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.johns...@gmail.com> Author: Tom Lane <t...@sss.pgh.pa.us> Discussion: https://postgr.es/m/173737973383.1070.1832752929070067...@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(-)
