dongjoon-hyun commented on a change in pull request #26656: [SPARK-27986][SQL]
Support ANSI SQL filter clause for aggregate expression
URL: https://github.com/apache/spark/pull/26656#discussion_r356408802
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisErrorSuite.scala
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@@ -169,11 +169,27 @@ class AnalysisErrorSuite extends AnalysisTest {
CatalystSqlParser.parsePlan("SELECT hex(DISTINCT a) FROM TaBlE"),
"DISTINCT specified, but hex is not an aggregate function" :: Nil)
+ errorTest(
+ "non aggregate function with filter predicate",
+ CatalystSqlParser.parsePlan("SELECT hex(a) filter (where c = 1) FROM
TaBlE2"),
Review comment:
`filter` -> `FILTER` and `where` -> `WHERE` will be better.
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