diff --git a/dhis-2/dhis-support/dhis-support-db-migration/src/main/resources/org/hisp/dhis/db/migration/2.43/V2_43_71__add_datavalue_null_empty_trim_index.sql b/dhis-2/dhis-support/dhis-support-db-migration/src/main/resources/org/hisp/dhis/db/migration/2.43/V2_43_71__add_datavalue_null_empty_trim_index.sql
new file mode 100644
index 000000000000..2e6a028aec98
--- /dev/null
+++ b/dhis-2/dhis-support/dhis-support-db-migration/src/main/resources/org/hisp/dhis/db/migration/2.43/V2_43_71__add_datavalue_null_empty_trim_index.sql
@@ -0,0 +1,7 @@
+-- Partial index to support DataValueTrimJob efficiently.
+-- Only indexes rows where value is null or empty and not yet deleted,
+-- which are the candidates for soft-deletion by the trim job.
+-- Expected to be tiny in a healthy system (near-zero rows match).
+create index if not exists idx_datavalue_null_empty_trim
+    on datavalue (dataelementid)
+    where deleted = false and (value is null or value = '');