Question

如何选择具有给定IP和名称“admin”的记录？

我有这个用于IP，但觉得这不是分组范围的最佳方式。如评论中所述，我想选择可能具有IP的“名称”：“x”或“y”或“z”

SELECT DISTINCT (name) AS name
FROM  `log` 
WHERE  `ip` =  '08.88.16.98'
OR  `ip` =  '03.12.27.226'
OR  `ip` =  '03.23.113.116'
OR  `ip` =  '06.204.69.183'
OR  `ip` =  '07.31.0.209'

Answer 1

使用IN子句代替OR语句：

SELECT DISTINCT (name) AS name
FROM  log 
WHERE ip
IN ('08.88.16.98','03.12.27.226','03.23.113.116','06.204.69.183','07.31.0.209')
AND name = 'admin';

IN运算符允许您在WHERE中指定多个值子句。

正如旁注，如果要排除值，可以在NOT子句之前使用IN子句，例如：

NOT IN ('08.88.16.98','03.12.24.254','03.23.113.189');

请在此处详细了解：IN (Transact-SQL)

Answer 2

您可以为所需的IP地址添加新表。给它ips。然后加入两个表：

SELECT DISTINCT (name) AS name
FROM  `log` 
JOIN `ips` ON (log.ip = ips.ip);

用于选择IP和名称范围的SQL查询

2 个答案: