From 76ec6a78573e3b49ea0c49e45b5371b5f1acdff1 Mon Sep 17 00:00:00 2001
From: "Collin M. Barrett" <collinbarrett@users.noreply.github.com>
Date: Mon, 22 Jan 2018 07:58:51 -0600
Subject: [PATCH] minor efficiency improvement if no values to seed

---
 src/FilterLists.Data/FilterListsDbContextExtensions.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/FilterLists.Data/FilterListsDbContextExtensions.cs b/src/FilterLists.Data/FilterListsDbContextExtensions.cs
index 148a15fd2..8b6bbc06e 100644
--- a/src/FilterLists.Data/FilterListsDbContextExtensions.cs
+++ b/src/FilterLists.Data/FilterListsDbContextExtensions.cs
@@ -44,9 +44,9 @@ private static void InsertOnDuplicateKeyUpdate<TEntityType>(this DbContext dbCon
         {
             var entityType = dbContext.Model.FindEntityType(typeof(TEntityType));
             var properties = GetPropertiesLessValueGeneratedTimestamps(entityType);
-            var columns = string.Join(", ", properties.Select(x => x.Name));
             var values = CreateValues<TEntityType>(properties, dataPath);
             if (values == "") return;
+            var columns = string.Join(", ", properties.Select(x => x.Name));
             var updates = CreateUpdates(properties);
             var rawSqlString = "INSERT INTO " + entityType.Relational().TableName + " (" + columns + ") VALUES " +
                                values + " ON DUPLICATE KEY UPDATE " + updates;