Question

我从两个表中获取数据。但我得到了不必要的重复，所以我希望distinct关键字只获得不同的记录，但它不起作用

SELECT distinct fb_event.id AS rid, fb_event.eventname AS sevntname,
     fb_event.location AS slocation, fb_event.startdate AS sstartdate,
     fb_event.enddate AS senddate,
                          cast(fb_event.CATEGORY as text) AS sCATEGORY, cast(fb_event.tags as text) AS stags,
                                              cast(fb_event.description as text) AS sdescription, 
                                            cast(fb_event.eventid as text) AS seventid,
                                            cast(fb_event.city as text) AS scity, cast(fb_event.venue as text) AS svenue,
                                            cast(fb_event.country as text) AS scountry, cast(fb_event.postalcode as text) AS spostalcode,
                                            cast(fb_event.keyword as text) AS skeyword,
                          cast(fb_userevents.userid as text) AS suserid,fb_event.longitude as long, fb_event.altitude as alt,fb_event.attending
     FROM fb_event INNER JOIN
     fb_userevents ON fb_event.eventid = fb_userevents.eventid order by fb_event.eventid

错误：消息145，第15级，状态1，第1行如果指定了SELECT DISTINCT，则ORDER BY项必须出现在选择列表中。

我缺少什么。非常感谢任何形式的帮助。

Answer 1

正如astlander所提到的，如果您按特定字段进行排序，则该字段必须在select语句中列出。将* fb_event.eventid *添加到您的选择中，您的选择语句应该没问题。

SQL distinct关键字问题

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