從mySQL數據庫中讀取多個表？

嗯，我不能真正具體說明我在標題中的問題，所以請原諒我。從mySQL數據庫中讀取多個表？

我製作了一個.php腳本，用於從我的數據庫中讀取數據並將其打印到頁面上的表格中。基本上它應該作爲禁止表。但我陷入了一個問題。由於該禁令在數據庫中的幾個不同的表中排序，我需要閱讀所有這些信息以獲取禁止列表中需要的特定詳細信息。我完成了大部分工作，但我無法獲得禁止「騙子」的管理員的姓名。以下是「admin_id」位於「處罰」表中的事情，admin的名稱位於「clients」表中。現在我無法弄清楚如何通過「處罰」表中的「admin_id」從「客戶」表中獲取管理員的姓名，並將其打印在同一頁面上。

所以this是我所做的，我只是缺少「管理員」的名稱。

以下是從數據庫中讀取當前信息的代碼。

mysql_query("SELECT penalties.id, penalties.type, penalties.time_add, penalties.time_expire, 
        penalties.reason, penalties.inactive, penalties.duration, penalties.admin_id, 
        target.id as target_id, target.name as target_name, target.ip as target_ip 
      FROM penalties, clients as target 
      WHERE (penalties.type = 'TempBan' OR penalties.type = 'Ban') 
        AND inactive = 0 
        AND penalties.client_id = target.id 
      ORDER BY penalties.id DESC") 
    or die(mysql_error());

來源

2013-07-02 W4RL10N

您需要使用連接。 – Pitchinnate

你想聽聽[mysql JOIN]（http://stackoverflow.com/questions/7877720/the-best-tutorial-on-joins-in-mysql）。 – moonwave99

建議使用mysqli或PDO_MySQL擴展。不建議在新的開發中使用舊的mysql擴展。 http://php.net/manual/en/book.mysqli.php http://php.net/manual/en/book.pdo.php –

這應該指向你在正確的方向：

SELECT 
penalties.id, penalties.type, penalties.time_add, penalties.time_expire, penalties.reason, penalties.inactive, penalties.duration, penalties.admin_id, 
clients.id as target_id, clients.name as target_name, clients.ip as target_ip 
FROM penalties 
LEFT JOIN clients 
ON penalties.client_id = clients.id 
WHERE (penalties.type = 'TempBan' OR penalties.type = 'Ban') AND inactive = 0 
ORDER BY penalties.id DESC

來源

2013-07-02 17:44:44

難道這隻會返回騙子的名字嗎？ – xQbert

你有兩個邏輯從處罰回饋客戶加入。因此，您需要返回兩個連接。一個用於「管理員」的「目標」一個

SELECT penalties.id, penalties.type, penalties.time_add, penalties.time_expire, penalties.reason, 
     penalties.inactive, penalties.duration, penalties.admin_id, target.id as target_id, 
     target.name as target_name, target.ip as target_ip, 
     admin.name 
FROM penalties, clients as target, clients as admin 

WHERE (penalties.type = 'TempBan' OR penalties.type = 'Ban') 
    AND inactive = 0 
    AND penalties.client_id = target.id 
    AND penalties.admin_ID = admin.id 

ORDER BY penalties.id DESC

來源

2013-07-02 17:46:13 xQbert

非常感謝大家，問題解決了。 – W4RL10N

從mySQL數據庫中讀取多個表？

回答

相關問題