diff --git a/lib/tasks/sync_nccu_personal_data_tasks.rake b/lib/tasks/sync_nccu_personal_data_tasks.rake
index eaa861e..7d6ea3b 100644
--- a/lib/tasks/sync_nccu_personal_data_tasks.rake
+++ b/lib/tasks/sync_nccu_personal_data_tasks.rake
@@ -13,6 +13,7 @@ module NccuSyncPlugin
     self.get_school_mapping
     self.get_position_mapping
     self.get_sta_num_to_nccu_id_mapping
+    @debug_sql_mode = false # true will print sql command
     @debug_mode = true # true will print rss_id if it is new record
     @test_mode = false
   end
@@ -341,7 +342,7 @@ module NccuSyncPlugin
         end
       end
     end
-    if @debug_mode
+    if @debug_sql_mode
       puts sql
     end
     sql