RE: Useful Oracle books - C.J. Date theory vs. practicality

Thanks Lex, I lost track of the fact when looking at the exampl that the 
discussion was about nulls.

And hence the value of real working examples rather than abstract 
templates.  :)

oracle-l-bounce@xxxxxxxxxxxxx wrote on 05/28/2004 12:56:08 PM:

> Jared, I stored your example in a script, making it prompt for a 
condition:
> 
> SQL*Plus: Release 10.1.0.2.0 - Production on Fri May 28 21:51:24 2004
> Copyright (c) 1982, 2004, Oracle.  All rights reserved.
> 
> SQL> @jared
> Enter value for condition: 'Mort subite' = NULL
> ELSE branch
> ELSE branch
> 
> PL/SQL procedure successfully completed.
> 
> SQL> @jared
> Enter value for condition: 1=1
> THEN branch
> ELSE branch
> 
> PL/SQL procedure successfully completed.
> 
> SQL> list
>   1  begin
>   2    if     (&&condition) then
>   3           dbms_output.put_line('THEN branch');
>   4    else
>   5           dbms_output.put_line('ELSE branch');
>   6    end    if;
>   7    if not (&condition) then
>   8           dbms_output.put_line('THEN branch');
>   9    else
>  10           dbms_output.put_line('ELSE branch');
>  11    end if;
>  12* end;
> SQL>

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