[英]How do I do a sub-select in LINQ?
我是SQL Server的新手,任何機構都可以幫助我如何用LINQ編寫此查詢。
SELECT [Plan_Num]
,(select top 1 ba_level_code + ' - ' + ba_level_desc from baLevel where ba_level_code = '0' + Level_Num) as [Level]
,(select top 1 cast(Column_Num as varchar) + ' - ' + Column_Description from baPlanColumnStructure where Column_Num = CL.Column_Num) as [Column]
,[Sort_Order]
FROM baCodeLibrary CL where code_id = 25468 and isactive = 1 order by [Plan_num]
謝謝
您正在尋找這樣的東西
var query = from cl in context.BaCodeLibrary
where cl.code_id == 25468 && cl.isactive == 1
orderby cl.Plan_num
select new
{
Level = (from ba in context.baLevel
where ba.ba_level_code == ("0" + ba.Level_Num)
select ba.ba_level_code + " - " + ba.ba_level_desc).Take(1),
Column = (from ba in context.baPlanColumnStructure
where ba.Column_Num == cl.Column_Num
select ba.ba_level_code + " - " + ba.ba_level_desc).Take(1),
Sort_Order = cl.Sort_Order
}
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