[2.0.x] Fixed #27979 -- Made MySQL raise IntegrityError rather than OperationalError when saving negative numbers in PositiveInteger fields.

Backport of dd82f3327124fd2762cf6df2ac8c6380772bf127 from master

1 files changed, 4 insertions, 1 deletions

diff --git a/django/db/backends/mysql/base.py b/django/db/backends/mysql/base.py
index 0e5c25fc23..f4bad47e06 100644
--- a/django/db/backends/mysql/base.py
+++ b/django/db/backends/mysql/base.py
@@ -57,7 +57,10 @@ class CursorWrapper:
     Implemented as a wrapper, rather than a subclass, so that it isn't stuck
     to the particular underlying representation returned by Connection.cursor().
     """
-    codes_for_integrityerror = (1048,)
+    codes_for_integrityerror = (
+        1048,  # Column cannot be null
+        1690,  # BIGINT UNSIGNED value is out of range
+    )
 
     def __init__(self, cursor):
         self.cursor = cursor