關於記錄集的select語句的問題

我正在做一個使用dreamweaver的項目，並且遇到了與select語句搭配的問題。我有這個關於記錄集的select語句的問題

SELECT * 
    FROM client, `statement` 
    WHERE client.client_id = `statement`.client_id

當我執行這一點，選擇數據庫中的每個人。所以我想爲這個查詢添加另一個WHERE語句，這次比較client.username和會話變量「MM_Username」。

所以我在看這樣的事情

SELECT * 
    FROM client, `statement` 
    WHERE client.client_id = `statement`.client_id AND WHERE client.username = '$_SESSION['MM_Username']'

會話PHP代碼如下

<?php 
if (!isset($_SESSION)) { 
    session_start(); 
} 
$MM_authorizedUsers = ""; 
$MM_donotCheckaccess = "true"; 

// *** Restrict Access To Page: Grant or deny access to this page 
function isAuthorized($strUsers, $strGroups, $UserName, $UserGroup) { 
    // For security, start by assuming the visitor is NOT authorized. 
    $isValid = False; 

    // When a visitor has logged into this site, the Session variable MM_Username set equal to their username. 
    // Therefore, we know that a user is NOT logged in if that Session variable is blank. 
    if (!empty($UserName)) { 
    // Besides being logged in, you may restrict access to only certain users based on an ID established when they login. 
    // Parse the strings into arrays. 
    $arrUsers = Explode(",", $strUsers); 
    $arrGroups = Explode(",", $strGroups); 
    if (in_array($UserName, $arrUsers)) { 
     $isValid = true; 
    } 
    // Or, you may restrict access to only certain users based on their username. 
    if (in_array($UserGroup, $arrGroups)) { 
     $isValid = true; 
    } 
    if (($strUsers == "") && true) { 
     $isValid = true; 
    } 
    } 
    return $isValid; 
} 

$MM_restrictGoTo = "myflog.php"; 
if (!((isset($_SESSION['MM_Username'])) && (isAuthorized("",$MM_authorizedUsers, $_SESSION['MM_Username'], $_SESSION['MM_UserGroup'])))) { 
    $MM_qsChar = "?"; 
    $MM_referrer = $_SERVER['PHP_SELF']; 
    if (strpos($MM_restrictGoTo, "?")) $MM_qsChar = "&"; 
    if (isset($_SERVER['QUERY_STRING']) && strlen($_SERVER['QUERY_STRING']) > 0) 
    $MM_referrer .= "?" . $_SERVER['QUERY_STRING']; 
    $MM_restrictGoTo = $MM_restrictGoTo. $MM_qsChar . "accesscheck=" . urlencode($MM_referrer); 
    header("Location: ". $MM_restrictGoTo); 
    exit; 
} 
?>

來源

2013-01-17 Ayodele Ayobami

不應該有另一個WHERE;你AND連接您的條件：

WHERE client.client_id = `statement`.client_id AND client.username = '$_SESSION['MM_Username']'

欲瞭解更多信息，請參閱您正在使用的SELECT查詢語法SQL引擎的SQL語法定義。

來源

2013-01-17 09:43:24

SELECT * FROM client，statement WHERE client.client_id = statement .client_id AND client.username ='$ _SESSION ['MM_Username']';

或 $ user_name = $ _ SESSION ['MM_Username']; SELECT * FROM客戶機c，語句s WHERE c.client_id = s.client_id AND c.username ='$ user_name';

試試這個查詢

來源

2013-01-17 12:42:05 suman

關於記錄集的select語句的問題

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