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select a.*,SUM(1) as icount from identitys as a left join star as b
on CHARINDEX(','+ltrim(a.id)+',',','+b.IDS+',')>0
group by a.id,a.idname order by a.id
select ID,iname,COUNT(Star.SID) from Identitys
left join Star on charindex (','+CAST(id as varchar)+',',','+ids+',')>0
group by ID,iname
SELECT T1.ID,T1.IName,COUNT(T2.SID)ICount
FROM Identitys T1
LEFT JOIN Star T2 ON ','+T2.IDS+','LIKE '%,'+CAST(T1.ID AS VARCHAR(10))+',%'
GROUP BY T1.ID,T1.IName