修改cache key格式

ConsoleApp2/DataRecord.cs

@@ -81,7 +81,7 @@ public class DataRecord
     {
         if (TryGetField(record, columnName, out var  value))
         {
-            return $"{TableName}_{columnName}_{value}";
+            return $"{TableName}_{value}";
         }else
             throw new IndexOutOfRangeException($"Column name:{columnName} not found in this record.");