+---------+
4 rows in set (0.00 sec)
mysql> select *from student where name regexp '^[a-z0-9]{5}';
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 7 | nazha | 28 | w | 1 |
| 8 | szh03 | 25 | m | 4 |
| 9 | hongchenxue | 38 | w | 4 |
| 10 | tianji | 66 | m | 4 |
| 11 | dimin | 44 | m | 4 |
| 12 | junfengtian | 88 | m | 4 |
| 13 | feichangjun | 55 | m | 5 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
14 rows in set (0.00 sec)
mysql> select *from student where name regexp '^[a-z0-9]{5}$';
+----+-------+------+-----+---------+
| id | name | age | sex | classid |
+----+-------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 7 | nazha | 28 | w | 1 |
| 8 | szh03 | 25 | m | 4 |
| 11 | dimin | 44 | m | 4 |
+----+-------+------+-----+---------+
4 rows in set (0.00 sec)
mysql> select max(age) from student;
+----------+
| max(age) |
+----------+
| 88 |
+----------+
1 row in set (0.00 sec)
mysql> select min(age) from student;
+----------+
| min(age) |
+----------+
| 16 |
+----------+
1 row in set (0.00 sec)
mysql> select max(age),min(age),avg(age) from student;
+----------+----------+----------+
| max(age) | min(age) | avg(age) |
+----------+----------+----------+
| 88 | 16 | 39.0714 |
+----------+----------+----------+
1 row in set (0.00 sec)
mysql> select count(*) from student;
+----------+
| count(*) |
+----------+
| 14 |
+----------+
1 row in set (0.00 sec)
mysql> delete from student where id = 7;
Query OK, 1 row affected (0.00 sec)
mysql> select count(*) from student;
+----------+
| count(*) |
+----------+
| 13 |
+----------+
1 row in set (0.00 sec)
mysql> select age, count(*) from student;
ERROR 1140 (42000): In aggregated query without GROUP BY, expression #1 of SELECT list contains nonaggregated column 'mydb.student.age'; this is incompatible with sql_mode=only_full_group_by
mysql> select count(*) from student where age;
+----------+
| count(*) |
+----------+
| 13 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from student where sex='m';
+----------+
| count(*) |
+----------+
| 10 |
+----------+
1 row in set (0.00 sec)
mysql> select *from student;
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 1 | szh01 | 18 | m | 1 |
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 8 | szh03 | 25 | m | 4 |
| 9 | hongchenxue | 38 | w | 4 |
| 10 | tianji | 66 | m | 4 |
| 11 | dimin | 44 | m | 4 |
| 12 | junfengtian | 88 | m | 4 |
| 13 | feichangjun | 55 | m | 5 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
13 rows in set (0.00 sec)
mysql> select count(*) from student where classid;
+----------+
| count(*) |
+----------+
| 13 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from student where classid=1;
+----------+
| count(*) |
+----------+
| 3 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from student where classid=2;
+----------+
| count(*) |
+----------+
| 2 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from student where classid=5;
+----------+
| count(*) |
+----------+
| 2 |
+----------+
1 row in set (0.00 sec)
mysql> select sex from student group by sex;
+-----+
| sex |
+-----+
| w |
| m |
+-----+
2 rows in set (0.00 sec)
mysql> select classid from student group by classid;
+---------+
| classid |
+---------+
| 1 |
| 2 |
| 3 |
| 4 |
| 5 |
+---------+
5 rows in set (0.00 sec)
mysql> select sex,count(*) from student group by sex;
+-----+----------+
| sex | count(*) |
+-----+----------+
| w | 3 |
| m | 10 |
+-----+----------+
2 rows in set (0.00 sec)
mysql> select count() from student;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') from student' at line 1
mysql> select classid from student order by classid;
+---------+
| classid |
+---------+
| 1 |
| 1 |
| 1 |
| 2 |
| 2 |
| 3 |
| 4 |
| 4 |
| 4 |
| 4 |
| 4 |
| 5 |
| 5 |
+---------+
13 rows in set (0.00 sec)
mysql> select classid,sex,count(*) from group by classid,sex;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group by classid,sex' at line 1
mysql> select classid,sex,count(*) from student group by classid,sex;
+---------+-----+----------+
| classid | sex | count(*) |
+---------+-----+----------+
| 1 | m | 3 |
| 2 | w | 1 |
| 2 | m | 1 |
| 3 | w | 1 |
| 4 | w | 1 |
| 4 | m | 4 |
| 5 | m | 2 |
+---------+-----+----------+
7 rows in set (0.00 sec)
mysql> select *from student order by classid asc,age desc;
+----+--------------+------+-----+---------+
| id | name | age | sex | classid |
+----+--------------+------+-----+---------+
| 2 | daojian | 34 | m | 1 |
| 3 | lainxisheng | 22 | m | 1 |
| 1 | szh01 | 18 | m | 1 |
| 4 | luoshen | 33 | w | 2 |
| 5 | sunziheng02 | 16 | m | 2 |
| 6 | yangmi | 34 | w | 3 |
| 12 | junfengtian | 88 | m | 4 |
| 10 | tianji | 66 | m | 4 |
| 11 | dimin | 44 | m | 4 |
| 9 | hongchenxue | 38 | w | 4 |
| 8 | szh03 | 25 | m | 4 |
| 13 | feichangjun | 55 | m | 5 |
| 14 | zhongshanjun | 46 | m | 5 |
+----+--------------+------+-----+---------+
13 rows in set (0.00 sec)
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ ls
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ mysqldump -u root -p mydb >mydb.sql
Enter password:
mysqldump: Got error: 1045: Access denied for user 'root'@'localhost' (using password: YES) when trying to connect
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ mysqldump -u root -p mydb >mydb.sql
Enter password:
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ ls
mydb.sql
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ vim mydb.sql
程序 'vim' 已包含在下列软件包中：
* vim
* vim-gnome
* vim-tiny
* vim-athena
* vim-athena-py2
* vim-gnome-py2
* vim-gtk
* vim-gtk-py2
* vim-gtk3
* vim-gtk3-py2
* vim-nox
* vim-nox-py2
请尝试：sudo apt install <选定的软件包>
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ vi mydb.sql
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ mysqldump -u root -p mydb tb01 >tb01.sql
Enter password:
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ ls
mydb.sql tb01.sql
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ vi tb01.sql
sunziheng@sunziheng-virtual-machine:~/mysqlFiles$ mysql -u root -p mydb
mysql>
mysql> use mydb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+----------------+
| Tables_in_mydb |
+----------------+
| classed |
| student |
| tb01 |
| tb_date |
| tb_num |
| tb_str |
+----------------+
6 rows in set (0.00 sec)
mysql>
mysql>
mysql> \s
--------------
mysql Ver 14.14 Distrib 5.7.23, for Linux (x86_64) using EditLine wrapper
Connection id: 25
Current database: mydb
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.7.23-0ubuntu0.16.04.1 (Ubuntu)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: latin1
Db characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /var/run/mysqld/mysqld.sock
Uptime: 2 days 23 hours 31 min 10 sec
Threads: 1 Questions: 439 Slow queries: 0 Opens: 197 Flush tables: 1 Open tables: 85 Queries per second avg: 0.001
--------------
mysql> create database test02;
Query OK, 1 row affected (0.00 sec)
mysql> use test02;
Database changed
mysql> \s
--------------
mysql Ver 14.14 Distrib 5.7.23, for Linux (x86_64) using EditLine wrapper
Connection id: 25
Current database: test02
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.7.23-0ubuntu0.16.04.1 (Ubuntu)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: latin1
Db characterset: latin1
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /var/run/mysqld/mysqld.sock
Uptime: 2 days 23 hours 32 min 34 sec
Threads: 1 Questions: 447 Slow queries: 0 Opens: 197 Flush tables: 1 Open tables: 85 Queries per second avg: 0.001
