# Ingesting the same handbook more than once (real PostgreSQL + pgvector)

rows are counted with: select count(*) from vector_store
1. first upload                    -> status=ingested chunksWritten=4 chunksReplaced=0 | rows in table=4, texts embedded so far=4
2. same bytes again                -> status=skipped  chunksWritten=0 chunksReplaced=0 | rows in table=4, texts embedded so far=4
3. page 2 edited (20 -> 22 days)   -> status=updated  chunksWritten=4 chunksReplaced=4 | rows in table=4, texts embedded so far=8
rows still saying "20 working days": 0, rows saying "22 working days": 1
4. same text, exported again       -> status=updated  chunksWritten=4 chunksReplaced=4 | rows in table=4, texts embedded so far=12
the two PDFs have identical text and different bytes: true
the file hash is a hash of bytes, so a re-export counts as a change and is re-embedded

--- the naive version: vectorStore.add() on every upload, nothing remembered ---
the same 4 chunks added on two more uploads: rows in table 4 -> 12
rows saying "22 working days" now: 3