LEFT JOIN 来自同一行的多行 table | SQL 服务器 2012

Question

我对这个查询有疑问。我不知道如何解决这个问题，因为数据在同一列中，只能用标签 I 和 O 分隔。我将如何处理这个？这可以通过多个 LEFT JOIN 实现吗？

SELECT
CHECKINOUT.userid as chkuserid, USERINFO.userid as usruserid, name, 
BADGENUMBER as badge,
LEFT(CONVERT(varchar, CHECKTIME, 23),11) as logindate,checktype,
Format(cast(RIGHT(CHECKTIME,12) as datetime),'HH:mm:ss') AS timestamp
from CHECKINOUT,USERINFO
where CHECKINOUT.userid=USERINFO.userid
and BADGENUMBER = '1693'

这就是查询的样子。

我想要实现的是它看起来像这样。

我可以就此事寻求帮助吗？

Answer 1

这个怎么样。

select t1.*, t2.checktype, t2.timestamp from 
    (SELECT
    CHECKINOUT.userid as chkuserid, USERINFO.userid as usruserid, name, 
    BADGENUMBER as badge,
    LEFT(CONVERT(varchar, CHECKTIME, 23),11) as logindate,checktype,
    Format(cast(RIGHT(CHECKTIME,12) as datetime),'HH:mm:ss') AS timestamp
    from CHECKINOUT,USERINFO
    where CHECKINOUT.userid=USERINFO.userid
    and BADGENUMBER = '1693' and  checktype = 'I') as t1
left join
    (select CHECKINOUT.userid as chkuserid, checktype, LEFT(CONVERT(varchar, CHECKTIME, 23),11) as logindate,
        Format(cast(RIGHT(CHECKTIME,12) as datetime),'HH:mm:ss') AS timestamp
    from CHECKINOUT,USERINFO
    where CHECKINOUT.userid=USERINFO.userid
    and BADGENUMBER = '1693' and  checktype = '0')) as t2 on t2.chkuserid = t1.chkuserid
        and t2.logindate = t1.logindate

LEFT JOIN 来自同一行的多行 table | SQL 服务器 2012

LEFT JOIN Multiple rows from the same table | SQL SERVER 2012

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