小编gue*_*est的帖子

我有 4 个子查询，每个子查询都按“组名”分组。尝试将每个子查询作为一个列，全部按“组名”分组。这是查询：

select  
    coalesce(co.group_name, requests.group_Name, incidents.group_Name, problems.group_Name) as 'SD Groups'
    , isnull(co.co, '') as 'CO'
    , isnull(incidents.incidents, '' ) as 'Inc'
    , isnull(problems.problems, '') as 'Prob'
    , isnull(requests.requests, '') as 'Rqst'
from
    (
    select 
        groups.last_name AS Group_Name   
        ,count(chg_ref_num)  AS 'CO'
    from chg
    left join   ca_contact groups 
        on chg.group_id = groups.contact_uuid 
    left join   ca_contact assignee 
        on chg.assignee = assignee.contact_uuid 
    left join   ca_company cc 
        on  assignee.company_uuid = cc.company_uuid                       
    where   
        groups.last_name in ('8197 Qlikview Support', '8202 OBIEE-BIP'
                        , '8205 BI SAS', '8206 …