This post was originally published on this site

March 29th 2017 a group of 35 database developers competed in the Oracle Dev Gym SQL Annual Championship for the top ranked players of 2016. They worked their little grey cells hard for 45 minutes over 5 quizzes that I had tried to make extra hard for them.

The results have now been made public on the Oracle Dev Gym site, so I’d like here to add my congratulations to everyone who made it to the championship and especially to those who tops the results list.


Congratulations first and foremost to our top-ranked players:

I am very impressed by an amazing 100% correct score by Stelios Vlasopoulos. That’s the first time a player has gotten 100% correct in a championship with my quizzes – I really do try to make them extra hard, but obviously not so hard that it is (quite) impossible to solve them. Thanks, Stelios, for proving it possible ūüėČ

Hopefully the participants of the championship found the quizzes entertaining, challenging and educational. And for those who were not able to participate in the championship, you can take the quizzes yourself and see if you can match Stelios.

Thank you to every player who keeps on playing my SQL quizzes – I hope you all find them fun and that you maybe learn a little too. And a great big thank you to Vitaliy Lyanchevskiy (Elic) for tirelessly reviewing my quizzes and finding all my errors – wouldn’t be possible without him.

I’ll try to keep the quizzes coming in 2017, if you’ll keep playing them.

Championship 2016 Results

You will find below the rankings for the Oracle SQL Annual Championship for 2016. The number next to the player’s name is the number of times that player has participated in a championship. Below the table of results for this championship, you will find another list showing the championship history of each of these players.

Rank Name Country Total Time % Correct Total Score
1 Stelios Vlasopoulos (4) No Country Set 31 m 100% 6925
2 Pavel Zeman (3) Czech Republic 24 m 91% 6350
3 Chad Lee (4) United States 35 m 89% 6158
4 TZ (2) Lithuania 21 m 87% 6065
5 seanm95 (4) United States 31 m 83% 5726
6 Andrey Zaytsev (3) Russia 32 m 83% 5720
7 Aleksei Davletiarov (2) Russia 34 m 83% 5710
8 mentzel.iudith (4) Israel 42 m 83% 5681
9 Tony Winn (2) Australia 33 m 81% 5566
10 NielsHecker (4) Germany 39 m 81% 5542
11 ivan_blanarik (4) Slovakia 40 m 81% 5537
12 Chase (4) Canada 29 m 77% 5283
13 krzysioh (4) Poland 32 m 77% 5270
14 Rimantas Adomauskas (2) Lithuania 28 m 74% 5136
15 Pavel_Noga (3) Czech Republic 43 m 74% 5074
16 Vyacheslav Stepanov (4) No Country Set 13 m 70% 4898
17 Karel_Prech (2) No Country Set 39 m 70% 4793
18 swesley_perth (3) Australia 16 m 68% 4732
19 Sandra99 (3) Italy 31 m 68% 4675
20 _tiki_4_ (4) Germany 20 m 66% 4568
21 berkeso (2) Hungary 20 m 66% 4567
22 Michal P. (2) Poland 30 m 66% 4529
23 Mike Tessier (1) Canada 30 m 64% 4378
24 JasonC (2) United Kingdom 38 m 64% 4347
25 MarkM. (1) Germany 38 m 64% 4345
26 Maxim Borunov (3) Russia 43 m 64% 4328
27 Hertha Rettinger (3) Germany 23 m 62% 4256
28 AnnaO (4) Ireland 13 m 60% 4145
29 Sachi (4) India 15 m 60% 4139
30 Henry_A (3) Czech Republic 15 m 60% 4138
31 Andrii Dorofeiev (3) Ukraine 32 m 60% 4070
32 mcelaya (1) Spain 42 m 60% 4031
33 tonyC (3) United Kingdom 36 m 57% 3906
34 Eric Levin (4) United States 30 m 55% 3778
35 Marek Sobierajski (2) Poland 22 m 47% 3211

Championship Performance History

After each name, the quarter in which he or she played, and the ranking in that championship.

Name History
Stelios Vlasopoulos 2013:26th, 2014:7th, 2015:2nd, 2016:1st
Pavel Zeman 2014:2nd, 2015:1st, 2016:2nd
Chad Lee 2013:30th, 2014:3rd, 2015:19th, 2016:3rd
TZ 2015:36th, 2016:4th
seanm95 2013:29th, 2014:15th, 2015:8th, 2016:5th
Andrey Zaytsev 2014:1st, 2016:6th
Aleksei Davletiarov 2016:7th
mentzel.iudith 2013:4th, 2014:20th, 2015:5th, 2016:8th
Tony Winn 2013:3rd, 2016:9th
NielsHecker 2013:6th, 2014:4th, 2015:14th, 2016:10th
ivan_blanarik 2013:14th, 2014:11th, 2016:11th
Chase 2013:10th, 2014:32nd, 2015:13th, 2016:12th
krzysioh 2013:24th, 2014:38th, 2015:9th, 2016:13th
Rimantas Adomauskas 2013:15th, 2016:14th
Pavel_Noga 2014:30th, 2015:11th, 2016:15th
Vyacheslav Stepanov 2013:20th, 2014:22nd, 2016:16th
Karel_Prech 2015:37th, 2016:17th
swesley_perth 2013:11th, 2014:9th, 2016:18th
Sandra99 2014:24th, 2015:18th, 2016:19th
_tiki_4_ 2014:27th, 2016:20th
berkeso 2015:22nd, 2016:21st
Michal P. 2015:33rd, 2016:22nd
Mike Tessier 2016:23rd
JasonC 2016:24th
MarkM. 2016:25th
Maxim Borunov 2015:4th, 2016:26th
Hertha Rettinger 2013:35th, 2014:34th, 2016:27th
AnnaO 2013:27th, 2014:13th, 2015:30th, 2016:28th
Sachi 2013:8th, 2014:40th, 2015:16th, 2016:29th
Henry_A 2015:15th, 2016:30th
Andrii Dorofeiev 2014:23rd, 2015:31st, 2016:31st
mcelaya 2016:32nd
tonyC 2014:26th, 2015:34th, 2016:33rd
Eric Levin 2013:18th, 2014:21st, 2015:17th, 2016:34th
Marek Sobierajski 2015:21st, 2016:35th