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    <p>I finally figured out a way to do this. Basically, get the generated SQL from the Entity Framework, LINQ-to-SQL, or another ORM, then parse the WHERE clause. That way I don't have to parse the lambda manually. Then create an UPDATE clause from an anonymous type. The result looks like:</p> <pre><code>Update&lt;Task&gt;( new { UserID = 1, TaskCount = IncrementOf(1), SomeOtherField = DdNull } //Update w =&gt; w.Priority != "High" &amp;&amp; (w.Status != "Complete" || w.Status == null) //Where ); Delete&lt;Task&gt;(w =&gt; w.UserID == userID &amp;&amp; w.Status != "Complete"); </code></pre> <p>This allows me to update/delete values WITHOUT pulling them first. </p> <p>And the code for it looks like this...</p> <pre><code>protected void Update&lt;T&gt;(object values, Expression&lt;Func&lt;T, bool&gt;&gt; where) where T : class { Domain.ExecuteStoreCommand( "UPDATE {0} SET {1} WHERE {2};", GetTableString&lt;T&gt;(), GetUpdateClauseString(values), GetWhereClauseString(where) ); } protected string GetUpdateClauseString(object obj) { string update = ""; var items = obj.ToDictionary(); foreach (var item in items) { //Null if (item.Value is DBNull) update += string.Format("{0} = NULL", GetFieldString(item.Key)); //Increment else if (item.Value is IncrementExpression) update += string.Format("{0} = {0} + {1}", GetFieldString(item.Key), ((IncrementExpression)item.Value).Value.ToString()); //Decrement else if (item.Value is DecrementExpression) update += string.Format("{0} = {0} - {1}", GetFieldString(item.Key), ((DecrementExpression)item.Value).Value.ToString()); //Set value else update += string.Format("{0} = {1}", GetFieldString(item.Key), GetValueString(item.Value)); if (item.Key != items.Last().Key) update += ", "; } return update; } protected string GetWhereClauseString&lt;T&gt;(Expression&lt;Func&lt;T, bool&gt;&gt; where) where T : class { //Get query var query = ((IQueryable&lt;T&gt;)Domain.CreateObjectSet&lt;T&gt;()); query = query.Where(where); ObjectQuery queryObj = (ObjectQuery)query; //Parse where clause string queryStr = queryObj.ToTraceString(); string whereStr = queryStr.Remove(0, queryStr.IndexOf("WHERE") + 5); //Replace params foreach (ObjectParameter param in queryObj.Parameters) { whereStr = whereStr.Replace(":" + param.Name, GetValueString(param.Value)); } //Replace schema name return whereStr.Replace("\"Extent1\"", "\"Primary\""); } </code></pre>
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