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fix: add deterministic ordering to chat_ids pagination query to prevent duplicates (#22383)

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Classic298 2026-03-08 02:19:44 +01:00 • committed by GitHub
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6
backend/open_webui/models/chat_messages.py
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@ -292,9 +292,13 @@ class ChatMessageTable:
query = query.filter(ChatMessage.created_at <= end_date)
# Group by chat_id and order by most recent message in each chat
# Secondary sort on chat_id ensures deterministic pagination
# (prevents duplicates across pages when timestamps tie)
chat_ids = (
query.group_by(ChatMessage.chat_id)
.order_by(func.max(ChatMessage.created_at).desc())
.order_by(
func.max(ChatMessage.created_at).desc(), ChatMessage.chat_id
)
.offset(skip)
.limit(limit)
.all()