From 77c97960e229bf60461c631877ebd4f2f0389642 Mon Sep 17 00:00:00 2001
From: Louis Dureuil <louis@meilisearch.com>
Date: Thu, 2 Jan 2025 23:55:31 +0100
Subject: [PATCH] =?UTF-8?q?facet=5Fvalue=20starts=20at=20byte=204=20?=
 =?UTF-8?q?=F0=9F=91=80?=
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---
 crates/milli/src/update/new/merger.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crates/milli/src/update/new/merger.rs b/crates/milli/src/update/new/merger.rs
index 90fadd379..4a920a5f4 100644
--- a/crates/milli/src/update/new/merger.rs
+++ b/crates/milli/src/update/new/merger.rs
@@ -265,7 +265,8 @@ impl FacetFieldIdsDelta {
     fn extract_key_data<'key>(&self, key: &'key [u8]) -> (FacetKind, FieldId, &'key [u8]) {
         let facet_kind = FacetKind::from(key[0]);
         let field_id = FieldId::from_be_bytes([key[1], key[2]]);
-        let facet_value = &key[2..];
+        // level is also stored in the key at [3] (always 0)
+        let facet_value = &key[4..];
         (facet_kind, field_id, facet_value)
     }