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POSQL 2008 stored proc returns nothing if CROSS APPLY is nothing. How can I fix?
 

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  1. POSQL 2008 stored proc returns nothing if CROSS APPLY is nothing. How can I fix?
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    <p>The below stored proc returns data from a number of related tables and also does a cross apply on the votes table. This cross apply returns an average of all truthfulness values in the truthid column associated with a particular articleid and the same for the relevanceid column. This works great except for when there are no votes yet cast for a particular articleid. In this case the stored proc returns nothing at all. Can anyone think of a good way to solve this issue given I don't want to fudge a record in the votes table? </p> <p>( @ArticleID int ) </p> <pre><code>AS BEGIN WITH Article AS ( SELECT tbrm_Article.ArticleID, tbrm_Article.CountryID, tbrm_Article.CategoryID, tbrm_Article.Title, tbrm_Article.ArticleDetail, tbrm_Article.Source, tbrm_Article.ArticleDateTimeAdded, tbrm_Article.UserId, tbrm_Article.ViewCount, tbrm_Article.CommentCount, tbrm_CountryList.CountryName AS CountryName, tbrm_CategoryList.CategoryName AS CategoryName, aspnet_Users.UserName AS UserName, Truthfulness, Relevance FROM tbrm_Article INNER JOIN tbrm_CountryList ON tbrm_Article.CountryID = tbrm_CountryList.CountryID INNER JOIN tbrm_CategoryList ON tbrm_Article.CategoryID = tbrm_CategoryList.CategoryID INNER JOIN aspnet_Users ON tbrm_Article.UserID = aspnet_Users.UserID CROSS APPLY ( SELECT tbrm_Votes.ArticleID, AVG(tbrm_Votes.TruthID), AVG(tbrm_Votes.RelevanceID) FROM tbrm_Votes WHERE tbrm_Article.ArticleID = tbrm_Votes.ArticleID GROUP BY tbrm_Votes.ArticleID ) AS Votes(ArticleID,Truthfulness,Relevance) WHERE tbrm_Article.ArticleID = @ArticleID) SELECT * FROM Article END </code></pre>
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