fixes

Author: rustyconover

src/query_farm_server_base/duckdb_serialized_expression.py

@@ -8,8 +8,12 @@
 
 
 def interpret_timestamp_with_time_zone(value: str) -> str:
-    return datetime.fromtimestamp(int(value) / 1_000_000, tz=timezone.utc).strftime(
-        "%Y-%m-%d %H:%M:%S.%f"
+    return (
+        "'"
+        + datetime.fromtimestamp(int(value) / 1_000_000, tz=timezone.utc).strftime(
+            "%Y-%m-%d %H:%M:%S.%f"
+        )
+        + "'"
     )