cloud-fan commented on a change in pull request #32724:
URL: https://github.com/apache/spark/pull/32724#discussion_r643615648
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/adaptive/AdaptiveQueryExecSuite.scala
##########
@@ -1373,6 +1386,28 @@ class AdaptiveQueryExecSuite
}
}
+ test("SPARK-35585: Support propagate empty relation through project/filter")
{
+ withSQLConf(SQLConf.ADAPTIVE_EXECUTION_ENABLED.key -> "true",
+ SQLConf.AUTO_BROADCASTJOIN_THRESHOLD.key -> "-1") {
+ val (plan1, adaptivePlan1) = runAdaptiveAndVerifyResult(
+ "SELECT key FROM testData WHERE key = 0 ORDER BY key, value")
+ assert(findTopLevelSort(plan1).size == 1)
+ assert(findTopLevelSort(adaptivePlan1).isEmpty)
+
+ val (plan2, adaptivePlan2) = runAdaptiveAndVerifyResult(
+ """
+ |SELECT t1.key, count(*) FROM testData t1
Review comment:
ok, we can use rand() then
```
SELECT key FROM (SELECT * FROM testData WHERE value = 'no_match' ORDER BY
key) WHERE key > rand()
```
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