Function cross_join_empty

datafusion/optimizer/src/propagate_empty_relation.rs:541–553

()

    #[test]
    fn cross_join_empty() -> Result<()> {
        let table_scan = test_table_scan()?;
        let left = LogicalPlanBuilder::from(table_scan).build()?;
        let right = LogicalPlanBuilder::empty(false).build()?;

        let plan = LogicalPlanBuilder::from(left)
            .cross_join(right)?
            .filter(col("a").lt_eq(lit(1i64)))?
            .build()?;

        let expected = "EmptyRelation: rows=0";
        assert_together_optimized_plan(plan, expected, true)
    }

    fn assert_empty_left_empty_right_lp(
        left_empty: bool,