Update mysql codefirst

Src/Asp.NetCore2/SqlSugar/Realization/MySql/CodeFirst/MySqlCodeFirst.cs

@@ -123,5 +123,22 @@ namespace SqlSugar
             }
         }
 
+
+        protected override bool IsNoSamgeType(EntityColumnInfo ec, DbColumnInfo dc)
+        {
+            if (ec.UnderType==UtilConstants.BoolType && dc.DataType == "tinyint" && dc.Length == 1)
+            {
+                return false;
+            }
+            else if (ec.UnderType == UtilConstants.DobType && dc.DataType== "double")
+            {
+                return false;
+            }
+            else if (ec.UnderType == UtilConstants.DateType && dc.DataType?.StartsWith("datetime")==true)
+            {
+                return false;
+            }
+            return base.IsNoSamgeType(ec, dc);
+        }
     }
 }