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POLinq - Equivalent to BETWEEN inside a Left Join
 

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    <p>I've seen this topic <a href="https://stackoverflow.com/questions/4054982/between-equivalent-in-linq">BETWEEN EQUIVALENT in LINQ</a></p> <p>My Original Query in SQL:</p> <pre><code>SELECT ISNULL(Tcar.name, '') FROM dbo.models model LEFT JOIN cars Tcar on Tcar.model = model.id AND Tcar.year between model.Start and model.End </code></pre> <p>I need to implement between inside a "left join", I tried this:</p> <p>My Classes:</p> <pre><code>public class car { public string name { get; set; } public int model { get; set; } public DateTime year { get; set; } } public class model { public int id { get; set; } public DateTime Start { get; set; } public DateTime End { get; set; } } </code></pre> <p>My Implementation:</p> <pre><code>var theModel = from model in models join Tcar in cars on new { ID = (int)model.id, DateStart = (DateTime)model.Start, DateEnd = (DateTime)model.End } equals new { ID = (int)Tcar.model, DateStart = (DateTime)Tcar.year, DateEnd = (DateTime)Tcar.year } into tempCar from finalCar in tempCar select new { CAR = (finalCar == null ? String.Empty : finalCar.name) }; </code></pre> <p>WorkAround:</p> <pre><code>var theModel = from model in models join Tcar in cars on model.id equals Tcar.model where model.Start &lt;= Tcar.year &amp;&amp; model.End &gt;= Tcar.year select new { CAR = Tcar.name }; </code></pre> <p>If I use a workaround Linq translate to this query:</p> <pre><code>SELECT Tcar.name FROM dbo.models model LEFT JOIN cars Tcar on Tcar.model == model.id WHERE model.Start &lt;= Tcar.year and model.End &gt;= Tcar.year </code></pre> <p>I can put a simple where before "select new", but I have to implement by this way, with "between" inside the left join, How can I do this ?</p>
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      1. POLinq - Equivalent to BETWEEN inside a Left Join
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      1. POLinq - Equivalent to BETWEEN inside a Left Join
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    1. COTotally unrelated, but you are violating the c# Naming Conventions. =) See here: http://msdn.microsoft.com/en-us/library/xzf533w0(v=vs.71).aspx
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    2. COJeans this is a simple example to show for community.
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    3. COSure. =) I just find code easier for me to understand if it looks familiar.
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