Verpasst

Oktober 2018

phpCE

27.-28. Oktober — Prag, Tschechien

Modern SQL: Evolution of a dinosaur

SQL has evolved considerably in recent years. The purely relational dogma was already abandoned in 1999. What followed was continuous extension through the incorporation of handy features to address problems that are hard to solve with relational algebra. Today, SQL is Turing complete, can process graphs, has semantic understanding of XML and JSON, is able to automatically keep historic versions, can analyze time series using regular expressions and much more.

This session walks through the SQL standards from 1999 to the current version of 2016. It demonstrates some selected features on the basis of common problems and compares the traditional SQL-92 solution to the modern SQL approach. Of course, the presentation also shows how long these features are supported by various databases so that you immediately know whether the shown solutions work in your environment or not. Teaser: MySQL and MariaDB have got huge updated lately.

In this session, developers and software architects of all levels gain a better understanding where SQL is today so that they are able to make more educated decisions. A lot has happened since SQL-92!

Reaktionen:

SQL Saturday #772

27. Oktober — München, Deutschland

Epidemic Plague: Superficial Indexing

Proper indexing is a very time and cost-effective way to improve SQL performance. Yet hardly anyone gets it right or knows how different ways to write a query affects indexing and performance. In this session I'll explain why this knowledge is sparse and what developers can do about it. Finally we will go through the most important indexing mistakes by example and discuss them during a short live quiz with the audience.

Data Science meetup Crunch edition

25. Oktober — Budapest, Ungarn

The Mother of all Query Languages: SQL in Modern Times

Did you know the purely relational dogma of SQL was already abandoned in 1999?

The last SQL standard that was limited to the relational idea was SQL-92. From SQL:1999 onwards, the SQL language was extended with non-relational operations and non-relational data structures. As much as this move was discussed at that time, it took decades until database vendors caught up with this idiomatic change. Many SQL users haven’t heard of it until today.

The year 2018 finally marks the turning point. With the release of MySQL 8.0 all major SQL dialects finally support the most important non-relational concepts of SQL.

This talk provides the big picture on the evolution of the SQL standard. You will see that SQL has changed as much as our requirements have changed over the past decades.

Reaktionen:

  • Tweet von Julianna Göbölös-Sz.: Great and easy to understand presentation about less known SQL features by @ModernSQL at the Budapest Data Science Meetup! Thanks for making SQL cool!

WebCamp Zagreb

5.-6. Oktober — Zagreb, Kroatien

Modernes SQL: Evolution of a dinosaur

Most developers use SQL like 25 years ago. A lot has changed since then. Modern SQL makes every developer's life easier.

SQL has evolved considerably in recent years. The purely relational dogma was already abandoned in 1999. What followed was continuous extension through the incorporation of handy features to address problems that are hard to solve with relational algebra. Today, SQL is Turing complete, can process graphs, has semantic understanding of XML and JSON, is able to automatically keep historic versions, can analyze time series using regular expressions and much more.

This session walks through the SQL standards from 1999 to the current version of 2016. It demonstrates some selected features on the basis of common problems and compares the traditional SQL-92 solution to the modern SQL approach. Of course, the presentation also shows how long these features are supported by various databases so that you immediately know whether the shown solutions work in your environment or not.

In this session, developers and software architects of all levels gain a better understanding where SQL is today so that they are able to make more educated decisions. A lot has happened since SQL-92!

Reaktionen:

  • zeljko mikic auf joind.in: Well structured talk, and there was a real moment of magic, with explanation on oppened slide in a matter of seconds with an example.

  • Stanko Krtalic Rusendic auf joind.in: The speaker is clear, eloquent and extremely funny to listen to. I was afraid to blink not to miss a second of the talk. Only the highest prases for this talk.

  • Domagoj Štrekelj auf joind.in: A definite highlight of the conference, an eye-opening and entertaining talk unlike any other.

  • Lies alle Kommentare auf joind.in. Gesamtbewertung: 5.0/5 (n=9) (am 2018-10-07).

  • Dainius auf Twitter: Falling in love with sql again, here in #wczg. @MarkusWinand is like a cupid of sql world. Thanks Markus, great talk.

  • Luka Kladaric auf Twitter: "All employees MUST CHOP OFF HANDS after using OFFSET!" "What's wrong with OFFSET? It's slow. And its wrong."

  • Pim Elshoff auf Twitter: Look at all the cool "new" stuff MySQL can't do :D

  • Pim Elshoff auf Twitter: Impressed with @MarkusWinand. A "boring" subject delivered with humor, sense, and a hint of intimidation...

  • Sasa Blagojevic ‏auf Twitter: @MarkusWinand talk about SQL at @webcampzagreb is both awesome and self-deprecating. Now I’m aware how outdated I am when it comes to SQL, it’s equivalent to using php 4

  • Luka Kladaric ‏auf Twitter: "If you see a self-join, kill it. All employees must wash hands after performing a self-join." @MarkusWinand #wczg I'm calling it -- the best talk of the conference.

  • Durchschnittsbewertung von 4.66 (von 5) von 125 Stimmabgaben.

September 2018

26.-28. September — Krakau, Polen

DevConf 2018

Modernes SQL: Evolution eines Dinosauriers

SQL has evolved considerably in recent years. The purely relational dogma was already abandoned in 1999. What followed was continuous extension through the incorporation of handy features to address problems that are hard to solve with relational algebra. Today, SQL is Turing complete, can process graphs, has semantic understanding of XML and JSON, is able to automatically keep historic versions, can analyze time series using regular expressions and much more.

This session walks through the SQL standards from 1999 to the current version of 2016. It demonstrates some selected features on the basis of common problems and compares the traditional SQL-92 solution to the modern SQL approach. Of course, the presentation also shows how long these features are supported by various databases so that you immediately know whether the shown solutions work in your environment or not.

In this session, developers and software architects of all levels gain a better understanding where SQL is today so that they are able to make more educated decisions. A lot has happened since SQL-92!

Reaktionen:

25.-27. September — Mainz, Deutschland

BASTA!

Modernes SQL: Evolution eines Dinosauriers

SQL hat sich in den letzten Jahren erheblich weiterentwickelt. Denn das rein relationale Dogma wurde bereits im Jahr 1999 aufgegeben. Es folgte eine stetige Erweiterung um praktikable Lösungen für Probleme, die mit der relationalen Algebra nur sehr umständlich zu lösen sind. Heute kann man mit SQL sogar in so manchem NoSQL-System sehr komplexe Auswertungen schneller, effizienter und vor allem korrekter umsetzen, als mit anderen Programmiersprachen. Seit SQL-92 hat sich einiges getan!

Bewertungen (n=13; in Klammer, Durchschnitt der Konferenz)

  • Quality of the presentation: 4.0 (4.1)

  • Speaker’s knowledge of the subject: 4.5 (4.6)

Kommentare in der Konferenz-App:

  • praxisnahe

  • einige interessante Infos für die tägliche Arbeit. Top!

September 12-13 — Oslo, Norway

JavaZone

Modern SQL: Evolution of a dinosaur

SQL has evolved considerably in recent years. The purely relational dogma was already abandoned in 1999. What followed was continuous extension through the incorporation of handy features to address problems that are hard to solve with relational algebra. Today, SQL is Turing complete, can process graphs, has semantic understanding of XML and JSON, is able to automatically keep historic versions, can analyze time series using regular expressions and much more.

This session walks through the SQL standards from 1999 to the current version of 2016. It demonstrates some selected features on the basis of common problems and compares the traditional SQL-92 solution to the modern SQL approach. Of course, the presentation also shows how long these features are supported by various databases so that you immediately know whether the shown solutions work in your environment or not.

In this session, developers and software architects of all levels gain a better understanding where SQL is today so that they are able to make more educated decisions. A lot has happened since SQL-92!

Medien: Video bei Vimeo, Folien.

Reaktionen:

August 2018

25.-26. August — Hochschule Bonn-Rhein-Sieg

FrOSCon

Volkskrankheit „stiefmütterliche SQL-Indizierung“

SQL-Indizierung gehört zur Softwareentwicklung. Warum Entwickler den Kopf nicht länger in den Sand stecken sollten zeigt dieser Vortrag.

Dieser Vortrag geht kurz auf die häufigste Ursache schlechter SQL-Performance ein – die Index/Query-Inkompatibilität – und erklärt, wie es dazu kommen konnte. Der Hauptteil des Vortrages widmet sich der Lösung dieses Problems auf äußerst unterhaltsame Weise: In einem Live-Quiz mit dem Publikum werden die wichtigsten Beispiele der Index/Query-Inkompatibilität demonstriert und gezeigt, wie sich die Performance mit einfachen Mitteln um Faktoren verbessern lässt.

Aufzeichnung: Beim CCC, bei YouTube

Reaktionen:

Juli 2018

Prag PostgreSQL Meetup – Prag, Tschechische Republik – 2018-07-30 (6pm)

How PostgreSQL’s SQL dialect stays ahead of its competitors

PostgreSQL has the best support of standard SQL features among its competitors. But the two free main competitors (MySQL and MariaDB) have recently started to embrace modern SQL too and closed some of the major gaps they have had for decades: Window functions (OVER) and common table expressions (CTEs, WITH) are now supported by both, MySQL and MariaDB. MariaDB even rushes ahead by adding so-called “system versioned tables” in version 10.3 released in May 2018.

This presentation provides an overview how PostgreSQL keeps up being the most advanced open source database. I will present some interesting features introduced to PostgreSQL recently but also give an outlook to features that are (hopefully) coming with PostgreSQL 11 and beyond.

Event auf Meetup.com ⇗

PostgreSQL España – Madrid, Spanien – 2018-07-18

How PostgreSQL’s SQL dialect stays ahead of its competitors

PostgreSQL has the best support of standard SQL features among its competitors. But the two free main competitors (MySQL and MariaDB) have recently started to embrace modern SQL too and closed some of the major gaps they have had for decades: Window functions (OVER) and common table expressions (CTEs, WITH) are now supported by both, MySQL and MariaDB. MariaDB even rushes ahead by adding so-called “system versioned tables” in version 10.3 released in May 2018.

This presentation provides an overview how PostgreSQL keeps up being the most advanced open source database. I will present some interesting features introduced to PostgreSQL recently but also give an outlook to features that are (hopefully) coming with PostgreSQL 11 and beyond.

Aufzeichnung: YouTube (slides).

Reaktionen:

PGConf UK – London, United Kingdom – 2018-07-03

Standard SQL features where PostgreSQL beats its competitor

The SQL standard has more than 4300 pages and hundreds of optional features. The number of features offered by different products varies vastly. PostgreSQL implements a relatively large number of them.

In this session I present some standard SQL features that work in PostgreSQL, but not in other popular open-source databases. But when it comes to standard conformance, PostgreSQL doesn’t even need to fear the comparison to its commercial competitors: PostgreSQL also supports a few useful standard SQL features that don’t work in any of the three most popular commercial SQL databases.

Reaktionen:

Juni 2018

AOUG Anwenderkonferenz – Wien, Österreich – 2018-06-12

Row Pattern Matching — Datenanalyse auf neuem Level

Das Erkennen von Mustern in Zeitreihen wurde durch die MATCH_RECOGNIZE-Klausel in Oracle 12c erheblich vereinfacht. Leider ist diese Klausel unter Entwicklern noch wenig bekannt und wird daher kaum genutzt. Dieser Vortrag führt in das Thema ein und zeigt einige typische (und weniger typische) Anwendungen, die sich mit MATCH_RECOGNIZE wesentlich einfacher lösen lassen als mit anderen SQL-Funktionen.

May 2018

PgCon.org – Ottawa, Canada – 2018-05-31 - 2018-06-01

Standard SQL Gap Analysis: Standard SQL features where PostgreSQL lags behind its competitors

PostgreSQL supports an impressive number of standard SQL features in an outstanding quality. Yet there remain some cases where other databases exceed PostgreSQL’s capabilities in regard to standard SQL conformance.

This session presents the gaps found during an in-depth comparison of selected standard SQL features among six popular SQL databases. The selected features include, among others, window functions and common tables expressions—both of them were recently introduced to MySQL and MariaDB.

The comparison uses a set of conformance tests I use for my website modern-sql.com. These tests are based on the SQL:2016 standard and attempt to do a rather complete test of the requirements set out in the standard. This includes the correct declared type of expressions as well as the correct SQLSTATE in case of errors (teaser: nobody seems to care about SQLSTATE).

This presentation covers two aspects: (1) features not supported by PostgreSQL but by other databases; (2) features available in PostgreSQL that are less complete or conforming as in other databases.

Folien: https://modern-sql.com/slides/pgcon-2018-gap-analysis.pdf

Aufnahme: bei YouTube.

GeeCON – Krakau, Polen – 2018-05-10

Modern SQL: Evolution of a dinosaur

Mit diesen Themen: WITH, WITH RECURSIVE, OVER, XMLTABLE, FETCH FIRST, OFFSET, System Versioning, LISTAGG.

Video Aufzeichung: folgt

Reaktionen:

Axel Fontaine on Twitter

Excellent talk on SQL by @MarkusWinand

Vom Publikum in der GeeCON 2018 App mit 4.84 von 5 Sternen bewertet

April 2018

Grazer Linux Tage – Graz, Österreich – 2018-04-28

Modernes SQL in Open-Source Datenbanken

Mit diesen Themen: WITH, WITH RECURSIVE, GROUPING SETS, FILTER, BOOLEAN tests, OVER, System Versioning.

Aufzeichnung: YouTube, ccc.de.

März 2018

Voxxed Days Vienna – Wien, Österreich – 2018-03-12 – 2018-03-13

Modern SQL: A lot has changed since SQL-92

Mit diesen Themen: WITH, WITH RECURSIVE, GROUPING SETS, FILTER, OVER, FETCH FIRST, OFFSET, System Versioning, MATCH_RECOGNIZE

Aufzeichnung: YouTube.

Reaktionen:

@blalasaadri auf Twitter

After watching the talk by @MarkusWinand at #VoxxedVienna I am aware that I don't know #SQL.

@michaeltecourt auf Twitter

Great talk about modern SQL, so much knowledge packed in a 1h session

@GottfriedSzing auf Twitter

Maybe that's the reason I haven't seen FILTER in the wild #voxxedvienna

Mit Markus Winand verbinden

Markus Winand auf LinkedInMarkus Winand auf XINGMarkus Winand auf Twitter