Create Column Heading and Mathematical Expressions?

Question

Is their a way to create your own column heading to use later in a Smart Playlist? Also, can mathematical (+,-,*,/...) be used in it's creation?
I'm trying to create a column heading (variable) that would display (for each song) the ratio of Play Count / Skip Count. If that ratio is >1, then it's something I tend to listen more than skip. The reverse is true if it's <1. I can use this in a Smart Playlist to filter songs going to my iPod (by checking that playlist to be downloaded to my iPod) to those that I listen to most.
Any help would be appreciated.
Message was edited by: luke1012

Answer 1

As I said earlier, you have to use double-quotes when you create object :
SQL> create table emp( "Name" varchar2(20),"Age" number(2));
Table created.
SQL> desc emp
Name                                      Null?    Type
Name                                               VARCHAR2(20 CHAR)
Age                                                NUMBER(2)Once more, why wanted such thing ?
See here below the inconvenient :
SQL> select name, age from emp;
select name, age from emp
ERROR at line 1:
ORA-00904: "AGE": invalid identifier
SQL> select "Name","Age" from emp;
no rows selectedBetter to avoid it.
Nicolas.