Re: [Proposal] Global temporary tables

> 2020年3月4日 下午3:49，Prabhat Sahu <prabhat(dot)sahu(at)enterprisedb(dot)com> 写道：
>
> On Tue, Mar 3, 2020 at 2:11 PM 曾文旌(义从) <wenjing(dot)zwj(at)alibaba-inc(dot)com <mailto:wenjing(dot)zwj(at)alibaba-inc(dot)com>> wrote:
>
>
>
> I fixed in global_temporary_table_v16-pg13.patch.
>
> Thank you Wenjing for the patch.
> Now we are getting corruption with GTT with below scenario.
>
> postgres=# CREATE GLOBAL TEMPORARY TABLE gtt1(c1 bigint, c2 bigserial) on commit delete rows;
> CREATE TABLE
> postgres=# CREATE GLOBAL TEMPORARY TABLE gtt2(c1 bigint, c2 bigserial) on commit preserve rows;
> CREATE TABLE
> postgres=# \q
>
> [edb(at)localhost bin]$ echo "1
> > 2
> > 3
> > "> t.dat
>
> [edb(at)localhost bin]$ ./psql postgres
> psql (13devel)
> Type "help" for help.
>
> postgres=# \copy gtt1(c1) from 't.dat' with csv;
> ERROR: could not read block 0 in file "base/13585/t3_16384": read only 0 of 8192 bytes
> CONTEXT: COPY gtt1, line 1: "1"
>
> postgres=# \copy gtt2(c1) from 't.dat' with csv;
> ERROR: could not read block 0 in file "base/13585/t3_16390": read only 0 of 8192 bytes
> CONTEXT: COPY gtt2, line 1: "1"
>
> NOTE: We end with such corruption for "bigserial/smallserial/serial" datatype columns.
Thanks for review.

I fixed this issue in global_temporary_table_v17-pg13.patch

Wenjing

>
> --
> With Regards,
> Prabhat Kumar Sahu
> EnterpriseDB: http://www.enterprisedb.com <http://www.enterprisedb.com/>