Data Manipulation with MySQL - ethz.ch€¦ · Data retrieval No persistent effects on the database Describes the data, actual retrieval operations handled by the database management

Data Manipulation with MySQLEvangelos Pournaras, Izabela Moise, Dirk Helbing

Evangelos Pournaras, Izabela Moise, Dirk Helbing 1

About MySQL

• Open source SQL database system• Dual license - GPL + commercial license• Relational database management system• Integration with Java, Python, PHP, Perl, etc.


Language Elements

ClausesExpressionsPredicates

QueriesStatementsInsignificant white space


Queries

• Most common operation

• Data retrieval

• No persistent effects on the database

• Describes the data, actual retrieval operations handled by thedatabase management system

• subqueries, e.g. in a WHERE predicate

SELECT column FROM table WHERE predicateGROUP BY column HAVING predicate ORDER BY column


Data Manipulation

Data Manipulation Language (DML)

• INSERT

• UPDATE

• DELETE

• MERGE


Data Types


Numeric Data Types


String Data Types


Data & Time Data Types


Spatial Data Types


Operators


Arithmetic Operators


Comparison Operators


Logical Operators


MySQL Demonstration


MAMP Software Package

Easy all-in installationhttp://www.mamp.info/en/


http://www.mamp.info/en/

NervousNet Database

SENSOR_0AccelerometerSENSOR_1BatterySENSOR_2GyroscopeSENSOR_3HumiditySENSOR_4LightSENSOR_5Magnetic

SENSOR_6ProximitySENSOR_7TemperatureSENSOR_8NoiseSENSOR_9PressureSENSOR_aConnectivitySENSOR_bBluetooth Beacon


SQL Statements I

>SHOW DATABASES>SHOW TABLES>DESCRIBE SENSOR_0>CREATE DATABASE TESTDB>SELECT UUID,RecordTime,Rms FROM SENSOR_8 WHERE Rms>20000>SELECT UUID,RecordTime,Rms FROM SENSOR_8WHERE Rms BETWEEN 10000 AND 20000>SELECT UUID,RecordTime,Rms FROM SENSOR_8WHERE Rms>20000 UNION SELECT UUID,RecordTime,TemperatureFROM SENSOR_7 WHERE Temperature>36.0>SELECT DISTINCT UUID FROM SENSOR_8 WHERE Rms>15000


SQL Statements II

>CREATE TABLE table_01(id INT)>INSERT INTO table_01(id) VALUES(2)>UPDATE table_01 SET id=200 WHERE id=1;>CREATE TABLE table_02(id INTEGER,info VARCHAR(50),date DATE NOT NULL,PRIMARY KEY (id, info));>INSERT INTO table_02 (id, info, date)VALUES (1, ’Hello’, ’1990-01-05’)


Proposed Literature

Mysql 5.5 reference manual.Technical report, MySQL AB, 2015.


What is next?

• Visualization and plotting


Data Manipulation with MySQL - ethz.ch€¦ · Data retrieval No persistent effects on the database Describes the data, actual retrieval operations handled by the database management

Documents