Function test_fmt_sql

datafusion/physical-expr/src/expressions/is_null.rs:214–225

()

    #[test]
    fn test_fmt_sql() -> Result<()> {
        let schema = Schema::new(vec![Field::new("a", DataType::Utf8, true)]);

        // expression: "a is null"
        let expr = is_null(col("a", &schema)?).unwrap();
        let display_string = expr.to_string();
        assert_eq!(display_string, "a@0 IS NULL");
        let sql_string = fmt_sql(expr.as_ref()).to_string();
        assert_eq!(sql_string, "a IS NULL");

        Ok(())
    }
}