Verpasst

September 2018

JavaZone

September 12-13 — Oslo, Norway

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.

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

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