I doubt you will see a great performance increase. Built in functions are very optimized. On the other hand, any function that you use on ... ... <看更多>

SQL Server has the ISNULL() function, which is the equivalent of Oracle's NVL() function. For SQL Server folks, it might be nice to have ... ... <看更多>

PL/SQL & SQL Coding Guidelines Version 4.0 ... ... <看更多>