zabetak commented on code in PR #6014:
URL: https://github.com/apache/hive/pull/6014#discussion_r2330574329
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ql/src/test/queries/clientpositive/lateral_view_cbo_ppd_filter_loss.q:
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@@ -0,0 +1,33 @@
+-- SORT_QUERY_RESULTS
+-- HIVE-29084: LATERAL VIEW cartesian product schema construction
+
+-- Verifies PPD doesn't eliminate OR filter comparing base table vs lateral
view columns
+SELECT t.key, t.value, lv.col
+FROM (SELECT '238' AS key, 'val_238' AS value) t
+LATERAL VIEW explode(array('238', '86', '311')) lv AS col
+WHERE t.key = '333' OR lv.col = '86'
Review Comment:
Due to the bug the `t.key = '333' OR lv.col = '86'` predicate is removed
completely. If we don't look at the plan (and just look at the results) how we
can be sure that `t.key = '333'` is still taking effect after the fix if we
don't have such values as part of the data.
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