rusackas commented on code in PR #37120:
URL: https://github.com/apache/superset/pull/37120#discussion_r3653910602


##########
superset/commands/query/export.py:
##########
@@ -67,8 +67,12 @@ def _file_content(model: SavedQuery) -> str:
 
     @staticmethod
     def _export(
-        model: SavedQuery, export_related: bool = True
+        model: SavedQuery, export_related: bool = True, seen: set[str] | None 
= None
     ) -> Iterator[tuple[str, Callable[[], str]]]:
+        # Initialize seen set if not provided
+        if seen is None:
+            seen = set()
+
         yield (
             ExportSavedQueriesCommand._file_name(model),

Review Comment:
   Same as the other "seen not updated" comments on this PR, `run()`'s wrapping 
loop already adds every yielded filename to `seen` after the fact, so nothing's 
actually missing here.
   



##########
superset/commands/query/export.py:
##########
@@ -79,21 +83,23 @@ def _export(
             database_slug = secure_filename(model.database.database_name)
             file_name = f"databases/{database_slug}.yaml"
 
-            payload = model.database.export_to_dict(
-                recursive=False,
-                include_parent_ref=False,
-                include_defaults=True,
-                export_uuids=True,
-            )
-            # TODO (betodealmeida): move this logic to export_to_dict once this
-            # becomes the default export endpoint
-            if "extra" in payload:
-                try:
-                    payload["extra"] = json.loads(payload["extra"])
-                except json.JSONDecodeError:
-                    logger.info("Unable to decode `extra` field: %s", 
payload["extra"])
+            # Only yield if not already seen (similar to dataset export)
+            if file_name not in seen:
+                payload = model.database.export_to_dict(
+                    recursive=False,
+                    include_parent_ref=False,
+                    include_defaults=True,
+                    export_uuids=True,
+                )
+                # TODO (betodealmeida): move this logic to export_to_dict once 
this
+                # becomes the default export endpoint
+                if "extra" in payload:
+                    try:
+                        payload["extra"] = json.loads(payload["extra"])
+                    except json.JSONDecodeError:

Review Comment:
   Good catch, fixed! `extra` can be `None` for databases that never got that 
column populated, and `json.loads(None)` raises `TypeError`, not 
`JSONDecodeError`. Added it to the except tuple, matching the pattern already 
used elsewhere in the export commands.
   



##########
superset/commands/theme/export.py:
##########
@@ -67,8 +67,12 @@ def _file_content(model: Theme) -> str:
 
     @staticmethod
     def _export(
-        model: Theme, export_related: bool = True
+        model: Theme, export_related: bool = True, seen: set[str] | None = None
     ) -> Iterator[tuple[str, Callable[[], str]]]:
+        # Initialize seen set if not provided (for consistency)
+        if seen is None:
+            seen = set()
+
         yield (
             ExportThemesCommand._file_name(model),
             lambda: ExportThemesCommand._file_content(model),

Review Comment:
   This only yields once, not in a loop, so there's nothing late-binding could 
actually get wrong here.
   



##########
superset/commands/dashboard/export.py:
##########
@@ -189,7 +193,8 @@ def _export(
             dashboard_ids = model.id
             command = ExportChartsCommand(chart_ids)
             command.disable_tag_export()
-            yield from command.run()
+            # Pass the shared seen set to the chart export command
+            yield from command.run(seen=seen)
             command.enable_tag_export()
             if feature_flag_manager.is_feature_enabled("TAGGING_SYSTEM"):
                 yield from ExportTagsCommand.export(

Review Comment:
   Whatever `_export()` yields, including this `yield from`, still passes 
through `run()`'s wrapping loop, which dedupes on filename. This is covered.
   



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