fn sql_options(&self) -> Vec<SqlOption> {
        vec![
            SqlOption::UsesNumberedParam,  // uses numbered parameters
            SqlOption::SupportsCTE,
        ]
    }
/// return this list of options, supported features in the database
return this list of options, supported features in the database
return this list of options supported features in the database
fn sql_options(&self) -> Vec<SqlOption> {
        vec![
            SqlOption::UsesNumberedParam,  // uses numbered parameters
            SqlOption::SupportsCTE,
        ]
    }
fn sql_options ( & self ) -> Vec < SqlOption > { vec ! [ SqlOption UsesNumberedParam // uses numbered parameters SqlOption SupportsCTE ] }
return this list of options, supported features in the database
return this list of options supported features in the database
&self
&self