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Comment by nottorp | Hacker News Reader

This is not a technical reason, but MySQL is now owned by Oracle, which carries a whole host of risks if you're a small fry. A technical comparison should be done between MariaDB and Postgres if you ask me...

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For example we have upgraded our MySQL 5.5 to 5.7 and we were hit by a performance issue in few GROUP BY queries. Then we decided to use 5.6 instead of 5.7. I think the Oracle corporation doesn't care much about MySQL.

Edit: In MySQL 5.5 and 5.6 it takes around 1 second but in 5.7 it takes around 70 seconds.

From MySQL 5.6 to MySQL 5.7, the cost model changes significantly. So while most queries will improve - there are edge cases where regressions occur. In anticipation of this occurring (even if you are better 99% of the time; there will be cases where two wrongs made a right), MySQL 5.7 also added new query hints.

I work on the MySQL team; we are 2x the size under Oracle, and have made many improvements. Please check out my list here: http://www.thecompletelistoffeatures.com/

Confirmed:

My boss got a call from an Oracle "sales representative" or something about getting our licenses - and we only use the default MySQL that comes with AMI on AWS.

I think we concluded he had entered contact information into one of the forms while trying to download something.

Did Oracle say that your company must buy licenses to continue to use MySQL. Or they just selling some service/products?

IDK the exact wording but think those two options can be a bit hard to see when you have an eager sales representative on the line.

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