Re: Detailed explanation why uber move from postgress to mysql
- From: Mladen Gogala <gogala.mladen@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Fri, 23 Dec 2016 02:34:31 -0500
On 12/21/2016 02:39 PM, Daniel Westermann wrote:
If you have doubts send an email to the PostgreSQL hackers mailing
list and I am sure they will help you with your issue. That is what
makes PostgreSQL great. Try it and you'll be surprised ... PostgreSQL
is handling very large data sets as of today, 2TB is in no way a limit
Cheers,
Daniel
Well, I have tried it and run away from it. I don't think PostgreSQL can
be described as "great", even with a lot of imagination. I will list
some of my gripes with PostgreSQL:
* Partitioning is a joke. No global indexes, not even primary key.
* Optimizer generates atrocious plans when querying partitioned
tables. It can only do partition pruning at the parse time, which
means that if there is a bind variable, the whole table will be read.
* Parallelism in 9.6 can only be described as "too little, too late".
* Strange attitude about hints. I am aware of pg_hint_plan, but that
was done despite disparaging comments and shutting down any
discussion about that. And the topic was regularly coming up,
because the database administrators wanted hints.
That is only a partial list. I have more issues with Postgres, but this
is not the right forum. To paraphrase the title of a book by the late
Christopher Hitchens, Postgres is not great. Not by far.
--
Mladen Gogala
Oracle DBA
http://mgogala.freehostia.com
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