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Changes between Version 1 and Version 2 of Ticket #36064, comment 4

-              v1
+              v2
 {{{
+# 1. Model.id has a default
 foo = Model(id=1)
 foo.save()
+foo.save(). # INSERT
 bar = Model(id=1)
+# 1. if Model.id has a default, this raises IntegrityError
+# 2. if Model.id doesn't have a default, this updates foo
+bar.save()
+bar.save(). # INSERT & IntegrityError
+# 2. Model.id doesn't have a default
+foo = Model(id=1)
+foo.save(). # UPDATE & INSERT
+bar = Model(id=1)
+bar.save(). # UPDATE
 }}}