如何在sql表中选择数据时忽略重复项

Question

我在表中有两行，它们在两列中具有相同的值。

我如何只选择其中一行。

Id       IP Address      Page       Datetime              Country   Region  
1506    64.233.172.146  /index.php  2017-05-12 15:02:57   India Telangana
1507    64.233.172.146  /about.php  2017-05-12 15:02:59   India Telangana
1508    64.233.172.146  /index.php  2017-05-12 15:03:01   India Telangana
1506    64.233.172.146  /contact.php2017-05-12 15:05:04   India Telangana

我希望输出为

Id       IP Address      Page       Datetime              Country   Region  
1506    64.233.172.146  /index.php  2017-05-12 15:02:57   India Telangana
1507    64.233.172.146  /about.php  2017-05-12 15:02:59   India Telangana
1506    64.233.172.146  /contact.php2017-05-12 15:05:04   India Telangana