Question

目前我使用此代碼統計調查的答覆從MySQL數據庫來算調查答覆：

$VERYHAPPY = mysql_query("SELECT * FROM answers, complete WHERE (answers.uniqueID = complete.uniqueID) AND (complete.timestamp) IS NOT NULL AND (answers.surveyID='$surveyID') AND QID = '$QID' AND response = 'VERY HAPPY' "); 
$HAPPY = mysql_query("SELECT * FROM answers, complete WHERE (answers.uniqueID = complete.uniqueID) AND (complete.timestamp) IS NOT NULL AND (answers.surveyID='$surveyID') AND QID = '$QID' AND response = 'HAPPY' "); 
$DONTKNOW = mysql_query("SELECT * FROM answers, complete WHERE (answers.uniqueID = complete.uniqueID) AND (complete.timestamp) IS NOT NULL AND (answers.surveyID='$surveyID') AND QID = '$QID' AND response = 'DONT KNOW' "); 
$UNHAPPY = mysql_query("SELECT * FROM answers, complete WHERE (answers.uniqueID = complete.uniqueID) AND (complete.timestamp) IS NOT NULL AND (answers.surveyID='$surveyID') AND QID = '$QID' AND response = 'UNHAPPY' "); 
$VERYUNHAPPY = mysql_query("SELECT * FROM answers, complete WHERE (answers.uniqueID = complete.uniqueID) AND (complete.timestamp) IS NOT NULL AND (answers.surveyID='$surveyID') AND QID = '$QID' AND response = 'VERY UNHAPPY' "); 

$VERYHAPPYcount = mysql_num_rows($VERYHAPPY); 
$HAPPYcount = mysql_num_rows($HAPPY); 
$DONTKNOWcount = mysql_num_rows($DONTKNOW); 
$UNHAPPYcount = mysql_num_rows($UNHAPPY); 
$VERYUNHAPPYcount = mysql_num_rows($VERYUNHAPPY); 
    echo "VERY HAPPY = $VERYHAPPYcount</br>HAPPY = $HAPPYcount</br>DON'T KNOW = $DONTKNOWcount</br>UNHAPPY = $UNHAPPYcount</br>VERY UNHAPPY = $VERYUNHAPPYcount"; 

，你可以看到 - 這是真的亂了！任何更好的方式來做到這一點？我試過COUNT和GROUP BY，但無法讓他們工作。由於

Answer 1

你可以試試這個SQL（我沒有測試） -

SELECT count(*) as recordcount, response 
FROM answers, complete 
WHERE (answers.uniqueID = complete.uniqueID) 
AND (complete.timestamp) IS NOT NULL 
AND (answers.surveyID='$surveyID') 
AND QID = '$QID' 
GROUP BY response 

要得到的結果爲PHP，你可以嘗試這樣的事情（我不能測試PHP代碼，所以我基於下面的代碼在這個代碼 - ！http://php.net/manual/en/function.mysql-query.php和最好的希望下面的代碼幾乎可以肯定將包含錯誤，但將有希望給你如何可以做到的想法）

//assign sql above to $query variable prior to doing this 
$result = mysql_query($query); 

while ($row = mysql_fetch_assoc($result)) { 
    echo $row['response'] & " = " & $ row['recordcount'] & "count</br>" 
}