Yunhong Zheng created FLINK-31273: ------------------------------------- Summary: Left join with IS_NULL filter be wrongly pushed down and get wrong join results Key: FLINK-31273 URL: https://issues.apache.org/jira/browse/FLINK-31273 Project: Flink Issue Type: Bug Components: Table SQL / Planner Affects Versions: 1.16.1, 1.17.0 Reporter: Yunhong Zheng Fix For: 1.17.1
Left join with IS_NULL filter be wrongly pushed down and get wrong join results. The sql is: {code:java} SELECT * FROM MyTable1 LEFT JOIN MyTable2 ON a1 = a2 WHERE a2 IS NULL AND a1 < 10 The wrongly plan is: LogicalProject(a1=[$0], b1=[$1], c1=[$2], b2=[$3], c2=[$4], a2=[$5]) +- LogicalFilter(condition=[IS NULL($5)]) +- LogicalJoin(condition=[=($0, $5)], joinType=[left]) :- LogicalValues(tuples=[[]]) +- LogicalTableScan(table=[[default_catalog, default_database, MyTable2]]) {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)