MySQL 联合子查询

Question

我有以下查询，selecting 在这 2 个子查询中找到的行：

第一个子查询是获取车辆，第二个是获取司机。

第一个 select 是从两个子查询中获取值。

select
        department as "Delegación",
        company as Compañía,
        count(distinct idClientTruck) as Vehículos,
        round(sum(v_ko)/(v_docs*count(distinct idClientTruck))*100) as "% Docs. Vehículos",
        count(distinct idDriver) as Conductores,
        round(sum(d_ko)/(d_docs*count(distinct idDriver))*100) as "% Docs. Conductores"
        from
        (
            (select     
                cd.name as department,
                c.businessname as company, 
                (select count(*) from widoc_config where idwidocconfiggroup=cfg_g.idwidocconfiggroup and idstatus=71001 and required=true) as v_docs, 
                wv.idClientTruck as idClientTruck, 
                cfg.idwidocconfig as idWidocConfig, 
                cfg.iddocument as idDocument, 
                a.idstatus as idStatus, 
                if(a.idstatus=43002,"0","1") as v_ko 
            from
                widoc_config_group cfg_g
                join widoc_config cfg on cfg.idwidocconfiggroup=cfg_g.idwidocconfiggroup and cfg.idstatus=71001 and cfg.required=true
                join widoc_client wc on wc.idclient=cfg_g.idclient and wc.idstatus=71001
                join client c on c.idclient=wc.idclientassociated and c.idstatus_client=5004
                join widoc_vehicle wv on wv.idwidocclient=wc.idwidocclient and wv.idstatus=71001
                join client_truck t on t.idclient_truck=wv.idclienttruck and t.idstatus_truckpart=33005
                join widoc_fulfill_vehicle fv on fv.idwidocconfiggroup=cfg_g.idwidocconfiggroup and fv.idwidocvehicle=wv.idwidocvehicle
                left join attachment_group a on a.idclient=wc.idclientAssociated and a.iddocument=cfg.iddocument and a.idstatus!=43004 and a.idFK=wv.idClientTruck
                left join client_department cd on cd.idClientDepartment=wc.idClientDepartment and cd.idStatus=71001         
            where 
                cfg_g.idclient = 3683
                and cfg_g.identitytype=73004
                and cfg_g.idstatus=71001
            ) x

            UNION

            (select 
                cd.name as department,
                c.businessname as company, 
                (select count(*) from widoc_config where idwidocconfiggroup=cfg_g.idwidocconfiggroup and idstatus=71001 and required=true) as d_docs, 
                wd.idDriver as idDriver, 
                cfg.idwidocconfig as idWidocConfig, 
                cfg.iddocument as idDocument, 
                a.idstatus as idStatus, 
                if(a.idstatus=43002,"0","1") as d_ko
            from 
                widoc_config_group cfg_g
                join widoc_config cfg on cfg.idwidocconfiggroup=cfg_g.idwidocconfiggroup and cfg.idstatus=71001 and cfg.required=true
                join widoc_client wc on wc.idclient=cfg_g.idclient and wc.idstatus=71001
                join client c on c.idclient=wc.idclientassociated and c.idstatus_client=5004
                join widoc_driver wd on wd.idwidocclient=wc.idwidocclient and wd.idstatus=71001
                join driver d on d.iddriver=wd.iddriver and d.idstatus=71001
                join widoc_fulfill_driver fd on fd.idwidocconfiggroup=cfg_g.idwidocconfiggroup and fd.idwidocdriver=wd.idwidocdriver
                left join attachment_group a on a.idclient=wc.idclientAssociated and a.iddocument=cfg.iddocument and a.idstatus!=43004 and a.idFK=wd.idDriver
                left join client_department cd on cd.idClientDepartment=wc.idClientDepartment and cd.idStatus=71001
            where 
                cfg_g.idclient = 3683
                and cfg_g.identitytype=73004
                and cfg_g.idstatus=71001
            ) y
        ) group by department,company;

但是我得到这个错误：

Error Code: 1064. You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'y ) group by department,company' at line 60

谁能帮我找出这个错误？谢谢！

Answer 1

参与 UNION 的 2 个查询不需要别名，但联合查询确实需要别名：

select
        department as "Delegación",
        company as Compañía,
        count(distinct idClientTruck) as Vehículos,
        round(sum(v_ko)/(v_docs*count(distinct idClientTruck))*100) as "% Docs. Vehículos",
        count(distinct idDriver) as Conductores,
        round(sum(d_ko)/(d_docs*count(distinct idDriver))*100) as "% Docs. Conductores"
        from
        (
            select     
                cd.name as department,
                c.businessname as company, 
                (select count(*) from widoc_config where idwidocconfiggroup=cfg_g.idwidocconfiggroup and idstatus=71001 and required=true) as v_docs,   
                wv.idClientTruck as idClientTruck, 
                null as idDriver,
                cfg.idwidocconfig as idWidocConfig, 
                cfg.iddocument as idDocument, 
                a.idstatus as idStatus, 
                if(a.idstatus=43002,"0","1") as v_ko 
            from
                widoc_config_group cfg_g
                join widoc_config cfg on cfg.idwidocconfiggroup=cfg_g.idwidocconfiggroup and cfg.idstatus=71001 and cfg.required=true
                join widoc_client wc on wc.idclient=cfg_g.idclient and wc.idstatus=71001
                join client c on c.idclient=wc.idclientassociated and c.idstatus_client=5004
                join widoc_vehicle wv on wv.idwidocclient=wc.idwidocclient and wv.idstatus=71001
                join client_truck t on t.idclient_truck=wv.idclienttruck and t.idstatus_truckpart=33005
                join widoc_fulfill_vehicle fv on fv.idwidocconfiggroup=cfg_g.idwidocconfiggroup and fv.idwidocvehicle=wv.idwidocvehicle
                left join attachment_group a on a.idclient=wc.idclientAssociated and a.iddocument=cfg.iddocument and a.idstatus!=43004 and a.idFK=wv.idClientTruck
                left join client_department cd on cd.idClientDepartment=wc.idClientDepartment and cd.idStatus=71001         
            where 
                cfg_g.idclient = 3683
                and cfg_g.identitytype=73004
                and cfg_g.idstatus=71001
            UNION
            select 
                cd.name as department,
                c.businessname as company, 
                (select count(*) from widoc_config where idwidocconfiggroup=cfg_g.idwidocconfiggroup and idstatus=71001 and required=true) as d_docs, 
                null as idClientTruck,
                wd.idDriver as idDriver, 
                cfg.idwidocconfig as idWidocConfig, 
                cfg.iddocument as idDocument, 
                a.idstatus as idStatus, 
                if(a.idstatus=43002,"0","1") as d_ko
            from 
                widoc_config_group cfg_g
                join widoc_config cfg on cfg.idwidocconfiggroup=cfg_g.idwidocconfiggroup and cfg.idstatus=71001 and cfg.required=true
                join widoc_client wc on wc.idclient=cfg_g.idclient and wc.idstatus=71001
                join client c on c.idclient=wc.idclientassociated and c.idstatus_client=5004
                join widoc_driver wd on wd.idwidocclient=wc.idwidocclient and wd.idstatus=71001
                join driver d on d.iddriver=wd.iddriver and d.idstatus=71001
                join widoc_fulfill_driver fd on fd.idwidocconfiggroup=cfg_g.idwidocconfiggroup and fd.idwidocdriver=wd.idwidocdriver
                left join attachment_group a on a.idclient=wc.idclientAssociated and a.iddocument=cfg.iddocument and a.idstatus!=43004 and a.idFK=wd.idDriver
                left join client_department cd on cd.idClientDepartment=wc.idClientDepartment and cd.idStatus=71001
            where 
                cfg_g.idclient = 3683
                and cfg_g.identitytype=73004
                and cfg_g.idstatus=71001
        ) t group by department,company;

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