Fix affected rows count when lowercase schema reflection enabled (#1306)

Author: aidanharan

lib/active_record/connection_adapters/sqlserver/database_statements.rb

@@ -43,7 +43,8 @@ def cast_result(raw_result)
 
         # Returns the affected rows from results.
         def affected_rows(raw_result)
-          raw_result&.first&.fetch("AffectedRows", nil)
+          column_name = lowercase_schema_reflection ? "affectedrows" : "AffectedRows"
+          raw_result&.first&.fetch(column_name, nil)
         end
 
         # Returns the affected rows from results or handle.

test/cases/adapter_test_sqlserver.rb

@@ -7,6 +7,7 @@
 require "models/subscriber"
 require "models/minimalistic"
 require "models/college"
+require "models/discount"
 
 class AdapterTestSQLServer < ActiveRecord::TestCase
   fixtures :tasks
@@ -189,6 +190,24 @@ class AdapterTestSQLServer < ActiveRecord::TestCase
       assert_equal "Favorite number?", SSTestUppered.last.column1
       assert SSTestUppered.columns_hash["column2"]
     end
+
+    it "destroys model with no associations" do
+      connection.lowercase_schema_reflection = true
+
+      assert_nothing_raised do
+        discount = Discount.create!
+        discount.destroy!
+      end
+    end
+
+    it "destroys model with association" do
+      connection.lowercase_schema_reflection = true
+
+      assert_nothing_raised do
+        post = Post.create!(title: "Setup", body: "Record to be deleted")
+        post.destroy!
+      end
+    end
   end
 
   describe "identity inserts" do