public static Expression nowStr(String format) {
        if (format == null || format.isEmpty()) {
            return x("NOW_STR()");
        }
        return x("NOW_STR(\"" + format + "\")");
    }
public static Expression nowStr ( String format ) { if ( format == null || format . isEmpty ( ) ) { return x ( "NOW_STR()" ) ; } return x ( "NOW_STR(\"" + format + "\")" ) ; }
Returned expression results in statement time stamp as a string in a supported format;
does not vary during a query.