Re: initdb - creating clusters

2020-07-22 Thread Bruce Momjian
On Tue, Jul 21, 2020 at 10:40:59AM +0200, Daniel Gustafsson wrote:
> > On 21 Jul 2020, at 02:25, Bruce Momjian  wrote:
> > 
> > On Thu, Jul  9, 2020 at 03:25:14PM +, PG Doc comments form wrote:
> >> looking.  For instance the documentation on replication strategies includes
> >> proprietary solutions.
> > 
> > Uh, what proprietary solutions are listed in our documentation?
> 
> I think "proprietary" here implies outside-of-core, and we have a few of those
> listed in the "Comparison of Different Solutions" section.

Oh, OK, those seem fine to me.

-- 
  Bruce Momjian  https://momjian.us
  EnterpriseDB https://enterprisedb.com

  The usefulness of a cup is in its emptiness, Bruce Lee





Subscript expressions do not have to evaluate to integers

2020-07-22 Thread PG Doc comments form
The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/12/sql-expressions.html
Description:

Section 4.2.3. Subscripts of the documentation states:

> Each subscript is itself an expression, which must yield an integer
value.

However, the following query works on Postgres 12.1

SELECT (ARRAY[1, 2, 3]::integer[])[1.5];

 array
---
 2

I believe a more appropriate statement would acknowledge that at least some
values undergo an explicit-style conversion to an integer.


Import an XML file

2020-07-22 Thread Jürgen Purtz

On 22.07.20 01:49, PASCAL CROZET wrote:


Hi all,

I want to import XML file into PG database table.

I've find functions to get the XML content of a cell after imported an 
XML file with the pg_get_file function.


But, I want to explode the XML content to colums. How can I do this ?

PG 10 under Ubuntu 18

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Cordialement, *Pascal CROZET**
*

*DBA *- Qualis Consulting

•300 Route Nationale 6 – 69760 LIMONEST

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Pascal, your situation is unclear - at least for me. Please give us more 
information concerning


 * your pg_get_file function
 * a short excerpt of your file
 * the DDL of your table
 * what is your understanding of a 'cell'?

Is this helpful: 
https://www.postgresql.org/docs/current/functions-xml.html ?


Kind regards, Jürgen Purtz