diff --git a/docs/content/append-table/global-index.md b/docs/content/append-table/global-index.md
index d88a3348a67a..db7152ee3516 100644
--- a/docs/content/append-table/global-index.md
+++ b/docs/content/append-table/global-index.md
@@ -41,6 +41,8 @@ Global indexes work on top of Data Evolution tables. To use global indexes, your
 - `'row-tracking.enabled' = 'true'`
 - `'data-evolution.enabled' = 'true'`
 
+> Global index queries may not be exact when the index only covers part of the table data. If a query predicate matches the index, Paimon returns only the results from the indexed portion. Matching records in data that has not been indexed yet will not be returned.
+
 ## Prerequisites
 
 Create a table with the required properties: