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Update postgres_impl.py

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There is aBUG. When lighttrag uses the postgres@15 version, there will be an error.The BUG detail as follow:
PostgreSQL database, error:subquery in FROM must have an alias
HINT:  For example, FROM (SELECT ...) [AS] foo.
It roughly means that there is an error in SQL template, and you need to use the alias alias to declare the content of the subquery.
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pengjunfeng11 2025-03-17 10:47:17 +08:00 • committed by GitHub
parent a9bd318d98
commit 4e58c7d7da
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1 changed files with 2 additions and 2 deletions
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lightrag/kg/postgres_impl.py
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@ -1739,7 +1739,7 @@ SQL_TEMPLATES = {
FROM LIGHTRAG_VDB_ENTITY
where workspace=$1
AND chunk_id IN (SELECT chunk_id FROM relevant_chunks)
)
) as chunk_distances
WHERE distance>$2
ORDER BY distance DESC
LIMIT $3
@ -1756,7 +1756,7 @@ SQL_TEMPLATES = {
FROM LIGHTRAG_DOC_CHUNKS
where workspace=$1
AND id IN (SELECT chunk_id FROM relevant_chunks)
)
) as chunk_distances
WHERE distance>$2
ORDER BY distance DESC
LIMIT $3