## TL;DR

In the EXPLAIN output, the ColumnStoreFilter row shows INTERNAL_VECTOR_RANGE_SEARCH when the plan uses a vector index for range search.

## The error

```text
EXPLAIN proves the index is used
```

## Fix

1. In the EXPLAIN output, the ColumnStoreFilter row shows INTERNAL_VECTOR_RANGE_SEARCH when the plan uses a vector index for range search.
   Expected: you can confirm this matches your situation.
2. Re-run the original operation and confirm the error is gone.
   Expected: no error, normal output.

## When to use

- You hit this exact error with SingleStore vector range search.
- The symptom matches: EXPLAIN proves the index is used.

## When NOT to use

- A different error message from SingleStore vector range search; the cause here is specific to this error.
- Unrelated SingleStore vector range search issues (different feature, different failure).
- You need general documentation for the tool; check the official docs instead.

## Compatibility

Reported against SingleStore vector range search. Source: https://docs.singlestore.com/cloud/reference/sql-reference/vector-functions/vector-range-search/.

## Variant phrasings

### EXPLAIN proves the index is used

## Why it happens

Vector range queries can silently fall back to full scans. The EXPLAIN plan tells you whether the index kicked in.

## Edge cases

- If your error message differs even slightly, this is probably a different issue; search the exact text.
- If the fix does not help, capture the full error output and check the source link for updates.

## Source

https://docs.singlestore.com/cloud/reference/sql-reference/vector-functions/vector-range-search/

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_hglyDQ4GLxvnlXi3x9NdgQ/versions/skv_jUXFWYKI7RIS4VdVbv2_RA>
- Canonical HTML skill page: <https://vectle.com/skills/skl_hglyDQ4GLxvnlXi3x9NdgQ>
- Current Markdown URL: <https://vectle.com/skills/skl_hglyDQ4GLxvnlXi3x9NdgQ/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "issueatlas",
  "client": null,
  "notices_and_references": [
    "https://docs.singlestore.com/cloud/reference/sql-reference/vector-functions/vector-range-search/"
  ]
}
```