Skip to main content

Players for PL/SQL Challenge Championship for 2016

The following players will be invited to participate in the PL/SQL Challenge Championship for 2016, currently scheduled to take place on 23 March at 14:00 UTC.

The number in parentheses after their names are the number of championships in which they have already participated.

Congratulations to all listed below on their accomplishment and best of luck in the upcoming competition!

Name Rank Qualification Country
SteliosVlasopoulos (13) 1 Top 50 Belgium
siimkask (16) 2 Top 50 Estonia
mentzel.iudith (16) 3 Top 50 Israel
li_bao (4) 4 Top 50 Russia
James Su (11) 5 Top 50 Canada
ivan_blanarik (10) 6 Top 50 Slovakia
NielsHecker (17) 7 Top 50 Germany
Rakesh Dadhich (8) 8 Top 50 India
Karel_Prech (6) 9 Top 50 No Country Set
Marek Sobierajski (1) 10 Top 50 Poland
Rytis Budreika (4) 11 Top 50 Lithuania
_tiki_4_ (9) 12 Top 50 Germany
krzysioh (5) 13 Top 50 Poland
Chad Lee (13) 14 Top 50 United States
João Borges Barreto (6) 15 Top 50 Portugal
Andrey Zaytsev (5) 16 Top 50 Russia
coba (1) 17 Top 50 Netherlands
patch72 (3) 18 Top 50 Netherlands
Kuvardin Evgeniy (2) 19 Top 50 Russia
VictorD (3) 20 Top 50 Russia
Vyacheslav Stepanov (15) 21 Top 50 No Country Set
Maxim Borunov (3) 22 Top 50 Russia
tonyC (2) 23 Top 50 United Kingdom
JustinCave (13) 24 Top 50 United States
Chase (2) 25 Top 50 Canada
Joaquin_Gonzalez (10) 26 Top 50 Spain
Pavel_Noga (4) 27 Top 50 Czech Republic
seanm95 (3) 28 Top 50 United States
syukhno (0) 29 Top 50 Ukraine
tonywinn (5) 30 Top 50 Australia
JasonC (1) 31 Top 50 United Kingdom
Andrii Dorofeiev (0) 32 Top 50 Ukraine
Sachi (1) 33 Top 50 India
ratte2k4 (0) 34 Top 50 Germany
Alexey Ponomarenko (1) 35 Top 50 No Country Set
PZOL (2) 36 Top 50 Hungary
Otto Palenicek (0) 37 Top 50 Germany
Jānis Baiža (10) 38 Top 50 Latvia
JeroenR (10) 39 Top 50 Netherlands
Rimantas Adomauskas (3) 40 Top 50 Lithuania
Henry_A (3) 41 Top 50 Czech Republic
Sherry (2) 42 Top 50 Czech Republic
ted (0) 43 Top 50 United Kingdom
MarkM. (0) 44 Top 50 Germany
YuanT (11) 45 Top 50 United States
kbentley1 (1) 46 Top 50 United States
swesley_perth (2) 47 Top 50 Australia
Talebian (3) 48 Top 50 Netherlands
mcelaya (1) 49 Top 50 Spain
berkeso (0) 50 Top 50 Hungary

Comments

Post a Comment

Popular posts from this blog

Running out of PGA memory with MULTISET ops? Watch out for DISTINCT!

A PL/SQL team inside Oracle made excellent use of nested tables and MULTISET operators in SQL, blending data in tables with procedurally-generated datasets (nested tables).  All was going well when they hit the dreaded: ORA-04030: out of process memory when trying to allocate 2032 bytes  They asked for my help.  The error occurred on this SELECT: SELECT  *    FROM header_tab trx    WHERE (generated_ntab1 SUBMULTISET OF trx.column_ntab)       AND ((trx.column_ntab MULTISET             EXCEPT DISTINCT generated_ntab2) IS EMPTY) The problem is clearly related to the use of those nested tables. Now, there was clearly sufficient PGA for the nested tables themselves. So the problem was in executing the MULTISET-related functionality. We talked for a bit about dropping the use of nested tables and instead doing everything in SQL, to avoid the PGA error. That would, however require lots of wo...
4 comments
Read more

How to Pick the Limit for BULK COLLECT

This question rolled into my In Box today: In the case of using the LIMIT clause of BULK COLLECT, how do we decide what value to use for the limit? First I give the quick answer, then I provide support for that answer Quick Answer Start with 100. That's the default (and only) setting for cursor FOR loop optimizations. It offers a sweet spot of improved performance over row-by-row and not-too-much PGA memory consumption. Test to see if that's fast enough (likely will be for many cases). If not, try higher values until you reach the performance level you need - and you are not consuming too much PGA memory.  Don't hard-code the limit value: make it a parameter to your subprogram or a constant in a package specification. Don't put anything in the collection you don't need. [from Giulio Dottorini] Remember: each session that runs this code will use that amount of memory. Background When you use BULK COLLECT, you retrieve more than row with each fetch, ...
4 comments
Read more

PL/SQL 101: Save your source code to files

PL/SQL is a database programming language. This means that your source code is compiled into  and executed from within the Oracle Database. There are many fantastic consequences of this fact, many of which are explored in Bryn Llewellyn's Why Use PL/SQL? whitepaper. But this also can mean that developers see the database as the natural repository for the original source code , and this is a bad mistake to make. It's not the sort of mistake any JavaScript or Java or php developer would ever make, because that code is not compiled into the database (well, you can  compile Java into the database, but that's not where 99.99% of all Java code lives). But it's a mistake that apparently too many Oracle Database developers make. So here's the bottom line: Store each PL/SQL program unit in its own file . Use a source code control system to manage those files. Compile them into the database as needed for development and testing. In other words: you should never kee...
16 comments
Read more