Update mysql date format

Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_BaseDateFomat.cs

@@ -131,6 +131,21 @@ namespace SqlSugar
             {
                 return string.Format("FORMAT({0},'{1}','en-US')", value, formatString);
             }
+            else if (IsMySql()&& !formatString.Contains("%"))
+            {
+                var newFormt = formatString
+                    .Replace("yyyy", "%Y")
+                    .Replace("yy", "%Y")
+                    .Replace("MM", "%m")
+                    .Replace("M", "%m")
+                    .Replace("dd", "%d")
+                    .Replace("HH", "%H")
+                    .Replace("hh", "%h")
+                    .Replace("mm", "%i") 
+                    .Replace("ss", "%s") 
+                    .Replace("fff", "%f");
+                return $"DATE_FORMAT({value}, '{newFormt}')";
+            }
             var parameter = new MethodCallExpressionArgs() { IsMember = true, MemberValue = DateType.Year };
             var parameter2 = new MethodCallExpressionArgs() { IsMember = true, MemberName = value };
             var parameters = new MethodCallExpressionModel() { Args = new List<MethodCallExpressionArgs>() { parameter2, parameter } };