SQL subquery invalid in the select list -

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i working on below code recursively same table getting error

*column 'checkinout.userid' invalid in select list because not contained in either aggregate function or group clause.*

*column 'checkinout.checktime' invalid in select list because not contained in either aggregate function or group clause.*

select convert(varchar,checktime, 106) gatedate, convert(varchar,checktime, 106) gatein ,(     select top 1 convert(varchar(5),ch001.checktime, 108)      checkinout ch001     checktype ='i'          , ch001.userid= mm001.userid            ,          (convert(varchar, ch001.checktime, 112) =convert(varchar, mm001.checktime, 112)) ) timein   checkinout mm001 userid=@empid 

select convert(varchar,checktime, 106) gatedate, convert(varchar,checktime, 106) gatein ,(     select top 1 convert(varchar(5),ch001.checktime, 108)      checkinout ch001     checktype ='i'          , ch001.userid= mm001.userid            ,          (convert(varchar, ch001.checktime, 112) =convert(varchar, mm001.checktime, 112)) ) timein   checkinout mm001 userid=@empid group checkinout.userid, checkinout.checktime

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