optionally schema-qualified for table_name

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#1PG Bug reporting form
noreply@postgresql.org

The following documentation comment has been logged on the website:

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

Although I can see that table_name in OWNED BY clause can be optionally
schema-qualified by ᅟcarefully reading "The specified table must have the
same owner and be in the same schema as the sequence.", it would be good if
"optionally schema-qualified" is explicitly noted somehow like other pages
such as CREATE TABLE and CREATE VIEW. The same applies to CREATE SEQUENCE
page.

#2Bruce Momjian
bruce@momjian.us
In reply to: PG Bug reporting form (#1)
Re: optionally schema-qualified for table_name

On Thu, Mar 12, 2020 at 05:58:02AM +0000, PG Doc comments form wrote:

The following documentation comment has been logged on the website:

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

Although I can see that table_name in OWNED BY clause can be optionally
schema-qualified by ᅟcarefully reading "The specified table must have the
same owner and be in the same schema as the sequence.", it would be good if
"optionally schema-qualified" is explicitly noted somehow like other pages
such as CREATE TABLE and CREATE VIEW. The same applies to CREATE SEQUENCE
page.

I see what you mean. The attached patch fixes this, as well as
adjusting the error message. I didn't see any other cases.

I thought maybe the schema wasn't mentioned because the table.column
defaults to the sequence's schema, but it does not --- you have to
specify the column's schema if would not be normally be found via
search_path:

CREATE SCHEMA zz;

SET search_path = zz, public;

CREATE TABLE zz.test (x INT);
CREATE SEQUENCE zz.ss;

ALTER SEQUENCE zz.ss OWNED BY test.x;

SET search_path = public, zz;
ALTER SEQUENCE zz.ss OWNED BY test.x;

SET search_path = public;

ALTER SEQUENCE zz.ss OWNED BY test.x;
--> ERROR: relation "test" does not exist
ALTER SEQUENCE zz.ss OWNED BY zz.test.x;

--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EnterpriseDB https://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +

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#3Tom Lane
tgl@sss.pgh.pa.us
In reply to: Bruce Momjian (#2)
Re: optionally schema-qualified for table_name

Bruce Momjian <bruce@momjian.us> writes:

I see what you mean. The attached patch fixes this, as well as
adjusting the error message. I didn't see any other cases.

I don't really think this is an improvement, mainly because that
error message is inventing a notation that we do not use in any
other error message.

regards, tom lane

#4Bruce Momjian
bruce@momjian.us
In reply to: Tom Lane (#3)
Re: optionally schema-qualified for table_name

On Sun, Mar 22, 2020 at 03:05:01PM -0400, Tom Lane wrote:

Bruce Momjian <bruce@momjian.us> writes:

I see what you mean. The attached patch fixes this, as well as
adjusting the error message. I didn't see any other cases.

I don't really think this is an improvement, mainly because that
error message is inventing a notation that we do not use in any
other error message.

What do you suggest? The current message is:

Specify OWNED BY table.column or OWNED BY NONE.

I don't see any other messages with "table.column". Do you want?

Specify OWNED BY column or OWNED BY NONE.

--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EnterpriseDB https://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +
#5Tom Lane
tgl@sss.pgh.pa.us
In reply to: Bruce Momjian (#4)
Re: optionally schema-qualified for table_name

Bruce Momjian <bruce@momjian.us> writes:

On Sun, Mar 22, 2020 at 03:05:01PM -0400, Tom Lane wrote:

I don't really think this is an improvement, mainly because that
error message is inventing a notation that we do not use in any
other error message.

What do you suggest? The current message is:

Specify OWNED BY table.column or OWNED BY NONE.

Yeah, and I think that's okay as-is, or at least we can't make it better
without fairly whole-sale changes of our documentation practices.
The fact that a table name can be schema-qualified is usually implicit,
and I don't see why this place cries out for making it explicit
more than other places. You could as well complain that there's
nothing explicit here about double-quoting practices.

regards, tom lane

#6Bruce Momjian
bruce@momjian.us
In reply to: Tom Lane (#5)
Re: optionally schema-qualified for table_name

On Sun, Mar 22, 2020 at 06:20:04PM -0400, Tom Lane wrote:

Bruce Momjian <bruce@momjian.us> writes:

On Sun, Mar 22, 2020 at 03:05:01PM -0400, Tom Lane wrote:

I don't really think this is an improvement, mainly because that
error message is inventing a notation that we do not use in any
other error message.

What do you suggest? The current message is:

Specify OWNED BY table.column or OWNED BY NONE.

Yeah, and I think that's okay as-is, or at least we can't make it better
without fairly whole-sale changes of our documentation practices.
The fact that a table name can be schema-qualified is usually implicit,
and I don't see why this place cries out for making it explicit
more than other places. You could as well complain that there's
nothing explicit here about double-quoting practices.

OK, I will do just the documentation patch for this then.

--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EnterpriseDB https://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +
#7Peter Eisentraut
peter_e@gmx.net
In reply to: Bruce Momjian (#6)
Re: optionally schema-qualified for table_name

On 2020-03-23 02:27, Bruce Momjian wrote:

On Sun, Mar 22, 2020 at 06:20:04PM -0400, Tom Lane wrote:

Bruce Momjian <bruce@momjian.us> writes:

On Sun, Mar 22, 2020 at 03:05:01PM -0400, Tom Lane wrote:

I don't really think this is an improvement, mainly because that
error message is inventing a notation that we do not use in any
other error message.

What do you suggest? The current message is:

Specify OWNED BY table.column or OWNED BY NONE.

Yeah, and I think that's okay as-is, or at least we can't make it better
without fairly whole-sale changes of our documentation practices.
The fact that a table name can be schema-qualified is usually implicit,
and I don't see why this place cries out for making it explicit
more than other places. You could as well complain that there's
nothing explicit here about double-quoting practices.

OK, I will do just the documentation patch for this then.

The same criticism applies to the documentation patch, I think. We
don't usually make the schema part explicit.

--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

#8Bruce Momjian
bruce@momjian.us
In reply to: Peter Eisentraut (#7)
Re: optionally schema-qualified for table_name

On Tue, Mar 24, 2020 at 09:35:25PM +0100, Peter Eisentraut wrote:

On 2020-03-23 02:27, Bruce Momjian wrote:

On Sun, Mar 22, 2020 at 06:20:04PM -0400, Tom Lane wrote:

Bruce Momjian <bruce@momjian.us> writes:

On Sun, Mar 22, 2020 at 03:05:01PM -0400, Tom Lane wrote:

I don't really think this is an improvement, mainly because that
error message is inventing a notation that we do not use in any
other error message.

What do you suggest? The current message is:

Specify OWNED BY table.column or OWNED BY NONE.

Yeah, and I think that's okay as-is, or at least we can't make it better
without fairly whole-sale changes of our documentation practices.
The fact that a table name can be schema-qualified is usually implicit,
and I don't see why this place cries out for making it explicit
more than other places. You could as well complain that there's
nothing explicit here about double-quoting practices.

OK, I will do just the documentation patch for this then.

The same criticism applies to the documentation patch, I think. We don't
usually make the schema part explicit.

That is a good point. I used CREATE VIEW as an example because that is
what the user reported, but it seems only create_view and reindexed use
a schema name qualification:

$ grep -l '<replaceable>schema</replaceable>' *.sgml
create_view.sgml
reindexdb.sgml

The reindexdb use is because of -S (reindex schema), which makes sense.
The create view case is used in an example of CREATE RECURSIVE VIEW and
should probably be removed.

--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EnterpriseDB https://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +
#9Peter Eisentraut
peter_e@gmx.net
In reply to: Bruce Momjian (#8)
Re: optionally schema-qualified for table_name

On 2020-03-24 21:58, Bruce Momjian wrote:

That is a good point. I used CREATE VIEW as an example because that is
what the user reported, but it seems only create_view and reindexed use
a schema name qualification:

$ grep -l '<replaceable>schema</replaceable>' *.sgml
create_view.sgml
reindexdb.sgml

The reindexdb use is because of -S (reindex schema), which makes sense.
The create view case is used in an example of CREATE RECURSIVE VIEW and
should probably be removed.

The CREATE RECURSIVE VIEW example is making a specific point about
schema qualification, which is explained below the example.

--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

#10Bruce Momjian
bruce@momjian.us
In reply to: Peter Eisentraut (#9)
Re: optionally schema-qualified for table_name

On Wed, Mar 25, 2020 at 01:46:54PM +0100, Peter Eisentraut wrote:

On 2020-03-24 21:58, Bruce Momjian wrote:

That is a good point. I used CREATE VIEW as an example because that is
what the user reported, but it seems only create_view and reindexed use
a schema name qualification:

$ grep -l '<replaceable>schema</replaceable>' *.sgml
create_view.sgml
reindexdb.sgml

The reindexdb use is because of -S (reindex schema), which makes sense.
The create view case is used in an example of CREATE RECURSIVE VIEW and
should probably be removed.

The CREATE RECURSIVE VIEW example is making a specific point about schema
qualification, which is explained below the example.

OK, so I guess everything is fine and we can just go back to other
business. :-) Sorry for the distraction.

--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EnterpriseDB https://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +