我試圖用2「while while」循環運行2個不同的SQL表格

Question

警告：mysql_fetch_array（）期望參數1是資源，布爾在C：\ public_html \ mars \ TaskC \ hitUrl.php中給出了行148

$query = "SELECT url FROM urls"; 
$tableQuery = mysql_query($query); 


while($row = mysql_fetch_array($tableQuery)){ 
    $newQuery="SELECT urls,date FROM urls_info WHERE url='{$row['url']}'"; 
    $newTableQuery=mysql_query($newQuery); 

    $newGroupedQuery = $newQuery . "GROUP BY date"; 

    while($newRow = mysql_fetch_array($newTableQuery)){ 
     $displayStr .= "<tr>"; 
     $displayStr .= "<td>".$newRow['date']."</td>"; 
     $displayStr .= "<td>".$newRow['url']."</td>"; 
     $displayStr .= "<td>".num_rows($newQuery)."</td>"; 
     $displayStr .= "</tr>"; 
    } 


} 

Answer 1

這似乎是的mysql_query失敗， 嘗試把這樣的事情

$tableQuery = mysql_query($query) or die("Query failed with error: ".mysql_error()); 

而一個SQL連接更原生的事，多業績爲導向。

Answer 2

始終本地連接：

$newQuery="SELECT urls,date FROM urls_info as info INNER JOIN urls ON info.url = urls.url";