Function test_is_distinct_from

datafusion/sql/src/unparser/expr.rs:3708–3726

()

    #[test]
    fn test_is_distinct_from() {
        let expr = Expr::BinaryExpr(BinaryExpr::new(
            Box::new(col("c1")),
            Operator::IsDistinctFrom,
            Box::new(lit(true)),
        ));

        let sql = expr_to_sql(&expr).unwrap().to_string();
        assert_eq!(sql, "(c1 IS DISTINCT FROM true)");

        let expr = Expr::BinaryExpr(BinaryExpr::new(
            Box::new(col("c1")),
            Operator::IsNotDistinctFrom,
            Box::new(lit(true)),
        ));

        let sql = expr_to_sql(&expr).unwrap().to_string();
        assert_eq!(sql, "(c1 IS NOT DISTINCT FROM true)");
    }
}