Various fixes to get the tests running for Rails 6.1

lib/active_record/connection_adapters/sqlserver/database_statements.rb

@@ -54,7 +54,7 @@ def exec_update(sql, name, binds)
         end
 
         def begin_db_transaction
-          do_execute "BEGIN TRANSACTION"
+          do_execute "BEGIN TRANSACTION", "TRANSACTION"
         end
 
         def transaction_isolation_levels
@@ -67,25 +67,25 @@ def begin_isolated_db_transaction(isolation)
         end
 
         def set_transaction_isolation_level(isolation_level)
-          do_execute "SET TRANSACTION ISOLATION LEVEL #{isolation_level}"
+          do_execute "SET TRANSACTION ISOLATION LEVEL #{isolation_level}", "TRANSACTION"
         end
 
         def commit_db_transaction
-          do_execute "COMMIT TRANSACTION"
+          do_execute "COMMIT TRANSACTION", "TRANSACTION"
         end
 
         def exec_rollback_db_transaction
-          do_execute "IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION"
+          do_execute "IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION", "TRANSACTION"
         end
 
         include Savepoints
 
         def create_savepoint(name = current_savepoint_name)
-          do_execute "SAVE TRANSACTION #{name}"
+          do_execute "SAVE TRANSACTION #{name}", "TRANSACTION"
         end
 
         def exec_rollback_to_savepoint(name = current_savepoint_name)
-          do_execute "ROLLBACK TRANSACTION #{name}"
+          do_execute "ROLLBACK TRANSACTION #{name}", "TRANSACTION"
         end
 
         def release_savepoint(name = current_savepoint_name)

lib/active_record/connection_adapters/sqlserver/schema_creation.rb

@@ -6,6 +6,10 @@ module SQLServer
       class SchemaCreation < SchemaCreation
         private
 
+        def supports_index_using?
+          false
+        end
+
         def visit_TableDefinition(o)
           if_not_exists = o.if_not_exists
 

lib/active_record/connection_adapters/sqlserver/schema_statements.rb

@@ -27,7 +27,7 @@ def drop_table(table_name, **options)
             end
           end
           if options[:if_exists] && @version_year < 2016
-            execute "IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = #{quote(table_name)}) DROP TABLE #{quote_table_name(table_name)}"
+            execute "IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = #{quote(table_name)}) DROP TABLE #{quote_table_name(table_name)}", "SCHEMA"
           else
             super
           end

test/support/sql_counter_sqlserver.rb

@@ -11,17 +11,19 @@ def capture_sql_ss
       end
     end
 
-    ignored_sql = [
-      /INFORMATION_SCHEMA\.(TABLES|VIEWS|COLUMNS|KEY_COLUMN_USAGE)/im,
-      /sys.columns/i,
-      /SELECT @@version/,
-      /SELECT @@TRANCOUNT/,
-      /(BEGIN|COMMIT|ROLLBACK|SAVE) TRANSACTION/,
-      /SELECT CAST\(.* AS .*\) AS value/,
-      /SELECT DATABASEPROPERTYEX/im
-    ]
-
-    sqlcounter = ObjectSpace.each_object(ActiveRecord::SQLCounter).to_a.first
-    sqlcounter.instance_variable_set :@ignore, Regexp.union(ignored_sql.push(sqlcounter.ignore))
+    # TODO: Delete the code below after all Rails 6.1 tests passing.
+    #
+    # ignored_sql = [
+    #   /INFORMATION_SCHEMA\.(TABLES|VIEWS|COLUMNS|KEY_COLUMN_USAGE)/im,
+    #   /sys.columns/i,
+    #   /SELECT @@version/,
+    #   /SELECT @@TRANCOUNT/,
+    #   /(BEGIN|COMMIT|ROLLBACK|SAVE) TRANSACTION/,
+    #   /SELECT CAST\(.* AS .*\) AS value/,
+    #   /SELECT DATABASEPROPERTYEX/im
+    # ]
+    #
+    # sqlcounter = ObjectSpace.each_object(ActiveRecord::SQLCounter).to_a.first
+    # sqlcounter.instance_variable_set :@ignore, Regexp.union(ignored_sql.push(sqlcounter.ignore))
   end
 end