pgsql: docs: Improve window function docs

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: docs: Improve window function docs
Date: 2017-04-11 14:47:50
Message-ID: E1cxx5C-0003xn-Ns@gemulon.postgresql.org
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docs: Improve window function docs

Specifically, the behavior of general-purpose and statistical aggregates
as window functions was not clearly documented, and terms were
inconsistently used. Also add docs about the difference between
cume_dist and percent_rank, rather than just the formulas.

Discussion: 20170406214918(dot)GA5757(at)momjian(dot)us

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/1c1a4726eba5bb8c0772db8a8efe0315d71887fb

Modified Files
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doc/src/sgml/advanced.sgml | 31 +++++++++++++++----------------
doc/src/sgml/func.sgml | 44 ++++++++++++++++++++++++++++----------------
doc/src/sgml/syntax.sgml | 27 ++++++++++++++-------------
3 files changed, 57 insertions(+), 45 deletions(-)

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