On Wed, Nov 20, 2019 at 09:42:49PM +0800, leiyanliang@highgo.com wrote:
>Thank you for reply.
>
>I do not think the root cause of this problem is about privilege,and this windows machine is my test machine, only I
haveaccess to this machine.
>
>I think this problem is a bug,there are two evidences:
>
>The first evidence :
>
>postgres=# select version();
> version
>------------------------------------------------------------
> PostgreSQL 12.1, compiled by Visual C++ build 1914, 64-bit
>(1 行记录)
>
>
>时间：0.280 ms
>postgres=#
>postgres=#
>postgres=# copy github_events from 'd:\events.csv' csv; ----->>> d:\events.csv( about 316,302,020 Bytes) can copy
succussfully!!
>COPY 126245
>时间：19574.819 ms (00:19.575)
>postgres=# \q
>
Ah, I haven't noticed the information about file size in the first post,
as it was buried at the very end :-(
In that case, I think Tom is right it's likely the same issue as [1],
although that starts with a report about issues with 4GB. Maybe that's
due to using different windows version 2008 R2 vs. 2012 R2, though.
It'd be good if you could test the latest patch [2] in that thread.
You'll need to build PostgreSQL on Windows, though - I don't have much
experience with that, but there are wiki pages about doing that either
using Visual Studio [3] or mingw [4].
regards
[1] https://www.postgresql.org/message-id/15858-9572469fd3b73263%40postgresql.org
[2] https://www.postgresql.org/message-id/attachment/103789/0001-WIP-support-for-large-files-on-Win32-v4.patch
[3] https://wiki.postgresql.org/wiki/Working_With_VisualStudio
[4] https://wiki.postgresql.org/wiki/Building_With_MinGW
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
