remove the lie that "binding code is only interested in names - not types"; it...

remove the lie that "binding code is only interested in names - not types"; it might have been true once, but not for a long time

Dapper.Tests/Tests.cs

@@ -2945,7 +2945,7 @@ public void Issue295_NullableDateTime_MySql_ConvertAllowZeroDatetime()
         [FactMySql]
         public void Issue426_SO34439033_DateTimeGainsTicks()
         {
-            using (var conn = GetMySqlConnection())
+            using (var conn = GetMySqlConnection(true, true, true))
             {
                 try { conn.Execute("drop table Issue426_Test"); } catch { }
                 try { conn.Execute("create table Issue426_Test (Id int not null, Time time not null)"); } catch { }

Dapper/SqlMapper.cs

@@ -43,9 +43,9 @@ static int GetColumnHash(IDataReader reader)
             {
                 int colCount = reader.FieldCount, hash = colCount;
                 for (int i = 0; i < colCount; i++)
-                {   // binding code is only interested in names - not types
+                {   
                     object tmp = reader.GetName(i);
-                    hash = (hash * 31) + (tmp?.GetHashCode() ?? 0);
+                    hash = -79 * ((hash * 31) + (tmp?.GetHashCode() ?? 0)) + (reader.GetFieldType(i)?.GetHashCode() ?? 0);
                 }
                 return hash;
             }
@@ -1616,7 +1616,7 @@ private static void PassByPosition(IDbCommand cmd)
             }
             return GetStructDeserializer(type, underlyingType ?? type, startBound);
         }
-        static Func<IDataReader, object> GetHandlerDeserializer(ITypeHandler handler, Type type, int startBound)
+        private static Func<IDataReader, object> GetHandlerDeserializer(ITypeHandler handler, Type type, int startBound)
         {
             return reader => handler.Parse(type, reader.GetValue(startBound));
         }