无法格式化SQL Quert以获取记录和计数。
SELECT
eventStartDate
,eventTitle
,eventDesc
,eventTime
,count(eventID)
FROM GroupEvents
WHERE eventStartDate = '10/14/2013'
GROUP BY eventStartDate
我想找回记录,以便我可以这样显示... (我可以格式化 - 只显示我需要的东西)
There are 3 events for 10/14/2013
1. Dinner at Anthony's - 5:30pm
2. Movie with New Members - 7:30pm
3. Denny's - 11:00pm
感谢您的帮助
答案 0 :(得分:1)
在SQL Server中,您可以使用Window Function解决此问题:
SELECT
eventStartDate
,eventTitle
,eventDesc
,eventTime
,count(eventID)over(partition by eventStartDate) as eventCount
FROM GroupEvents
WHERE eventStartDate = '10/14/2013'
GROUP BY eventStartDate
答案 1 :(得分:0)
如果您使用的RBDMS不支持窗口函数,则需要分别确定每个事件日期的计数,然后加入此中间结果以获取每个事件的计数和详细信息:
SELECT
ge.eventStartDate
,ge.eventTitle
,ge.eventDesc
,ge.eventTime
,q.eventCount
FROM GroupEvents ge
JOIN (
SELECT
eventStartDate
,count(eventID) AS eventCount
FROM GroupEvents
GROUP BY eventStartDate
) q ON q.eventStartDate = ge.eventStartDate
WHERE ge.eventStartDate = '10/14/2013'