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Rename all IVF shadow tables in vec0Rename

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vec0Rename only emitted ALTER TABLE on `<name>_ivf_cells%02d`, so renaming
an IVF-indexed vec0 table left `_ivf_centroids`, `_ivf_rowid_map`, and
`_ivf_vectors` (when quantizer != none) with the old prefix. Subsequent
queries against the renamed table broke, and DROP TABLE left those three
shadows orphaned in the schema. Same shape as the DiskANN/rescore bug fixed
in #294, just for the IVF branch.

Mirror ivf_create_shadow_tables: emit ALTER for all four IVF shadows,
gating `_ivf_vectors` on quantizer != VEC0_IVF_QUANTIZER_NONE.

Adds test-ivf-rename.py (auto-skipped on default builds via conftest's
test-ivf prefix rule) covering quantizer=none, quantizer=binary, and
DROP-after-rename. Also adds a rescore rename regression test to
test-rename.py to lock down the (already-correct) rescore path.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Alex Garcia 2026-05-17 23:09:27 -07:00
parent 8105eee61e
commit 8b81f40d1e
3 changed files with 144 additions and 0 deletions
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13
sqlite-vec.c
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@ -10472,9 +10472,22 @@ static int vec0Rename(sqlite3_vtab *pVtab, const char *zNew) {
#if SQLITE_VEC_EXPERIMENTAL_IVF_ENABLE
for (int i = 0; i < p->numVectorColumns; i++) {
if (p->shadowIvfCellsNames[i]) {
sqlite3_str_appendf(s,
"ALTER TABLE \"%w\".\"%w_ivf_centroids%02d\" RENAME TO \"%w_ivf_centroids%02d\";",
p->schemaName, p->tableName, i, zNew, i);
sqlite3_str_appendf(s,
"ALTER TABLE \"%w\".\"%w_ivf_cells%02d\" RENAME TO \"%w_ivf_cells%02d\";",
p->schemaName, p->tableName, i, zNew, i);
sqlite3_str_appendf(s,
"ALTER TABLE \"%w\".\"%w_ivf_rowid_map%02d\" RENAME TO \"%w_ivf_rowid_map%02d\";",
p->schemaName, p->tableName, i, zNew, i);
// _ivf_vectors is only created when quantizer != none
// (mirror ivf_create_shadow_tables in sqlite-vec-ivf.c).
if (p->vector_columns[i].ivf.quantizer != VEC0_IVF_QUANTIZER_NONE) {
sqlite3_str_appendf(s,
"ALTER TABLE \"%w\".\"%w_ivf_vectors%02d\" RENAME TO \"%w_ivf_vectors%02d\";",
p->schemaName, p->tableName, i, zNew, i);
}
}
}
#endif