diff --git a/src/main/resources/mercury.hql b/src/main/resources/mercury.hql
index dab2046..51137e9 100644
--- a/src/main/resources/mercury.hql
+++ b/src/main/resources/mercury.hql
@@ -1,6 +1,7 @@
 --collect
 CREATE FUNCTION array_intersection AS 'mercury.udf.collect.ArrayIntersection';
 CREATE FUNCTION array_union AS 'mercury.udf.collect.ArrayUnion';
+CREATE FUNCTION array_sort AS 'mercury.udf.collect.ArraySort';
 
 --statistics
 CREATE FUNCTION jaccard_similarity AS 'mercury.udf.statistics.JaccardSimilarity';