zhidongqu-db commented on code in PR #55629:
URL: https://github.com/apache/spark/pull/55629#discussion_r3184634003
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sql/core/src/test/resources/sql-tests/inputs/join-nearest-by.sql:
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@@ -0,0 +1,155 @@
+-- Test cases for NEAREST BY top-K ranking join.
+
+CREATE VIEW users(user_id, score) AS VALUES (1, 10.0), (2, 20.0), (3, 30.0);
+CREATE VIEW products(product, pscore) AS VALUES ('A', 11.0), ('B', 22.0),
('C', 5.0);
+
+-- Basic APPROX NEAREST BY SIMILARITY with k = 1
Review Comment:
+1 we should validate the output schema prune all internally generated
columns.
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