处理 string 和 int, converting NULL to string is unsupported

exec/scanner.go

@@ -70,9 +70,15 @@ func (s *scanner) ScanStruct(i interface{}) error {
 	scans := make([]interface{}, 0, len(s.columns))
 	for _, col := range s.columns {
 		data, ok := s.columnMap[col]
-		switch {
-		case !ok:
+
+		if !ok {
 			return unableToFindFieldError(col)
+		}
+		// 处理 converting NULL to string is unsupported
+		// 前面将 string 和 int 类型转为了 *string 和 *int
+		switch data.GoType.Kind() {
+		case reflect.String, reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			scans = append(scans, reflect.New(reflect.PointerTo(data.GoType)).Interface())
 		default:
 			scans = append(scans, reflect.New(data.GoType).Interface())
 		}