Following section demonstrates using <hl>JOIN</hl> clause.
<sample>
    <pre lang="c#">
		// Table Aliases
        var t0 = new Orders().AsQueryable();
        var t1 = new OrderDetails().AsQueryable();
		
		Odb.SQL.Select(x => 
			    x.From(t0)
			     .ExcludeFields(t1.OrderID)
			     .LeftJoin(t1, t1.OrderID == t0.OrderID) 
			     .Where( t0.OrderID > 1500 &amp; ((object)t1.Note != DbNull.Value))
		);
    </pre>
    <output>
        SELECT t0.*, t1.OrderDetailID, t1.ProductID, t1.Quantity <br />
        FROM [Orders] AS t0 <br />
        <hlb>
            LEFT JOIN [OrderDetails] AS t1 <br />
            ON (t1.OrderID = t0.OrderID)
        </hlb> <br />
        WHERE ((t0.OrderID > 1500) AND (t1.Note IS NOT NULL))
    </output>
    <fiddle>yC1v0t</fiddle>
</sample>