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Enhance PostgreSQL vector storage with chunk_id support

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- Updated SQL templates for entity and relationship upsert to include chunk_id
- Modified PGVectorStorage methods to add chunk_id when inserting or updating records
- Expanded database schema to track chunk-level metadata
This commit is contained in:
Roy
2025-03-07 20:18:01 +00:00
parent 0ec61d6407
commit bbe139cfeb
2 changed files with 14 additions and 11 deletions
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11
lightrag/kg/postgres_impl.py
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@@ -438,6 +438,7 @@ class PGVectorStorage(BaseVectorStorage):
"entity_name": item["entity_name"],
"content": item["content"],
"content_vector": json.dumps(item["__vector__"].tolist()),
"chunk_id": item["source_id"],
}
return upsert_sql, data
@@ -450,6 +451,7 @@ class PGVectorStorage(BaseVectorStorage):
"target_id": item["tgt_id"],
"content": item["content"],
"content_vector": json.dumps(item["__vector__"].tolist()),
"chunk_id": item["source_id"]
}
return upsert_sql, data
@@ -1486,8 +1488,9 @@ SQL_TEMPLATES = {
content_vector=EXCLUDED.content_vector,
update_time = CURRENT_TIMESTAMP
""",
"upsert_entity": """INSERT INTO LIGHTRAG_VDB_ENTITY (workspace, id, entity_name, content, content_vector)
VALUES ($1, $2, $3, $4, $5)
"upsert_entity": """INSERT INTO LIGHTRAG_VDB_ENTITY (workspace, id, entity_name, content,
content_vector, chunk_id)
VALUES ($1, $2, $3, $4, $5, $6)
ON CONFLICT (workspace,id) DO UPDATE
SET entity_name=EXCLUDED.entity_name,
content=EXCLUDED.content,
@@ -1495,8 +1498,8 @@ SQL_TEMPLATES = {
update_time=CURRENT_TIMESTAMP
""",
"upsert_relationship": """INSERT INTO LIGHTRAG_VDB_RELATION (workspace, id, source_id,
target_id, content, content_vector)
VALUES ($1, $2, $3, $4, $5, $6)
target_id, content, content_vector, chunk_id)
VALUES ($1, $2, $3, $4, $5, $6, $7)
ON CONFLICT (workspace,id) DO UPDATE
SET source_id=EXCLUDED.source_id,
target_id=EXCLUDED.target_id,