如何使用PHP从Oracle中选择数据

Question

我使用ORACLE选择锁定表的用户，查询工作正常，但是当我尝试检索结果时，抛出一个错误。

$c = ' SELECT oracle_username os_user_name, locked_mode, object_name, object_type FROM V$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;

我该如何检索这些值;

Answer 1

你应该有这样的逗号oracle_username 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'";

Answer 2

如果您使用两个不同的表并且正在检索列名，我们希望告诉数据库我们要选择哪个表列。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;