From 12b56e4b78a68b06f7e64aa349218f75ebb75ee6 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
<31488909+miss-islington@users.noreply.github.com>
Date: Fri, 22 Jul 2022 00:43:12 -0700
Subject: [PATCH] gh-81040: Improve sqlite3.Cursor.rowcount docs (GH-94940)
(cherry picked from commit f9b3706df65c4962646587b437a4eb39289dfd4c)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@protonmail.com>
---
Doc/library/sqlite3.rst | 17 +++++------------
1 file changed, 5 insertions(+), 12 deletions(-)
diff --git a/Doc/library/sqlite3.rst b/Doc/library/sqlite3.rst
index 9da7b5403cc..28f3b32014a 100644
--- a/Doc/library/sqlite3.rst
+++ b/Doc/library/sqlite3.rst
@@ -956,18 +956,11 @@ Cursor Objects
.. attribute:: rowcount
- Although the :class:`Cursor` class of the :mod:`sqlite3` module implements this
- attribute, the database engine's own support for the determination of "rows
- affected"/"rows selected" is quirky.
-
- For :meth:`executemany` statements, the number of modifications are summed up
- into :attr:`rowcount`.
-
- As required by the Python DB API Spec, the :attr:`rowcount` attribute "is -1 in
- case no ``executeXX()`` has been performed on the cursor or the rowcount of the
- last operation is not determinable by the interface". This includes ``SELECT``
- statements because we cannot determine the number of rows a query produced
- until all rows were fetched.
+ Read-only attribute that provides the number of modified rows for
+ ``INSERT``, ``UPDATE``, ``DELETE``, and ``REPLACE`` statements;
+ is ``-1`` for other statements,
+ including :abbr:`CTE (Common Table Expression)` queries.
+ It is only updated by the :meth:`execute` and :meth:`executemany` methods.
.. attribute:: lastrowid
--
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