我正在使用以下代码从数据库中获取值:
但是当我编写这段代码(测试以查看问题所在...)时,我注意到查询没有从数据库中提取出唯一的值:
以下是查询语句
select distinct(ca.id)as id, acc.name as accName,pIsu.name as pareentIsu, sIsu.name as subIsu ,
dv.domain_value as contractType,acc.id as accId,dvct.domain_value as contractstatus
from contracts_account ca left join business_unit pIsu on ca.parent_isu_fk = pIsu.id
left join business_unit sIsu on ca.sub_isu_fk = sIsu.id
left join business_unit acc on ca.account_fk = acc.id
left join contracts con on con.contracts_account_fk = ca.id
left join domain_values dv on dv.id = con.contract_type_fk
left join domain_values dvct on dvct.id = con.contract_status_fk
where ca.id is not null and con.contract_type_fk in ( 4466079 ) order by ca.id
这个查询根本没有返回给我'Distinct Id''
我做错了什么?
我正在使用Postgres 8.2