findepi commented on code in PR #11256:
URL: https://github.com/apache/datafusion/pull/11256#discussion_r1666030287
##########
datafusion/optimizer/tests/optimizer_integration.rs:
##########
@@ -294,6 +294,21 @@ fn eliminate_nested_filters() {
assert_eq!(expected, format!("{plan:?}"));
}
+#[test]
+fn eliminate_redundant_null_check() {
+ let sql = "\
+ SELECT col_int32, count(*) c
+ FROM test
+ GROUP BY col_int32
+ HAVING c IS NOT NULL";
+ let plan = test_sql(sql).unwrap();
+ let expected = "\
+ Projection: test.col_int32, count(*) AS c\
+ \n Aggregate: groupBy=[[test.col_int32]], aggr=[[count(Int64(1)) AS
count(*)]]\
+ \n TableScan: test projection=[col_int32]";
+ assert_eq!(expected, format!("{plan:?}"));
Review Comment:
filed as https://github.com/apache/datafusion/issues/11270
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