From: krave1986 <krave@qq.com>
Date: Thu, 3 Apr 2025 18:55:36 +0000 (+0800)
Subject: docs: Fix substr function starting index in hybrid_property example (#12482)
X-Git-Tag: rel_2_0_41~32
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b74d6ca27de18dd5436a32fbeeef8e072845f040;p=thirdparty%2Fsqlalchemy%2Fsqlalchemy.git

docs: Fix substr function starting index in hybrid_property example (#12482)

(cherry picked from commit 0c1824c666c55ae19051feb4970060385c674bb3)
---

diff --git a/doc/build/orm/mapped_attributes.rst b/doc/build/orm/mapped_attributes.rst
index d0610f4e0f..b114680132 100644
--- a/doc/build/orm/mapped_attributes.rst
+++ b/doc/build/orm/mapped_attributes.rst
@@ -234,7 +234,7 @@ logic::
             """Produce a SQL expression that represents the value
             of the _email column, minus the last twelve characters."""
 
-            return func.substr(cls._email, 0, func.length(cls._email) - 12)
+            return func.substr(cls._email, 1, func.length(cls._email) - 12)
 
 Above, accessing the ``email`` property of an instance of ``EmailAddress``
 will return the value of the ``_email`` attribute, removing or adding the
@@ -249,7 +249,7 @@ attribute, a SQL function is rendered which produces the same effect:
     {execsql}SELECT address.email AS address_email, address.id AS address_id
     FROM address
     WHERE substr(address.email, ?, length(address.email) - ?) = ?
-    (0, 12, 'address')
+    (1, 12, 'address')
     {stop}
 
 Read more about Hybrids at :ref:`hybrids_toplevel`.