如何使用 PHP 從 Oracle 中選擇數據

Question

我使用 ORACLE 來選擇鎖定表的用戶，查詢工作正常，但是當我嘗試檢索結果時，拋出了一個錯誤。

$c = ' SELECT oracle_username os_user_name, locked_mode, object_name, object_type FROM V$LOCKED_OBJECT lo,DBA_OBJECTS do'." WHERE lo.object_id = do.object_id AND do.object_name='CLIENTS'";

$s = oci_parse($conn_s, $c );
    oci_execute($s);


    while($res = oci_fetch_array($s, OCI_ASSOC+OCI_RETURN_NULLS)){
        //var_dump($res);
        $check = $res['OS_USER_NAME'];
    }
echo $check;

我如何檢索值；

Answer 1

你應該有一個逗號oracle_username os_user_name,像這樣：

$c = ' SELECT oracle_username, os_user_name, locked_mode, object_name, object_type FROM V$LOCKED_OBJECT lo,DBA_OBJECTS do'." WHERE lo.object_id = do.object_id AND do.object_name='CLIENTS'";

Answer 2

如果您使用兩個不同的表並且您正在檢索列名，我們想告訴數據庫我們想要選擇哪個表列。 例如 lo.oracle_username、do.os_user_name。

$c = "SELECT oracle_username, os_user_name, locked_mode, object_name, object_type FROM V$LOCKED_OBJECT lo,DBA_OBJECTS do WHERE lo.object_id = do.object_id AND do.object_name='CLIENTS'";

$s = oci_parse($conn_s, $c );
  $res = oci_execute($s);


    while($res = oci_fetch_array($s, OCI_ASSOC+OCI_RETURN_NULLS)){
        //var_dump($res);
        $check = $res['OS_USER_NAME'];
    }
echo $check;