diff --git a/Src/Asp.Net/OracleTest/Demo/Demo1_Queryable.cs b/Src/Asp.Net/OracleTest/Demo/Demo1_Queryable.cs
index d87b64697..2644890a5 100644
--- a/Src/Asp.Net/OracleTest/Demo/Demo1_Queryable.cs
+++ b/Src/Asp.Net/OracleTest/Demo/Demo1_Queryable.cs
@@ -42,6 +42,15 @@ namespace OrmTest
             var getByWhere2 = db.Queryable<Order>().Where(it => it.Id == DateTime.Now.Year).ToList();
             var getByFuns = db.Queryable<Order>().Where(it => SqlFunc.IsNullOrEmpty(it.Name)).ToList();
             var getByFuns2 = db.Queryable<Order>().GroupBy(it => it.Name).Select(it => SqlFunc.AggregateDistinctCount(it.Price)).ToList();
+            var test1 = db.UnionAll(
+                 db.Queryable<Order>().Select(it=>new ViewOrder() { 
+                   CustomName=SqlFunc.MergeString(it.Name,"/",it.Name)
+                 }),
+                 db.Queryable<Order>().Select(it => new ViewOrder()
+                 {
+                     CustomName = SqlFunc.MergeString(it.Name, "/", it.Name)
+                 })
+                ).ToList();
             Console.WriteLine("#### Examples End ####");
         }
 
diff --git a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
index 5faede253..bfbe6ee5b 100644
--- a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
@@ -140,9 +140,9 @@ namespace SqlSugar
             itemSql = Regex.Replace(itemSql, string.Format(@"\+{0}\+", "\\" + itemParameter.ParameterName), "+" + newName + "+", RegexOptions.IgnoreCase);
             itemSql = Regex.Replace(itemSql, string.Format(@"\+{0} ", "\\" + itemParameter.ParameterName), "+" + newName + " ", RegexOptions.IgnoreCase);
             itemSql = Regex.Replace(itemSql, string.Format(@" {0}\+", "\\" + itemParameter.ParameterName), " " + newName + "+", RegexOptions.IgnoreCase);
-            itemSql = Regex.Replace(itemSql, string.Format(@"\|\|{0}\|\|", "\\" + itemParameter.ParameterName), "+" + newName + "+", RegexOptions.IgnoreCase);
+            itemSql = Regex.Replace(itemSql, string.Format(@"\|\|{0}\|\|", "\\" + itemParameter.ParameterName), "||" + newName + "||", RegexOptions.IgnoreCase);
             itemSql = Regex.Replace(itemSql, string.Format(@"\={0}\+", "\\" + itemParameter.ParameterName), "=" + newName + "+", RegexOptions.IgnoreCase);
-            itemSql = Regex.Replace(itemSql, string.Format(@"{0}\|\|", "\\" + itemParameter.ParameterName), newName + "+", RegexOptions.IgnoreCase);
+            itemSql = Regex.Replace(itemSql, string.Format(@"{0}\|\|", "\\" + itemParameter.ParameterName), newName + "||", RegexOptions.IgnoreCase);
             return itemSql;
         }
         internal static Type GetRootBaseType(Type entityType)