From c3fe6d9267978fc67bc8b0f20afbc09a4d050173 Mon Sep 17 00:00:00 2001
From: Mark Carrington <MarkMpn@users.noreply.github.com>
Date: Tue, 5 Sep 2023 19:13:21 +0100
Subject: [PATCH] Avoid errors getting unknown tables when we already know the
 query is not TDS-compatible

---
 .../Visitors/TDSEndpointCompatibilityVisitor.cs                | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MarkMpn.Sql4Cds.Engine/Visitors/TDSEndpointCompatibilityVisitor.cs b/MarkMpn.Sql4Cds.Engine/Visitors/TDSEndpointCompatibilityVisitor.cs
index 051267b4..3f50260c 100644
--- a/MarkMpn.Sql4Cds.Engine/Visitors/TDSEndpointCompatibilityVisitor.cs
+++ b/MarkMpn.Sql4Cds.Engine/Visitors/TDSEndpointCompatibilityVisitor.cs
@@ -147,6 +147,9 @@ public override void Visit(ColumnReferenceExpression node)
 
         private EntityMetadata TryGetEntity(string logicalname)
         {
+            if (!IsCompatible)
+                return null;
+
             if (_tableNames.TryGetValue(logicalname, out var tableName))
                 logicalname = tableName;