Oracle WHERE子句

Question

我有两个SQL语句，如下所示：

SELECT AUDIT_OPTION, SUCCESS, FAILURE
FROM DBA_STMT_AUDIT_OPTS
WHERE AUDIT_OPTION='USER'
AND USER_NAME IS NULL
AND PROXY_NAME IS NULL
AND SUCCESS = 'BY ACCESS'
AND FAILURE = 'BY ACCESS';

和

SELECT AUDIT_OPTION, SUCCESS, FAILURE
FROM DBA_STMT_AUDIT_OPTS
WHERE AUDIT_OPTION='ALTER USER'
AND USER_NAME IS NULL
AND PROXY_NAME IS NULL
AND SUCCESS = 'BY ACCESS'
AND FAILURE = 'BY ACCESS';

正如您所看到的，只有WHERE Clause值发生了变化。我的问题是我如何混合这两个陈述，以便我可以同时得到结果

谢谢

Answer 1

一个选项是UNION (ALL)这两个SELECT，或修改AUDIT_OPTION并包含这两个选项，例如

SELECT audit_option, success, failure
  FROM dba_stmt_audit_opts
 WHERE     audit_option IN ('USER', 'ALTER USER')
       AND user_name IS NULL
       AND proxy_name IS NULL
       AND success = 'BY ACCESS'
       AND failure = 'BY ACCESS';

或者，之前提到的UNION：

SELECT audit_option, success, failure
  FROM dba_stmt_audit_opts
 WHERE     audit_option = 'USER'
       AND user_name IS NULL
       AND proxy_name IS NULL
       AND success = 'BY ACCESS'
       AND failure = 'BY ACCESS'
UNION ALL
SELECT audit_option, success, failure
  FROM dba_stmt_audit_opts
 WHERE     audit_option = 'ALTER USER'
       AND user_name IS NULL
       AND proxy_name IS NULL
       AND success = 'BY ACCESS'
       AND failure = 'BY ACCESS';