MySQL: Unterschied zwischen den Versionen

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=Installation=
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*[[Mysql allgmein]]
root@asuka:~# aptitude install mysql-server mysql-client
+
*[[Mysql an Grafana]]
 
+
*[[Mysql Password reset]]
=Login=
+
*[[Mysql Kompakt]]
root@asuka:~# mysql --user root -h localhost -p
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*[[Mysql Logging]]
Enter password: XXXXXX
+
*[[Mysql ODBC]]
Welcome to the MySQL monitor.  Commands end with ; or \g.
 
Your MySQL connection id is 48
 
Server version: 5.1.41-3ubuntu12 (Ubuntu)
 
 
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
 
 
mysql>
 
 
 
=Status überprüfen=
 
mysql> status;
 
--------------
 
mysql  Ver 14.14 Distrib 5.1.41, for debian-linux-gnu (i486) using readline 6.1
 
 
Connection id: 48
 
SSL: Not in use
 
Current pager: stdout
 
Using outfile: ''
 
Using delimiter: ;
 
Server version: 5.1.41-3ubuntu12 (Ubuntu)
 
Protocol version: 10
 
Connection: Localhost via UNIX socket
 
Client characterset: latin1
 
Server characterset: latin1
 
UNIX socket: /var/run/mysqld/mysqld.sock
 
Uptime: 41 min 4 sec
 
 
Threads: 1  Questions: 207  Slow queries: 0  Opens: 476  Flush tables: 1  Open tables: 64  Queries per second avg: 0.84
 
--------------
 
 
 
=Hilfe aufrufen=
 
mysql> help contents;
 
You asked for help about help category: "Contents"
 
For more information, type 'help <item>', where <item> is one of the following
 
categories:
 
    Account Management
 
    Administration
 
    Compound Statements
 
    Data Definition
 
    Data Manipulation
 
    Data Types
 
    Functions
 
    Functions and Modifiers for Use with GROUP BY
 
    Geographic Features
 
    Language Structure
 
    Plugins
 
    Table Maintenance
 
    Transactions
 
    User-Defined Functions
 
    Utility
 
 
 
=Datenbanken anzeigen=
 
mysql> show databases;
 
+--------------------+
 
| Database          |
 
+--------------------+
 
| information_schema |
 
| mysql              |
 
+--------------------+
 
2 rows in set (0.00 sec)
 
 
 
=Datenbank auswählen=
 
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
 
 
 
=Datenbank erstellen=
 
mysql> create database world;
 
Query OK, 1 row affected (0.00 sec)
 
mysql> show databases;
 
+--------------------+
 
| Database          |
 
+--------------------+
 
| information_schema |
 
| mysql              |
 
| world              |
 
+--------------------+
 
3 rows in set (0.00 sec)
 
 
 
=Datenbank mit Daten von Backup füllen=
 
root@asuka:~# mysql world < world.sql  -p
 
Enter password:
 
 
 
=Datenbank wechseln=
 
mysql> use world
 
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
 
 
 
=Tabellen einer Datenbank anzeigen=
 
mysql> show tables;
 
+-----------------+
 
| Tables_in_world |
 
+-----------------+
 
| City            |
 
| Country        |
 
| CountryLanguage |
 
+-----------------+
 
3 rows in set (0.00 sec)
 
 
 
=Tabellenbeschreibung anzeigen=
 
mysql> describe City;
 
+-------------+----------+------+-----+---------+----------------+
 
| Field      | Type    | Null | Key | Default | Extra          |
 
+-------------+----------+------+-----+---------+----------------+
 
| ID          | int(11)  | NO  | PRI | NULL    | auto_increment |
 
| Name        | char(35) | NO  |    |        |                |
 
| CountryCode | char(3)  | NO  |    |        |                |
 
| District    | char(20) | NO  |    |        |                |
 
| Population  | int(11)  | NO  |    | 0      |                |
 
+-------------+----------+------+-----+---------+----------------+
 
5 rows in set (0.00 sec)
 
 
 
=Einträge anzeigen=
 
mysql> select * from City;
 
+----+------------------+-------------+---------------+------------+
 
| ID | Name            | CountryCode | District      | Population |
 
+----+------------------+-------------+---------------+------------+
 
|  1 | Kabul            | AFG        | Kabol        |    1780000 |
 
|  2 | Qandahar        | AFG        | Qandahar      |    237500 |
 
|  3 | Herat            | AFG        | Herat        |    186800 |
 
|  4 | Mazar-e-Sharif  | AFG        | Balkh        |    127800 |
 
|  5 | Amsterdam        | NLD        | Noord-Holland |    731200 |
 
(...)
 
 
 
=Nur die ersten 10 Einträge anzeigen=
 
mysql> select * from City limit 10;
 
+----+----------------+-------------+---------------+------------+
 
| ID | Name          | CountryCode | District      | Population |
 
+----+----------------+-------------+---------------+------------+
 
|  1 | Kabul          | AFG        | Kabol        |    1780000 |
 
|  2 | Qandahar      | AFG        | Qandahar      |    237500 |
 
|  3 | Herat          | AFG        | Herat        |    186800 |
 
|  4 | Mazar-e-Sharif | AFG        | Balkh        |    127800 |
 
|  5 | Amsterdam      | NLD        | Noord-Holland |    731200 |
 
|  6 | Rotterdam      | NLD        | Zuid-Holland  |    593321 |
 
|  7 | Haag          | NLD        | Zuid-Holland  |    440900 |
 
|  8 | Utrecht        | NLD        | Utrecht      |    234323 |
 
|  9 | Eindhoven      | NLD        | Noord-Brabant |    201843 |
 
| 10 | Tilburg        | NLD        | Noord-Brabant |    193238 |
 
+----+----------------+-------------+---------------+------------+
 
10 rows in set (0.00 sec)
 
 
 
=Anzeigen von Einträgen mit einer Bedingung=
 
mysql> select * from City where Population > 5000000;
 
+------+-------------------+-------------+-------------------+------------+
 
| ID  | Name              | CountryCode | District          | Population |
 
+------+-------------------+-------------+-------------------+------------+
 
|  206 | S�o Paulo        | BRA        | S�o Paulo        |    9968485 |
 
|  207 | Rio de Janeiro    | BRA        | Rio de Janeiro    |    5598953 |
 
|  456 | London            | GBR        | England          |    7285000 |
 
|  608 | Cairo            | EGY        | Kairo            |    6789479 |
 
|  939 | Jakarta          | IDN        | Jakarta Raya      |    9604900 |
 
(...)
 
 
 
=Umstellen der Zeichenkodierung=
 
mysql> SET NAMES 'utf8';
 
Query OK, 0 rows affected (0.00 sec)
 
 
 
Weil:
 
mysql> select * from City where Population > 5000000;
 
+------+---------------------+-------------+---------------------+------------+
 
| ID  | Name                | CountryCode | District            | Population |
 
+------+---------------------+-------------+---------------------+------------+
 
|  206 | '''São''' Paulo          | BRA        | '''São''' Paulo          |    9968485 |
 
|  207 | Rio de Janeiro      | BRA        | Rio de Janeiro      |    5598953 |
 
(...)
 

Aktuelle Version vom 11. März 2023, 09:20 Uhr