Small improvement to lambda expression parsing (facebookincubator#2660)

Summary: Pull Request resolved: facebookincubator#2660 Reviewed By: xiaoxmeng Differential Revision: D39863640 Pulled By: mbasmanova fbshipit-source-id: dbb973378bd0f09dd1f67535bac3224dc2c09736
Yuhta · Sep 28, 2022 · 0d0eb30 · 0d0eb30
1 parent 720990d
commit 0d0eb30
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/velox/duckdb/conversion/DuckParser.cpp b/velox/duckdb/conversion/DuckParser.cpp
@@ -434,6 +434,10 @@ std::shared_ptr<const core::IExpr> parseLambdaExpr(
       VELOX_CHECK_NOT_NULL(fieldExpr);
       names.push_back(fieldExpr->getFieldName());
     }
+  } else {
+    VELOX_FAIL(
+        "Unexpected left-hand-side expression for the lambda expression: {}",
+        capture->toString())
   }
 
   return std::make_shared<const core::LambdaExpr>(