Search Postgresql Archives

Re: How are pg_operator and pg_type related with each other?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



=?GB2312?B?RmVsaXgu0Ow=?= <ygnhzeus@xxxxxxxxx> writes:
> I'm wondering where I can find the corresponding operatorID of eq/lt for a
> specific data type.

The ones ANALYZE uses are the members of the default btree opclass for
the datatype.  If there isn't one, it doesn't build a histogram.

> And another question is that how to update or insert a column with type of
> "anyarray", since I want to mock the statistic data of tables, the type of
> stavalues in pg_statistic is anyarray, is there any way to manually modify
> that column, by some kind of function or hook?

I don't believe that's possible from SQL; as you found out, the type
system won't allow it, and it'd be a security hole if it did (since
there wouldn't be any check that the data you store actually matches
the type of the column the pg_statistic row claims to be about).

			regards, tom lane


-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux