[英]Including values from external table in a LINQ statement
我想為以下SQL查詢編寫LINQ查詢:
SELECT A.ID
FROM TABLE_1 A, TABLE_2 B
WHERE A.ID = B.ID
AND B.STATEID IN (SELECT C.STATEID FROM STATE C WHERE C.REGIONID = 1)
為此,我設法進行以下查詢:
var var1 = (from a in db.table_1
join b in db.table_2
on a.Id equals b.Id
where b.stateid =
select new
{
a.Id
}).ToList();)
在這里,我如何包含RegionId為1的所有StateID以獲得必要的輸出。
您等效的Linq查詢將是:
var result = (from a in db.table_1
from b in db.table_2
where a.Id == b.Id
&& db.State.Any(c=>c.REGIONID == 1 && b.StateId == c.StateId)
select new
{
a.Id
}).ToList();
您可以使用任何 :-
where db.States.Any(x => x.RegionId == 1 && x.StateId == b.StateId)
select...
你可以試試看
var var1 = (from a in db.table_1
join b in db.table_2
on a.Id equals b.Id
where db.State.Any(c=> c.RegionId == 1 && c.StateId == b.StateId)
select new
{
a.Id
}).ToList();)
嘗試這個,
var var1 = (from a in db.table_1
join b in db.table_2
on a.Id equals b.Id
where (db.State.Where(x => x.RegionId == 1).Select(x =>
x.StateId)).Contains(b.Id)
select new
{
a.Id
}).ToList();)
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.