Need to convert the follwing sql to LINQ

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How do I convert the following sql to LINQ

SQL

SELECT *
FROM
(
SELECT ROW_NUMBER() OVER (PARTITION BY CPT4, CPT4MOD, ITEMCHARGE ORDER BY EFF_DATE DESC) AS RowNo
    , *
FROM #table
) AS T
WHERE T.RowNo = 1

Posted 22-Dec-14 3:21am

Arya440

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Comments

PIEBALDconsult 22-Dec-14 9:30am

Why? If it ain't broke why break it?

Arya440 22-Dec-14 9:34am

Because I am not supposed to write SQL code in my application. I can only write LINQ, which I don't know well.

PIEBALDconsult 22-Dec-14 9:47am

Who says?

Sinisa Hajnal 22-Dec-14 9:48am

If you have to learn it, better convert it yourself. You'll get the knowledge faster then if you ask the question every time. Especially if that is for the whole application.

Sinisa Hajnal 22-Dec-14 9:50am

You already asked the question about getting only max eff_date...didn't you?

Maciej Los 22-Dec-14 12:51pm

VB.NET, C#, ...?

Arya440 23-Dec-14 2:28am

C#

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Maciej Los · Answer 1 · 2014-12-22T20:55:00

Let's say dataContainer is your container for data:

C#

List<yourdataclass> = dataContainer.OrderByDescending(x=>x.EFF_DATE).Select((x, i)=>new{
    Index = i+1,
    CPT4 = x.CPT4,
    CPT4MOD = x.CPT4MOD,
    ITEMCHARGE = x.ITEMCHARGE,
    EFF_DATE = x.EFF_DATE
    }).Where(x=>x.Index==1).ToList();</yourdataclass>