我有一张如下表
+-----+--------------+---------------------+
| id | url | visit_date |
+-----+--------------+---------------------+
| 1 + 60 | 2012-06-23 18:15:49 |
+-----+--------------+---------------------+
| 2 + 60&ref=qr | 2012-06-23 12:15:49 |
+-----+--------------+---------------------+
| 3 + 54 | 2012-06-23 18:15:49 |
+-----+--------------+---------------------+
| 4 + 5 | 2012-06-24 18:15:49 |
+-----+--------------+---------------------+
| 5 + 60 | 2012-06-25 13:15:49 |
+-----+--------------+---------------------+
| 6 + 60 | 2012-06-25 19:15:49 |
+-----+--------------+---------------------+
我只想将结果分组到我的日期。所以结果将是,例如,如果我只想要 60 的 url。
+-------------+------------------+
|visit_date |count(visit_date) |
+-------------+------------------+
| 2012-06-23 | 2 |
+-------------+------------------+
| 2012-06-25 | 2 |
+-------------+------------------+
我尝试了以下方法,但显然由于时差,我得到了每个日期。
SELECT visit_time, COUNT( visit_time )
FROM tracking
WHERE query_string LIKE '%60%'
GROUP BY visit_time
是否可以仅通过忽略时间的日期来执行此操作?