Andrej Pashchenko 🇺🇦 💙💛 @Andrej_SQL
Database developer, data engineer, Oracle Ace Pro ♠ Born in Ukraine Views are my own blog.sqlora.com Joined November 2017-
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MERGE ... RETURNING is now supported in #Oracle23ai. In my view, it deserves more visibility in the documentation — it wasn’t easy to find. Even LLMs still claim it doesn’t exist (some even invent error codes). #SQL #MERGE @oracleace blog.sqlora.com/en/merge-and-d…
Ten years after my first post on the quirks of MERGE and ORA-30926, I took a fresh look at how Oracle 23ai handles it. Clearer error messages, improved diagnostics, and fewer unnecessary restarts. Read the new blog post #Oracle23ai #SQL #MERGE @oracleace blog.sqlora.com/en/ora-30926-i…
Did you know that refreshing HCC-compressed materialized views with atomic_refresh=true can multiply storage usage over time? Small details can have massive impacts. Read the new blog post. #Exadata #Oracle #HCC @oracleace blog.sqlora.com/en/when-compre…
Get rows in one table with no match in another with either c1 NOT IN ( SELECT c2 ... ) NOT EXISTS ( SELECT ... where c1 = c2 ) These perform the same in Oracle #SQL ...unless C2 includes NULL values => NOT IN returns no rows! @Andrej_SQL explores blog.sqlora.com/en/not-in-vs-n…
My @AccentureDACH colleague @Andrej_SQL is going to talk about partition exhange at the @Hroug_Croatia #HROUG2024 conference @oracleace
Partition Exchange Reloaded by @Andrej_SQL at #hroug2024.
Everything you should know about block corruptions in #Oracledatabase with @CGohmannDE at #hroug2024
On this #JoelKallmanDay, I would like to follow up on my last year's post, comparing #SQL’s NOT IN and NOT EXISTS, focusing on their usage, interchangeability and some myths about performance differences. blog.sqlora.com/en/not-in-vs-n… #Oracledatabase
And if you want to use your existing views and let SQL macros "inject" parameter, you can check the second part (blog.sqlora.com/en/parameteriz…) of this post and also @StewAshton 's post: stewashton.wordpress.com/2024/04/24/sql…
And if you want to use your existing views and let SQL macros "inject" parameter, you can check the second part (blog.sqlora.com/en/parameteriz…) of this post and also @StewAshton 's post: stewashton.wordpress.com/2024/04/24/sql…
I am absolutely thrilled to be presenting at the #HROUG2024 for the first time. Thanks @Hroug_Croatia for accepting my talks. In just two weeks! See you there! @oracleace
There have been some changes and improvements to the Online Statistics Gathering for Bulk Loads over the last few years. Here is the new blog post: #oracledatabase @oracleace blog.sqlora.com/en/online-stat…
Join AOUG Anwenderkonferenz 2024 next week for many great sessions presented by Oracle ACEs 👉 @alexnuijten @Ambili_Thots @Andrej_SQL @JrgDoppelreiter @martinberger_ch @Mirela_RoOUG @RoelH @rsantrod @oraclesean @stefanoehrli social.ora.cl/60105VSQq #OracleACE
As a data engineer, do I have to worry about optimizer statistics? In the second part is a typical example of why the performance immediately after loading the data can be suboptimal if you don't take care of the stats. #oracledatabase @oracleace blog.sqlora.com/en/object-stat…
I will talk about optimizer statistics at #AOUG Conference on June 17th, in particular what my responsibilities as a data engineer are. I think it's very important that it's not seen as just a DBA's job. Here is just one simple example of why: blog.sqlora.com/en/object-stat… @oracleace
Der Call for Papers für die DOAG 2024 Konferenz + Ausstellung ist eröffnet! Bis zum 3. Juni könnt ihr ab sofort eure Beiträge einreichen und das Programm der großen Anwenderkonferenz aktiv mitgestalten. Wir freuen uns auf eure Einreichungen! #DOAG2024 scomp.ly/PbORz5G
Thanks @DOAGeV and organizing team for this awesome 10th #apexconn24 conference. And thanks to all attendies for your attention and feedback. I hope @josifabr and I could convince a few more people to check out #sqlmacros
Ready for crime investigation session at #apexconn24 with @monika_mitura @oracleace
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