Sql别名未提供连接的预期结果
这是我的sql查询:Sql别名未提供连接的预期结果,sql,sql-server,Sql,Sql Server,这是我的sql查询: Select 'P'+(cast(p.Id as varchar)) as SolrId, (Select lp.LocaleValue where LanguageId=3 and lp.EntityId=p.Id) as fr_Name , (Select lp.LocaleValue where LanguageId=2) as hi_Name, (Select lp.LocaleValue where LanguageId=4) as nl_Name,* fr
Select 'P'+(cast(p.Id as varchar)) as SolrId,
(Select lp.LocaleValue where LanguageId=3 and lp.EntityId=p.Id) as fr_Name ,
(Select lp.LocaleValue where LanguageId=2) as hi_Name,
(Select lp.LocaleValue where LanguageId=4) as nl_Name,* from Product p
LEft Join LocalizedProperty lp on EntityId=p.Id
我得到了这个结果,但是
我想像这样获取数据
有人能帮我吗?加入lp并给它4个不同的别名
select lp1.LocalValue, lp2.Localvalue from lp lp1
join lp lp2 on lp1.pId = lp2.pId
where
lp1.Languageid = 3 and lp2.Languageid = 2
我只想使用条件聚合:
Select 'P' + (cast(p.Id as varchar(255))) as SolrId,
max(case when lp.LanguageId = 3 then lp.LocaleValue end) as fr_name,
max(case when lp.LanguageId = 2 then lp.LocaleValue end) as hi_name,
max(case when lp.LanguageId = 4 then lp.LocaleValue end) as nl_name
from Product p left join
LocalizedProperty lp
on lp.EntityId = p.Id
group by p.id;
这很好用
Select 'P' + (cast(p.Id as varchar(255))) as SolrId,(cast(p.Name as varchar(MAX))) as Name,
max(case when lp.LanguageId = 3 then lp.LocaleValue end) as fr_name,
max(case when lp.LanguageId = 2 then lp.LocaleValue end) as hi_name,
max(case when lp.LanguageId = 4 then lp.LocaleValue end) as nl_name,
max(case when lp.LanguageId = 4 then lp.LocaleValue end)
from Product p left join
LocalizedProperty lp
on lp.EntityId = p.Id
group by p.id,p.Name
这似乎是SQL Server,所以我添加了标记。不,这个想法在我的上下文中不起作用。我想要所有产品列。我得到了这个错误