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POTried converting sql query to linq, however, I get different results
 

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  1. POTried converting sql query to linq, however, I get different results
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    <p>I am trying to convert an sql statement to linq, but maybe I am doing something wrong because I'm getting different results. I am trying my linq statement in LinqPad.</p> <p><b>Here is my sql statment:</b></p> <pre><code>SELECT set_id FROM TestTable WHERE rec_id In (25,32) AND set_id NOT IN ( SELECT x.set_id FROM TestTable x WHERE x.rec_id NOT IN(25,32) ) GROUP BY set_id HAVING COUNT(set_id) = 2 </code></pre> <p><b> Linq statment: </b></p> <pre><code>var recIdList = new List&lt;int?&gt;() { 25,32}; var query = from u in TestTables where ( recIdList.Contains(u.Rec_id) &amp;&amp; !(from k in TestTables where !recIdList.Contains(u.Rec_id) select k.Set_id).Contains(u.Set_id) ) group u by u.Set_id into userGroup where userGroup.Count() == recIdList.Count select userGroup.Key; query.Dump(); TestTables.Dump(); </code></pre> <p>The sql query generated by Linq:</p> <pre><code>-- Region Parameters DECLARE @p0 Int = 25 DECLARE @p1 Int = 32 DECLARE @p2 Int = 25 DECLARE @p3 Int = 32 DECLARE @p4 Int = 2 -- EndRegion SELECT [t2].[set_id] FROM ( SELECT COUNT(*) AS [value], [t0].[set_id] FROM [TestTable] AS [t0] WHERE ([t0].[rec_id] IN (@p0, @p1)) AND (NOT (EXISTS( SELECT NULL AS [EMPTY] FROM [TestTable] AS [t1] WHERE ([t1].[set_id] = [t0].[set_id]) AND (NOT ([t0].[rec_id] IN (@p2, @p3))) ))) GROUP BY [t0].[set_id] ) AS [t2] WHERE [t2].[value] = @p4 </code></pre> <p>TestTable:</p> <pre><code>Create Table TestTable ( set_id int, rec_id int ) Insert Into TestTable (set_id, rec_id) Values(10, 1) Insert Into TestTable (set_id, rec_id) Values(10, 25) Insert Into TestTable (set_id, rec_id) Values(10, 32) Insert Into TestTable (set_id, rec_id) Values(20, 61) Insert Into TestTable (set_id, rec_id) Values(20, 90) Insert Into TestTable (set_id, rec_id) Values(30, 77) Insert Into TestTable (set_id,rec_id) Values(11,25) Insert Into TestTable (set_id,rec_id) Values(11,32) GO </code></pre> <p>The result for my Sql query: set_id 11 <br/> The result for my Linq query: set_id (10 and 11)</p> <p>The idea is I am trying to get the set_id where the the rec_id is exactly (set_id 11: (25,32)), however (set_id 10: (1,25,32)) is not an exact match.</p> <p>I've added two images that shows the result set for both using LinqPad:</p> <p><a href="https://skydrive.live.com/?cid=3A6FFF199D5185F9&amp;id=3A6FFF199D5185F9!151&amp;sc=photos" rel="nofollow">SqlStatmentWithResultSet</a> <br/> <a href="https://skydrive.live.com/?cid=3a6fff199d5185f9#!/?cid=3a6fff199d5185f9&amp;sc=photos&amp;uc=2&amp;id=3A6FFF199D5185F9!150!cid=3A6FFF199D5185F9&amp;id=3A6FFF199D5185F9!152&amp;sc=photos" rel="nofollow">LinqStatmentWihtResultSet</a></p> <p>Thanks in advance for you help...</p>
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    1. USEyo
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      1. POTried converting sql query to linq, however, I get different results
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    1. COIn your LINQ statement, in the subquery, you have "!recIdList.Contains(u.Rec_id)". Should this not be testing for k.Rec_id?
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      1. POTried converting sql query to linq, however, I get different results
      1. USMiika L.
    2. COThank you very much :$ ... That did it :) :$
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    3. COHow can I mark the question as answered ??? This is my second questio in stackoverflow :O
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      1. USEyo
 

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