ZheHu created CALCITE-4886:
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Summary: When converting SQL to RelNode, SqlOrderBy is missing in
sub-query that contains SqlSetOperator
Key: CALCITE-4886
URL: https://issues.apache.org/jira/browse/CALCITE-4886
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.28.0
Reporter: ZheHu
When I run the following test in SqlToRelConverterTest.java:
{code:java}
@Test void testIntersectWithNulls() {
final String sql = ""
+ "select deptno from\n"
+ "(select deptno from dept\n"
+ "union all\n"
+ "select deptno from emp order by deptno) as alia";
final RelNode rel = tester.convertSqlToRel(sql).rel;
System.out.println(RelOptUtil.toString(rel));
}
{code}
The RelNode is:
{code:java}
LogicalProject(DEPTNO=[$0])
LogicalUnion(all=[true])
LogicalProject(DEPTNO=[$0])
LogicalTableScan(table=[[CATALOG, SALES, DEPT]])
LogicalProject(DEPTNO=[$7])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
{code}
I also tried INTERSECT and EXCEPT, which they all lost ORDER BY operator.
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