Update tools/sql_tool.py

tools/sql_tool.py

@@ -31,13 +31,27 @@ class SQLTool:
             self.client = bigquery.Client(credentials=creds, project=cfg.gcp_project)
 
         elif self.backend == "motherduck":
-            import duckdb
+            import duckdb, shutil, glob
+            import os
+
+            if not duckdb.__version__.startswith("1.3.2"):
+                raise RuntimeError(
+                "MotherDuck currently supports DuckDB 1.3.2. "
+                "Pin duckdb==1.3.2 in requirements.txt and redeploy."
+                )
 
             token = self.cfg.motherduck_token or os.getenv("MOTHERDUCK_TOKEN")
             db_name = self.cfg.motherduck_db or "default"
             if not token:
                 raise RuntimeError("Missing MOTHERDUCK_TOKEN")
 
+            try:
+                ext_root = os.path.expanduser("~/.duckdb/extensions")
+                for p in glob.glob(os.path.join(ext_root, "*")):
+                    if "1.3.2" not in p:  # keep current version caches, remove others
+                        shutil.rmtree(p, ignore_errors=True)
+            except Exception:
+
             # Plain DuckDB connection
             self.client = duckdb.connect()