Rewriting SQL to LINQ [duplicate] - sql

Question

This question already has answers here:
How can you handle an IN sub-query with LINQ to SQL?
(9 answers)
Closed 6 years ago.
I'm completely new to LINQ, i want to rewrite some of mine SQL querys into LINQ (just to learn) and i'v already stuck at the beginning.
Here is SQL query :
declare #typMon varchar(200)
set #typMon = 'moneta'
select *
from [db1].[dbo].[Picking]
where number = 1000
and Group IN (Select grupa
from [db2].[dbo].[groups]
where typ = #typMon)
Subquery returns 3 output rows : http://i.stack.imgur.com/CDOwr.png
And here is what i'v write in LINQ
This part works ok :
var query = from x in db.grupyTowarowes
where x.typ == typMoneta
select new
{
x.grupa
};
Problem is here:
var test = from z in dbContext.PICKINGs
where z.Number == 1000
&& z.group IN output from 1st query
select new
{
z.id
};

Answer 1

var test = from z in dbContext.TBL_CSV_PICKINGs
join g in db.grupyTowarowes on Z.group equals g.grupa
where z.Number == 1000 &&
g.typ == typMoneta
select new { z.id };
Or in the Method syntax
dbContext.TBL_CSV_PICKINGs
.Where(z => z.Number == 1000)
.Join(db.grupyTowarowes.Where(g => g.typ == typMoneta)
z => z.group,
g => g.grupa,
(z,g) => z.id);