SQL掃描的行被覆蓋

我試圖從SQL服務器上的表中讀取所有行，並將它們存儲在字符串片中供以後使用。我遇到的問題是，以前掃描的行在每次掃描新行時都會被覆蓋，即使我已將所有可變字節切片轉換爲不可變字符串並將結果切片保存到另一切片。下面是我使用的代碼：SQL掃描的行被覆蓋

rawResult := make([]interface{}, len(cols)) // holds anything that could be in a row 
result := make([]string, len(cols)) // will hold all row elements as strings 
var results [][]string // will hold all the result string slices 
dest := make([]interface{}, len(cols)) // temporary, to pass into scan 
for i, _ := range rawResult { 
    dest[i] = &rawResult[i] // fill dest with pointers to rawResult to pass into scan 
} 
for rows.Next() { // for each row 
    err = rows.Scan(dest...) // scan the row 
    if err != nil { 
     log.Fatal("Failed to scan row", err) 
    } 
    for i, raw := range rawResult { // for each scanned byte slice in a row 
     switch rawtype := raw.(type){ // determine type, convert to string 
     case int64: 
      result[i] = strconv.FormatInt(raw.(int64), 10) 
     case float64: 
      result[i] = strconv.FormatFloat(raw.(float64), 'f', -1, 64) 
     case bool: 
      result[i] = strconv.FormatBool(raw.(bool)) 
     case []byte: 
      result[i] = string(raw.([]byte)) 
     case string: 
      result[i] = raw.(string) 
     case time.Time: 
      result[i] = raw.(time.Time).String() 
     case nil: 
      result[i] = "" 
     default: // shouldn't actually be reachable since all types have been covered 
      log.Fatal("Unexpected type %T", rawtype) 
     } 
    } 
    results = append(results, result) // append the result to our slice of results 
}

我敢肯定，這事做與圍棋處理變量和內存的方式，但我似乎無法修復它。有人能解釋我不理解的東西嗎？

來源

2015-07-20 Barry McNamara