From 934c10b1cd330d91832c88883782914129aba063 Mon Sep 17 00:00:00 2001 From: Edgar Melendrez Date: Mon, 22 Jul 2024 17:32:23 -0700 Subject: [PATCH] docs: Adding admonition box to warn about MVD (#16712) Co-authored-by: Victoria Lim Co-authored-by: Benedict Jin --- docs/querying/lookups.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/docs/querying/lookups.md b/docs/querying/lookups.md index a22fbf03928..05176f229b1 100644 --- a/docs/querying/lookups.md +++ b/docs/querying/lookups.md @@ -50,6 +50,10 @@ Other lookup types are available as extensions, including: - Globally cached lookups from local files, remote URIs, or JDBC through [lookups-cached-global](./lookups-cached-global.md). - Globally cached lookups from a Kafka topic through [kafka-extraction-namespace](./kafka-extraction-namespace.md). +:::info +[Multi-value dimensions](multi-value-dimensions.md) (MVDs) are not supported as keys in lookups. For example, to map the MVD `["A", "B", "C"]` to the value `x` in your lookup, flatten the MVD and map each element of the MVD to the value. Your lookup will have separate key-value pairs for each element of the MVD: `"A": "x"`, `"B": "x"`, and `"C": "x"`. +::: + Query Syntax ------------