From: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Doc: simplify the tutorial's window-function examples.
Date: Tue, 21 Jan 2025 19:43:27 +0000
Message-ID: <E1taK9n-002mjy-5h@gemulon.postgresql.org> (raw)
Doc: simplify the tutorial's window-function examples.
For the purposes of this discussion, row_number() is just as good
as rank(), and its behavior is easier to understand and describe.
So let's switch the examples to using row_number().
Along the way to checking the results given in the tutorial,
I found it helpful to extract the empsalary table we use in the
regression tests, which is evidently the same data that was used
to make these results. So I shoved that into advanced.source
to improve the coverage of that file a little. (There's still
several pages of the tutorial that are not included in it,
but at least now 3.5 Window Functions is covered.)
Suggested-by: "David G. Johnston" <david.g.johnston@gmail.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/173737973383.1070.1832752929070067441@wrigleys.postgresql.org
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/4907ba304c346051a6535e67c043779755a78e84
Modified Files
--------------
doc/src/sgml/advanced.sgml | 41 +++++++++++++++++++-----------------
src/tutorial/advanced.source | 49 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 71 insertions(+), 19 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Doc: simplify the tutorial's window-function examples.
In-Reply-To: <E1taK9n-002mjy-5h@gemulon.postgresql.org>
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