From 76a44757f3c35045841cf2c3831524f4b501c025 Mon Sep 17 00:00:00 2001
From: Nick Crews <nicholas.b.crews@gmail.com>
Date: Thu, 20 Nov 2025 12:55:42 -0700
Subject: [PATCH] test: error when sqlglot tells us a compilation is
 unsupported

---
 ibis/backends/sql/__init__.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/ibis/backends/sql/__init__.py b/ibis/backends/sql/__init__.py
index c3a03823cb7e..9be0f9e1bd37 100644
--- a/ibis/backends/sql/__init__.py
+++ b/ibis/backends/sql/__init__.py
@@ -118,7 +118,17 @@ def compile(
             Compiled expression
         """
         query = self.compiler.to_sqlglot(expr, limit=limit, params=params)
-        sql = query.sql(dialect=self.dialect, pretty=pretty, copy=False)
+        try:
+            sql = query.sql(
+                dialect=self.dialect,
+                pretty=pretty,
+                copy=False,
+                unsupported_level=sg.ErrorLevel.RAISE,
+            )
+        except sg.UnsupportedError as e:
+            raise exc.UnsupportedOperationError(
+                f"Operation not supported in {self.name} backend: {e}"
+            ) from e
         self._log(sql)
         return sql