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一個人怎麼會寫在LINQ(VB)這個查詢LINQ2SQL與組,並加入
select
g.*
from PROB_GROUP g
inner join
(
select
PGR_NAME,
PGR_PCELL,
max(PGR_VERSION) max_version
from PROB_GROUP
group by PGR_NAME, PGR_PCELL
) grouped_g
on g.PGR_NAME = grouped_g.PGR_NAME
and g.PGR_PCELL = grouped_g.PGR_PCELL
and g.PGR_VERSION = grouped_g.max_version
order by g.PGR_TYPE, g.PGR_NAME
我得到內分組工作 從p在DB.PROB_GROUPs分組依據p.PGR_NAME,p.PGR_PCELL爲G =組選擇PGR_NAME,PGR_PCELL,H_VERSION =栽培大豆(功能(P)p.PGR_VERSION) 但我不能做外部連接 –