Fine-tune Scan of database/sql to fetch dynamic columns

mysql_scan.go

func Scan(list *sql.Rows) (rows []map[string]interface{}) {
   fields, _ := list.Columns()
   for list.Next() {
      scans := make([]interface{}, len(fields))
      row := make(map[string]interface{})

      for i := range scans {
         scans[i] = &scans[i]
      }
      list.Scan(scans...)
      for i, v := range scans {
         var value = ""
         if v != nil {
            value = fmt.Sprintf("%s", v)
         }
         row[fields[i]] = value
      }
      rows = append(rows, row)
   }
   return
}