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-rw-r--r--user_guide_src/source/database/query_builder.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/user_guide_src/source/database/query_builder.rst b/user_guide_src/source/database/query_builder.rst
index b86a0c8db..6ca72914f 100644
--- a/user_guide_src/source/database/query_builder.rst
+++ b/user_guide_src/source/database/query_builder.rst
@@ -830,6 +830,10 @@ array of values, the third parameter is the where key.
.. note:: All values are escaped automatically producing safer queries.
+.. note:: ``affected_rows()`` won't give you proper results with this method,
+ due to the very nature of how it works. Instead, ``update_batch()``
+ returns the number of rows affected.
+
$this->db->get_compiled_update()
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