Re: [GENERAL] Inserting millions of record in a partitioned Table

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От Rob Sargent
Тема Re: [GENERAL] Inserting millions of record in a partitioned Table
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Msg-id 4c8e2761-1c8f-56c4-a2bc-de33eef23206@gmail.com
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Ответ на Re: [GENERAL] Inserting millions of record in a partitioned Table  (Vick Khera <vivek@khera.org>)
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On 09/20/2017 02:46 PM, Vick Khera wrote:
On Wed, Sep 20, 2017 at 10:10 AM, Job <Job@colliniconsulting.it> wrote:
We noticed that if we import directly into the global table it is really, really slow.
Importing directly in the single partition is faster.


Do you have a rule or trigger on the main table to redirect to the partitions? You should expect that to take some extra time *per row*. Your best bet is to just import into the proper partition and make sure your application produces batch files that align with your partitions.

Either that or write a program that reads the data, determines the partition, and then inserts directly to it. It might be faster.

I wonder if this is a case of hurry up and wait.  A script which could load say 10 records, and assuming that takes much less than one second, run once per second (waiting 1000 - runtime ms) would by now have done about a million records since the question was asked.

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