ability to use value + value expressions as values in Linq comparisons.

Closes GH-3116

src/LinqTests/Bugs/Bug_3116_more_expression_to_constant_issues.cs

@@ -0,0 +1,27 @@
+using System.Linq;
+using System.Threading.Tasks;
+using Marten;
+using Marten.Testing.Documents;
+using Marten.Testing.Harness;
+
+namespace LinqTests.Bugs;
+
+public class Bug_3116_more_expression_to_constant_issues : BugIntegrationContext
+{
+    [Fact]
+    public async Task query_works()
+    {
+        int from = 0;
+        const int batchSize = 100;
+
+        await theStore.BulkInsertDocumentsAsync(Target.GenerateRandomData(100));
+
+        await theSession.Query<Target>()
+            .Where(
+                e => e.String == "something"
+                     && e.Number >= from
+                     && e.Number < from + batchSize)
+            .OrderBy(r => r.Number)
+            .ToListAsync();
+    }
+}

src/Marten/Linq/Parsing/SimpleExpression.cs

@@ -181,6 +181,8 @@ public ISqlFragment CompareTo(SimpleExpression right, string op)
 
     protected override Expression VisitBinary(BinaryExpression node)
     {
+
+
         switch (node.NodeType)
         {
             case ExpressionType.Modulo:
@@ -206,6 +208,13 @@ protected override Expression VisitBinary(BinaryExpression node)
 
                 return null;
 
+            // GH-3116
+            case ExpressionType.Add:
+                Constant = node.ReduceToConstant();
+                HasConstant = true;
+
+                return null;
+
             default:
                 throw new BadLinqExpressionException(
                     $"Unsupported nested operator '{node.NodeType}' as an operand in a binary expression");